BCO-DMO | ERDDAP - bcodmo_dataset_3871

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt
attribute	NC_GLOBAL	acquisition_description	String	Sampling and Analytical Methodology:\\u00a0\n \n1\\. Sampling:\n \nSize-fractionated particles were collected using McLane Research in-situ pumps\n(WTS-LV) that had been modified to accommodate two flowpaths (Lam and Morris\nPatent pending).\\u00a0 Typically, two casts of 8 pumps each and two filter\nholders per pump were deployed to collect a 16-depth profile.\\u00a0 The wire-\nout was used to target nominal depths ('depth_n') during deployment. A self-\nrecording Seabird 19plus CTD was deployed at the end of the line for both\ncruises. On the second cruise, three RBR data loggers were also attached to\npumps #2, #5, and #8 to help correct for actual depths ('depth') during\npumping. For the first cruise (KN199-4), the recorded CTD depth was near its\ntarget depth and had a small standard deviation over the course of pumping, so\nwe report the target depth ('depth_n') as the final depth ('depth').\\u00a0 For\nthe second cruise, the target depth ('depth_n') is not the same as the final\ndepth ('depth'), since some casts experienced significant wire angles\n(especially in the western boundary currents), so we corrected for the wire\nangle based on the recorded depths in the three data loggers and terminal CTD.\n\\u00a0\n \nFilter holders used were 142 mm-diameter 'mini-MULVFS' style filter holders\nwith two stages for two size fractions and multiple baffle systems designed to\nensure even particle distribution and prevent particle loss (Bishop et al.\n2012).\\u00a0 One filter holder/flowpath was loaded with a 51micron Sefar\npolyester mesh prefilter followed by paired Whatman QMA quartz fiber filters.\nThe other filter holder/flowpath was also loaded with a 51micron prefilter,\nbut followed by paired 0.8micron Pall Supor800 polyethersulfone filters.\\u00a0\nThese filter combinations were chosen as the best compromise after extensive\ntesting during the intercalibration process (Bishop et al. 2012).\\u00a0 Each\ncast also had a full set of 'dipped blank' filters deployed.\\u00a0 These were\nthe full filters sets (prefilter followed by paired QMA or paired Supor\nfilters) sandwiched within a 1micron polyester mesh filter, loaded into\nperforated polypropylene containers, and attached with plastic cable ties to a\npump frame, and deployed.\\u00a0 Dipped blank filters were exposed to seawater\nfor the length of the deployment and processed and analyzed as regular\nsamples, and thus functioned as full seawater process blanks. \\u00a0\n \nAll filters and filter holders were acid leached prior to use according to\nmethods recommended in the GEOTRACES sample and sample-handing Protocols\n(Geotraces 2010).\n \nIn this dataset, data reported from the 51micron prefilter are referred to\nwith a 'sink' suffix to indicate the sinking size fraction (>51micron); data\nreported from the main filters (QMA - 1-51micron - or Supor - 0.8 micron-\n51micron) are from the top filter of the pair only, and are referred to with a\n'susp' suffix to indicate the suspended size fraction.\n \n2\\. Analytical Methodology:\n \n2.1. Opal (amorphous silica) \n A 1/16 subsample of the top 0.8micron Supor filter, equivalent to ~30L, or\nof the 51micron polyester prefilter above the QMA filter, equivalent to ~60L,\nwas analyzed for amorphous/biogenic Si concentrations using standard\nspectrophotometric detection of the blue silico-molydate complex. We slightly\nmodified DeMaster\\u2019s time-series approach developed for marine sediments\nto correct for the contribution of lithogenic silica to the leachate (Demaster\n1981), using 20mL 0.2N NaOH at 85\\u00b0C for the leach, and taking a 1.6mL\nsubsample every hour for 3 hours.\\u00a0 The slope of the fit was negligible\nfor shallow samples but generally increased with depth of the sample, a\nreflection of the increasing importance of lithogenic silica to total silica\nwith depth; we thus proceeded with a 1 hour incubation time for shallow cast\nsamples (<900m), and continued the time-series approach for deep cast samples\n(>900m).\\u00a0 Dipped blank filters from both shallow and deep casts were used\nto correct the Supor data.\\u00a0 For >51 micron samples on polyester\nprefilters, blank corrections were made using the average failed pump values\n(pumps that never turned on, or that shut off after <5% of programmed water\nvolume was filtered) because of anomalously high prefilter dipped blank\nvalues.\n \nThe detection limit was three times the standard deviation of dipped blank\nsamples and was 0.26 and 0.19 micronol Si/filter for shallow and deep Supor\ndipped blank subsamples, respectively, and was 1.05 and 0.35 micronol\nSi/filter for shallow and deep polyester prefilter failed pump subsamples,\nrespectively.\\u00a0 Values below the detection limit are flagged (QF=4).\n \nThe mass of biogenic silica (opal) was calculated assuming a hydrated form of\nsilica: SiO2.(0.4 H2O) (Mortlock and Froelich 1989), or 67.2 g opal/mol bSi.\n \nWe use the standard deviation of the dipped blank filters used in the blank\nsubtraction to estimate error in the reported opal value.\\u00a0 The\nappropriate filter-matched standard deviations were converted to \\u00b5g\nopal/L using volume filtered and reported in the opal_susp_sd, opal_sink_sd\ncolumns, as appropriate.\n \n2.2 Total Particulate Carbon (TPC) \n Total particulate carbon was measured using a Flash EA1112 Carbon/Nitrogen\nAnalyzer using a Dynamic Flash Combustion technique at the WHOI Nutrient\nAnalytical Facility. Suspended particles (1-51micron) were measured for total\nparticulate carbon using one or two 12mm-diameter punches from the top QMA\nfilter, representing the equivalent of 10-20L of material. For the >51micron\nsize fraction, particles from half or a whole 51micron polyester prefilter\nwere rinsed at sea with 1micron-filtered seawater onto a 25mm 0.8micron\nSterlitech Ag filter or 25mm pre-combusted Whatman QMA filter before being\ndried at 60\\u00b0C.\\u00a0 A quarter of the Ag or QMA filter containing rinsed\nparticles was analyzed for total particulate carbon, typically representing\n60-120L of material. \n We use the standard deviation of the dipped blank filters used in the blank\nsubtraction to estimate error in the TPC measurement.\\u00a0 For TPC in the\nsuspended (0.8-51 micron) size fraction (TPC_susp), the standard deviation of\n8 dipped blank or failed pump QMA filters (6.95 micronol C/filter for\nQMA).\\u00a0 For TPC in the sinking (>51 micron) size fraction, the standard\ndeviation of 8 dipped blank filters rinsed onto Ag and onto QMA were 0.52\nmicronol C/filter and 0.59 micronol C/filter, respectively.\\u00a0 The\nappropriate filter-matched standard deviations were converted to \\u00b5g C/L\nusing volume filtered and reported in the TPC_susp_sd, TPC_sink_sd columns, as\nappropriate.\n \n 2.3 Particulate Inorganic Carbon (PIC) and CaCO3 \n PIC was measured using one of four methods noted in data column\n'PIC_method': \n 1.\\u00a0\\u00a0 \\u00a0Directly by coulometry (measurement of CO2 following\nclosed-system conversion of PIC to CO2 upon addition of 1N phosphoric acid to\na QMA punch or 1/16 polyester prefilter) (Honjo et al. 1995) \n As CaCO3 from the measurement of salt-corrected Ca (using Na for salt\ncorrection) (Lam and Bishop 2007) on a 1/16 subsample of Supor or polyester\nprefilter or 2 QMA punches (2% of filter area) and measured by: \n 2.\\u00a0\\u00a0 \\u00a0ICP-MS at WHOI following a 2 hr room temperature 25%\nglacial acetic acid leach, which was dried down and brought back up in 5% HNO3 \n 3.\\u00a0\\u00a0 \\u00a0ICP-MS at WHOI following a 5% (0.6N) HCl leach for\n12-16 hrs at 60\\u00b0C and diluted to 1% HCl \n 4.\\u00a0\\u00a0 \\u00a0ICP-AES at Boston University following a 5% HCl leach\novernight at room temperature \n Intercomparability between methods was tested by running select samples in\nreplicate by different methods.\\u00a0 PIC_methods 1,2,3 had good\nintercomparability.\\u00a0 There was a 20-30% offset in samples analyzed by\nPIC_method=4 compared to the other methods.\\u00a0 Data from PIC_method=4 were\nnormalized using replicate analyses from a depth profile (GT11-8 for Supor\nsamples; GT11-24 for prefilter samples).\\u00a0 The resulting dataset has\nimproved oceanographic consistency.\\u00a0 When available, the reported error\nis the standard deviation of replicate analyses (after normalization); if no\nreplicate analyses were made, the reported error is the standard deviation of\nthe dipped blank filters used in the blank subtraction for each method and\nfiltertype, adjusted for volume filtered. The standard deviation of the blank\nsubtraction was 18.3 \\u00b5g PIC/QMA filter for coulometry and 3.0 \\u00b5g\nPIC/prefilter or 11.0 \\u00b5g PIC/Supor filter for ICP-MS. For ICP-AES, the\nstandard deviation of the blank subtraction was 190 \\u00b5g PIC/QMA filter, 61\nor 12 \\u00b5g PIC/Supor filter (depending on the run), and 7.1 \\u00b5g\nPIC/prefilter.\n \nThe mass of CaCO3 is calculated stoichiometrically from the mass of PIC (CaCO3\n[\\u00b5g/L] = 100.08 g CaCO3/12 g C * PIC [\\u00b5g/L])\n \n2.4 Particulate Organic Carbon (POC) \n POC is calculated as the difference between TPC (see 2.2) and PIC (see 2.3).\nAny negative numbers were set to 0.\\u00a0 Errors were propagated from those\nfrom TPC and PIC.\n \n2.5 Particulate Organic Matter (POM) \n POM is calculated from POC (see 2.4) using a weight ratio of 1.88 g POM/g\nPOC (Lam et al. 2011).\n \n2.6 Particulate trace metals (pTM) \n Methods for particulate trace metal (pTM) digestion and analysis are\ndescribed in (Ohnemus et al. submitted) and briefly below.\\u00a0 Total pTM\nconcentrations in the suspended fraction (_susp) were analyzed from 1/16\nsubsamples of the top Supor (0.8micron) filter.\\u00a0 pTM totals in the\nsinking size fraction (_sink) were analyzed from 1/8 subsamples (typically\n~150L) of the QMA-side 51micron pre-filter. Pre-filter particles were rinsed\nat sea onto 25mm Supor (0.8micron) filter discs using 0.2micron-filtered\nsurface seawater collected using clean techniques from an underway Fish system\n(Bruland et al. 2005).\\u00a0 In Teflon vials (Savillex), samples were first\ndigested using a 3:1 mixture of sulfuric acid and hydrogen peroxide at high\nheat to remove the Supor filter matrix, then dried. A mixture of HCl/HNO3/HF\nacids (all acids 4N, heated to 135\\u00b0C for 4 hrs) was used to digest the\nmaterial in the remaining pellet, which was then dried, reacted with a small\namount of 50% HNO3/15% H2O2 to remove any remaining organics, dried, and\nresuspended in 5% HNO3\\u00ac for analysis via ICP-MS (Element 2, Thermo-\nFinnigan).\\u00a0 Elemental concentrations were standardized using multi-\nelement, external standard curves prepared from NIST atomic absorption-\nstandards in 5% HNO3\\u00ac.\\u00a0 Standard curves were fitted using weighted\nleast squares fits that consider instrument analytical uncertainties.\\u00a0\nData are reported in units of [nmoles per L of seawater filtered] and have had\nthe median of multiple (typically 12-16) dipped blank filters (analyzed using\nidentical methods) subtracted.\\u00a0 The detection limit of most elements was\ndefined as 3 times the standard deviation of 12-16 dipped blank\nfilters.\\u00a0\\u00a0 We define the detection limit for Ti to be one standard\ndeviation of the dipped blanks filters.\\u00a0 The median and standard\ndeviation of the dipped blank filters and detection limits for the Supor\n(0.8-51 micron size fraction) and polyester prefilter (>51micron size\nfraction) are reported in the following table in nmol per whole filter (NB:\nfilter area of 142mm filter is 158.4 cm2):\n \nTable 1: Dipped (filter) blanks and detection limits for 0.8-51um samples for\n142mm filters (nmol/filter) ([Table 1 PDF file](\\\\\"http://data.bco-\ndmo.org/GEOTRACES/Lam/Lam_particulateComp_table1_v3.pdf\\\\\"))\n \nIn table 1 the errors (_susp_error, _sink_error) are reported as the 1-sigma\nvariation of propagated instrumental analytical and standard curve\nuncertainties, and the variation in subtracted dipped blank filters.\n \nThe completeness of our digestion method for trace elements was assessed by\ndigesting and analyzing three certified reference materials: a freshwater\nplankton CRM from the European Commision Community Bureau of Reference\n(BCR-414), and two marine sediments from the National Research Council of\nCanada (PACS-1 and MESS-3).\\u00a0 Certified values with their standard\ndeviation and recoveries from our lab with standard deviations, are presented\nin the table appended at the end of this document.\n \n2.7 Lithogenic material \n Al is usually used as a tracer of lithogenic material since it is the third\nmost abundant element in Earth\\u2019s crust after Si and O.\\u00a0 Al has the\nadded advantage that its concentration does not vary much between upper\ncontinental crust (UCC Al = 8.04% by weight) and bulk continental crust (BCC\nAl = 8.41wt%), so the estimate of lithogenic mass is not very sensitive to\nlithogenic source regions.\\u00a0 However, our data suggests that there is\nconsiderable scavenged Al in particles near the coasts, which would lead to\noverestimates of lithogenic mass in coastal samples.\\u00a0 We thus calculate\nlithogenic mass two ways: 1) using the UCC Al concentration of 8.04% to\ncalculate lithogenic mass (Litho_AlUCC), and 2) using Ti, a lithogenic tracer\nthat appears to be less affected by scavenging (Litho_TiDust).\\u00a0 Ti has\nthe disadvantage of varying greatly as a function of different source regions\n(e.g., UCC Ti=0.3wt% and BCC Ti=0.54wt%).\\u00a0\\u00a0 We make the assumption\nthat the source of the lithogenic material is from African dust, and use the\nconcentration of Ti and Al in aerosols collected on four samples between Cape\nVerde and Mauritania (Shelley and Landing, personal communication) to estimate\na Ti composition of 0.6 wt% to estimate lithogenic mass (Litho_TiDust).\\u00a0\nWe estimate an uncertainty in the lithogenic mass derived from Ti of 7%, which\nis the propogated uncertainty of the analytical error (1 sigma) of Ti (6%) and\nthe variability in the estimate of the Ti composition of the collected\naerosols (4%).\\u00a0 The Ti-based estimate (Litho_TiDust) is the one that we\nuse in subsequent calculations (eg., suspended particulate mass, section 2.9).\n \n2.8 Fe and Mn oxyhydroxides \n Fe and Mn in oxyhydroxides were calculated by subtracting Fe and Mn\nassociated with lithogenic material.\\u00a0 Unlike Al, crustal Fe, Mn, and Ti\nvary as a function of crustal material, but the ratios of Fe and Mn to Ti are\nless variable. We therefore use Fe/Ti = 8.736 (mole ratio) and Mn/Ti = 0.1268\n(mole ratio) derived from aerosols collected on four samples between Cape\nVerde and Mauritania (Shelley and Landing, personal communication) to subtract\nthe lithogenic contributions of Fe and Mn to derive Fe(OH)3_TiDust and\nMnO2_TiDust.\\u00a0 For comparison, UCC Fe/Ti and Mn/Ti mole ratios are 10.0\nand 0.1745, respectively. Variability in the Fe/Ti and Mn/Ti ratios in the\naerosols and analytical errors for Fe, Mn, and Ti were propagated to determine\nthe error for Fe and Mn oxyhydroxides.\\u00a0 The variability in the Fe/Ti and\nMn/Ti ratios in the aerosols was 2% and 6%, respectively.\\u00a0 Typical\nanalytical errors for Fe, Mn, and Ti are 3%, 3%, and 6%, respectively. We\napproximate the formulae for Fe and Mn oxyhydroxides to be Fe(OH)3\n(ferrihydrite approximation) and MnO2 (birnessite approximation), with formula\nweights 106.9 g Fe(OH)3/mol Fe and 86.9 g MnO2/mol Mn, respectively. Negative\nnumbers were set to 0.\n \n2.9 Suspended particulate mass \\u00a0 \n Suspended particulate mass in the sinking (>51micron) and suspended\n(1-51micron) size fractions was estimated as the chemical dry weight of the\nmajor particulate phases, which is the sum of POM, opal, CaCO3, lithogenic\nmaterial from Ti (Litho_TiDust), and Fe and Mn oxyhydroxides, and is\ncalculated as: \n SPM = 100.08 g CaCO3/12 g C * PIC [\\u00b5g/L] + opal [\\u00b5g/L] + 1.88 g\nPOM/g POC * POC [\\u00b5g/L] + ... \n \\u00a0\\u00a0 \\u00a0Litho_TiDust [\\u00b5g/L] + Fe(OH)3_TiDust [\\u00b5g/L] +\nMnO2_TiDust [\\u00b5g/L] \n Note that the resolution of this data is dictated by the lowest resolution\nof the component parts.
attribute	NC_GLOBAL	awards_0_award_nid	String	55161
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-0963026
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=0963026
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	Donald L. Rice
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	51467
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Size-fractionated major and minor particle composition and concentration from GEOTRACES NAZT cruises \n PI: P. Lam (WHOI) \n version 5.1: 2020-02-26 [changed displayed order of columns] \n [replaces version 5: 2018-08-06 [corrected data - see documentation] \n [replaces version 4: 2014-12-12 [corrected data - see documentation] \n [replaces version 3: 31 October 2013] \n [replaces version 2b: 14 June 2013] \n [replaces version 2: 11 April 2013: added nominal depths] \n [replaces version 1: 1 February 2013]
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2013-02-01T20:11:44Z
attribute	NC_GLOBAL	date_modified	String	2020-02-26T21:29:25Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.3871.5.1
attribute	NC_GLOBAL	Easternmost_Easting	double	350.34
attribute	NC_GLOBAL	geospatial_lat_max	double	39.7
attribute	NC_GLOBAL	geospatial_lat_min	double	17.35
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	350.34
attribute	NC_GLOBAL	geospatial_lon_min	double	290.20001
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	4889.6
attribute	NC_GLOBAL	geospatial_vertical_min	double	748.5
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/3871
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	CTD Sea-Bird
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	A self-recording Seabird 19plus CTD, deployed at the end of the line for both cruises.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	6087
attribute	NC_GLOBAL	instruments_0_description	String	Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/130/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	CTD Sea-Bird
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	447
attribute	NC_GLOBAL	instruments_0_supplied_name	String	CTD Sea-Bird
attribute	NC_GLOBAL	instruments_1_acronym	String	ICP Mass Spec
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	Used to measure particulate inorganic carbon (PIC) and particulate trace metals (pTM). Instruments were located at WHOI and Boston University.
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	743391
attribute	NC_GLOBAL	instruments_1_description	String	An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB15/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Inductively Coupled Plasma Mass Spectrometer
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	530
attribute	NC_GLOBAL	instruments_1_supplied_name	String	Element 2, Thermo-Finnigan
attribute	NC_GLOBAL	instruments_2_acronym	String	McLane Pump
attribute	NC_GLOBAL	instruments_2_dataset_instrument_description	String	Modified to accommodate two flowpaths (Lam and Morris Patent pending). Typically, two casts of 8 pumps each and two filter holders per pump were deployed to collect a 16-depth profile.\nLam, P. J., and P. J. Morris. Patent pending. In situ marine sample collection system and methods. Application No. 13/864,655.
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	6086
attribute	NC_GLOBAL	instruments_2_description	String	McLane pumps sample large volumes of seawater at depth. They are attached to a wire and lowered to different depths in the ocean. As the water is pumped through the filter, particles suspended in the ocean are collected on the filters. The pumps are then retrieved and the contents of the filters are analyzed in a lab.
attribute	NC_GLOBAL	instruments_2_instrument_name	String	McLane Pump
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	627
attribute	NC_GLOBAL	instruments_2_supplied_name	String	McLane Pump
attribute	NC_GLOBAL	instruments_3_acronym	String	CHN
attribute	NC_GLOBAL	instruments_3_dataset_instrument_description	String	Used to measure total particulate carbon.
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	743390
attribute	NC_GLOBAL	instruments_3_description	String	A unit that accurately determines the carbon and nitrogen concentrations of organic compounds typically by detecting and measuring their combustion products (CO2 and NO).
attribute	NC_GLOBAL	instruments_3_instrument_name	String	Particulate Organic Carbon/Nitrogen Analyzer
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	654
attribute	NC_GLOBAL	instruments_3_supplied_name	String	Flash EA1112 Carbon/Nitrogen Analyzer
attribute	NC_GLOBAL	keywords	String	Ag_sink, Ag_sink_err, Ag_sink_err_flag, Ag_sink_flag, Ag_susp, Ag_susp_err, Ag_susp_err_flag, Ag_susp_flag, Al_sink, Al_sink_err, Al_sink_err_flag, Al_sink_flag, Al_susp, Al_susp_err, Al_susp_err_flag, AL_susp_flag, Ba_sink, Ba_sink_err, Ba_sink_err_flag, Ba_sink_flag, Ba_susp, Ba_susp_err, Ba_susp_err_flag, Ba_susp_flag, bco, bco-dmo, biological, bottle, bottle_GEOTRC, btl, BTL_ISO_DateTime_UTC, CaCO3_sink, CaCO3_sink_flag, CaCO3_susp, CaCO3_susp_flag, carbonate, cast, cast_flag, cast_GEOTRC, cast_type, Cd_sink, Cd_sink_err, Cd_sink_err_flag, Cd_sink_flag, Cd_susp, Cd_susp_err, Cd_susp_err_flag, Cd_susp_flag, chemical, co3, Co_sink, Co_sink_err, Co_sink_err_flag, Co_sink_flag, Co_susp, Co_susp_err, Co_susp_err_flag, Co_susp_flag, cruise, cruise_id, Cu_sink, Cu_sink_err, Cu_sink_err_flag, Cu_sink_flag, Cu_susp, Cu_susp_err, Cu_susp_err_flag, Cu_susp_flag, data, dataset, date, depth, depth_flag, depth_GEOTRC_CTD, depth_GEOTRC_CTD_round, depth_n, depth_sd, depth_sd_flag, depth_w, dmo, dust, erddap, error, event, event_GEOTRC, Fe_sink, Fe_sink_err, Fe_sink_err_flag, Fe_sink_flag, Fe_susp, Fe_susp_err, Fe_susp_err_flag, Fe_susp_flag, FeOH_3_sink, FeOH_3_sink_flag, FeOH_3_sink_sd, FeOH_3_sink_sd_flag, FeOH_3_susp, FeOH_3_susp_flag, FeOH_3_susp_sd, FeOH_3_susp_sd_flag, flag, geotrc, iso, latitude, litho, Litho_AlUCC_sink, Litho_AlUCC_sink_flag, Litho_AlUCC_sink_sd, Litho_AlUCC_sink_sd_flag, Litho_AlUCC_susp, Litho_AlUCC_susp_flag, Litho_AlUCC_susp_sd, Litho_AlUCC_susp_sd_flag, Litho_TiDust_sink, Litho_TiDust_sink_flag, Litho_TiDust_sink_sd, Litho_TiDust_sink_sd_flag, Litho_TiDust_susp, Litho_TiDust_susp_flag, Litho_TiDust_susp_sd, Litho_TiDust_susp_sd_flag, longitude, management, Mn_sink, Mn_sink_err, Mn_sink_err_flag, Mn_sink_flag, Mn_susp, Mn_susp_err, Mn_susp_err_flag, Mn_susp_flag, MnO2_sink, MnO2_sink_flag, MnO2_sink_sd, MnO2_sink_sd_flag, MnO2_susp, MnO2_susp_flag, MnO2_susp_sd, MnO2_susp_sd_flag, model, Nd_sink, Nd_sink_err, Nd_sink_err_flag, Nd_sink_flag, Nd_susp, Nd_susp_err, Nd_susp_err_flag, Nd_susp_flag, Ni_sink, Ni_sink_err, Ni_sink_err_flag, Ni_sink_flag, Ni_susp, Ni_susp_err, Ni_susp_err_flag, Ni_susp_flag, O2, ocean, oceanography, office, opal, opal_sink, opal_sink_flag, opal_sink_sd, opal_sink_sd_flag, opal_susp, opal_susp_flag, opal_susp_sd, opal_susp_sd_flag, oxygen, P_sink, P_sink_err, P_sink_err_flag, P_sink_flag, P_susp, P_susp_err, P_susp_err_flag, P_susp_flag, Pb_sink, Pb_sink_err, Pb_sink_err_flag, Pb_sink_flag, Pb_susp, Pb_susp_err, Pb_susp_err_flag, Pb_susp_flag, pic, PIC_sink, PIC_sink_flag, PIC_sink_sd, PIC_sink_sd_flag, PIC_susp, PIC_susp_flag, PIC_susp_sd, PIC_susp_sd_flag, poc, POC_sink, POC_sink_flag, POC_sink_sd, POC_sink_sd_flag, POC_susp, POC_susp_flag, POC_susp_sd, POC_susp_sd_flag, pom, POM_sink, POM_sink_flag, POM_susp, POM_susp_flag, preliminary, princeton, pump, pump_flag, qma, sample, sample_bottle_GEOTRC, sample_GEOTRC, sample_GEOTRC_flag, sink, spm, SPM_sink, SPM_sink_flag, SPM_sink_sd, SPM_sink_sd_flag, SPM_susp, SPM_susp_flag, SPM_susp_sd, SPM_susp_sd_flag, station, station_GEOTRC, supor, susp, Th_sink, Th_sink_err, Th_sink_err_flag, Th_sink_flag, Th_susp, Th_susp_err, Th_susp_err_flag, Th_susp_flag, Ti_sink, Ti_sink_err, Ti_sink_err_flag, Ti_sink_flag, Ti_susp, Ti_susp_err, Ti_susp_err_flag, Ti_susp_flag, time, time2, tpc, TPC_sink, TPC_sink_flag, TPC_sink_sd, TPC_sink_sd_flag, TPC_susp, TPC_susp_flag, TPC_susp_sd, TPC_susp_sd_flag, type, ucc, v, V_sink, V_sink_err, V_sink_err_flag, V_sink_flag, V_susp, V_susp_err, V_susp_err_flag, V_susp_flag, vol, vol_QMA, vol_QMA_flag, vol_Supor, vol_Supor_flag, Y_sink, Y_sink_err, Y_sink_err_flag, Y_sink_flag, Y_susp, Y_susp_err, Y_susp_err_flag, Y_susp_flag, Zn_sink, Zn_sink_err, Zn_sink_err_flag, Zn_sink_flag, Zn_susp, Zn_susp_err, Zn_susp_err_flag, Zn_susp_flag
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/3871/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/3871
attribute	NC_GLOBAL	Northernmost_Northing	double	39.7
attribute	NC_GLOBAL	param_mapping	String	{'3871': {'depth_GEOTRC_CTD': 'flag - depth', 'lat': 'master - latitude', 'lon': 'master - longitude', 'ISO_DateTime_UTC': 'flag - time'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/3871/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_0_person_name	String	Phoebe J. Lam
attribute	NC_GLOBAL	people_0_person_nid	String	51146
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_1_person_name	String	Phoebe J. Lam
attribute	NC_GLOBAL	people_1_person_nid	String	51146
attribute	NC_GLOBAL	people_1_role	String	Contact
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	people_2_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_2_person_name	String	Nancy Copley
attribute	NC_GLOBAL	people_2_person_nid	String	50396
attribute	NC_GLOBAL	people_2_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	project	String	U.S. GEOTRACES NAT
attribute	NC_GLOBAL	projects_0_acronym	String	U.S. GEOTRACES NAT
attribute	NC_GLOBAL	projects_0_description	String	Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.\nThe first U.S. GEOTRACES Atlantic Section will be specifically centered around a sampling cruise to be carried out in the North Atlantic in 2010. Ed Boyle (MIT) and Bill Jenkins (WHOI) organized a three-day planning workshop that was held September 22-24, 2008 at the Woods Hole Oceanographic Institution. The main goal of the workshop, sponsored by the National Science Foundation and the U.S. GEOTRACES Scientific Steering Committee, was to design the implementation plan for the first U.S. GEOTRACES Atlantic Section. The primary cruise design motivation was to improve knowledge of the sources, sinks and internal cycling of Trace Elements and their Isotopes (TEIs) by studying their distributions along a section in the North Atlantic (Figure 1). The North Atlantic has the full suite of processes that affect TEIs, including strong meridional advection, boundary scavenging and source effects, aeolian deposition, and the salty Mediterranean Outflow. The North Atlantic is particularly important as it lies at the \"origin\" of the global Meridional Overturning Circulation.\nIt is well understood that many trace metals play important roles in biogeochemical processes and the carbon cycle, yet very little is known about their large-scale distributions and the regional scale processes that affect them. Recent advances in sampling and analytical techniques, along with advances in our understanding of their roles in enzymatic and catalytic processes in the open ocean provide a natural opportunity to make substantial advances in our understanding of these important elements. Moreover, we are motivated by the prospect of global change and the need to understand the present and future workings of the ocean's biogeochemistry. The GEOTRACES strategy is to measure a broad suite of TEIs to constrain the critical biogeochemical processes that influence their distributions. In addition to these \"exotic\" substances, more traditional properties, including macronutrients (at micromolar and nanomolar levels), CTD, bio-optical parameters, and carbon system characteristics will be measured. The cruise starts at Line W, a repeat hydrographic section southeast of Cape Cod, extends to Bermuda and subsequently through the North Atlantic oligotrophic subtropical gyre, then transects into the African coast in the northern limb of the coastal upwelling region. From there, the cruise goes northward into the Mediterranean outflow. The station locations shown on the map are for the \"fulldepth TEI\" stations, and constitute approximately half of the stations to be ultimately occupied.\nFigure 1. The proposed 2010 Atlantic GEOTRACES cruise track plotted on dissolved oxygen at 400 m depth. Data from the World Ocean Atlas (Levitus et al., 2005) were plotted using Ocean Data View (courtesy Reiner Schlitzer). [click on the image to view a larger version]\nHydrography, CTD and nutrient measurements will be supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They will be providing an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch will be provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system.\nThe North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2).\nKN199-04 Cruise Report (PDF)\nFigure 2. The red line shows the cruise track for the first leg of the US Geotraces North Atlantic Transect on the R/V Knorr in October 2010. The rest of the stations (beginning with 13) will be completed in October-December 2011 on the R/V Knorr (courtesy of Bill Jenkins, Chief Scientist, GNAT first leg). [click on the image to view a larger version]\nThe section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3).\nKN204-01A,B Cruise Report (PDF)\nFigure 3. Station locations occupied on the US Geotraces North Atlantic Transect on the R/V Knorr in November 2011. [click on the image to view a larger version]\nData from the North Atlantic Transect cruises are available under the Datasets heading below, and consensus values for the SAFe and North Atlantic GEOTRACES Reference Seawater Samples are available from the GEOTRACES Program Office: Standards and Reference Materials\nADCP data are available from the Currents ADCP group at the University of Hawaii at the links below:KN199-04 (leg 1 of 2010 cruise; Lisbon to Cape Verde)KN199-05 (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)KN204-01A (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)KN204-01B (part 2 of 2011 cruise; Bermuda to Cape Verde)
attribute	NC_GLOBAL	projects_0_end_date	String	2013-08
attribute	NC_GLOBAL	projects_0_geolocation	String	Subtropical western and eastern North Atlantic Ocean
attribute	NC_GLOBAL	projects_0_name	String	U.S. GEOTRACES North Atlantic Transect
attribute	NC_GLOBAL	projects_0_project_nid	String	2066
attribute	NC_GLOBAL	projects_0_project_website	String	https://www.geotraces.org/
attribute	NC_GLOBAL	projects_0_start_date	String	2010-10
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	17.35
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	cast_flag,pump_flag,vol_QMA_flag,Litho_AlUCC_sink_sd_flag,Litho_AlUCC_susp_sd_flag,Litho_TiDust_sink_flag,FeOH_3_sink_flag,SPM_sink_sd_flag,SPM_susp_flag,SPM_susp_sd_flag,Nd_sink_flag,Ni_sink_flag,Ni_susp_flag,P_sink_flag,P_susp_flag,V_sink_flag,V_susp_flag,Zn_sink_flag,Zn_susp_flag
attribute	NC_GLOBAL	summary	String	Size-fractionated major and minor particle composition and concentration from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project).
attribute	NC_GLOBAL	time_coverage_end	String	2011-12-09T23:53Z
attribute	NC_GLOBAL	time_coverage_start	String	2010-10-17T02:37Z
attribute	NC_GLOBAL	title	String	[GT10-11 - Particulate composition] - Size-fractionated major and minor particle composition and concentration from R/V Knorr KN199-04 & KN204-01 (GA03) in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES North Atlantic Transect)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	290.20001
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	cruise_id		String
attribute	cruise_id	bcodmo_name	String	cruise_id
attribute	cruise_id	description	String	cruise identification
attribute	cruise_id	long_name	String	Cruise Id
attribute	cruise_id	units	String	text
variable	station_GEOTRC		byte
attribute	station_GEOTRC	_FillValue	byte	127
attribute	station_GEOTRC	actual_range	byte	1, 24
attribute	station_GEOTRC	bcodmo_name	String	station
attribute	station_GEOTRC	description	String	GEOTRACES station number; ranges from 1 through 12 for KN199-04 and 1 through 24 for KN204-01. Stations 7 and 9 were skipped on KN204-01. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'station'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
attribute	station_GEOTRC	long_name	String	Station GEOTRC
attribute	station_GEOTRC	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	17.35, 39.7
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	latitude
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	description	String	latitude of the shallow pump cast of the station; north is positive
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	NaN
attribute	longitude	actual_range	double	290.20001, 350.34
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	longitude
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	description	String	longitude of the shallow pump cast of the station; east is positive
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	date		int
attribute	date	_FillValue	int	2147483647
attribute	date	actual_range	int	20101017, 20111209
attribute	date	bcodmo_name	String	date
attribute	date	description	String	date of the midpoint of pumping of the shallow pump cast of the station in the format yyyymmdd
attribute	date	long_name	String	Date
attribute	date	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	date	units	String	unitless
variable	time2		short
attribute	time2	_FillValue	short	32767
attribute	time2	actual_range	short	25, 2353
attribute	time2	bcodmo_name	String	time
attribute	time2	description	String	time of the midpoint of pumping of the shallow pump cast of the station in the format HHMM
attribute	time2	long_name	String	Time
attribute	time2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/
attribute	time2	units	String	unitless
variable	depth_w		short
attribute	depth_w	_FillValue	short	32767
attribute	depth_w	actual_range	short	2150, 5851
attribute	depth_w	bcodmo_name	String	depth_w
attribute	depth_w	colorBarMaximum	double	8000.0
attribute	depth_w	colorBarMinimum	double	-8000.0
attribute	depth_w	colorBarPalette	String	TopographyDepth
attribute	depth_w	description	String	depth of the water
attribute	depth_w	long_name	String	Depth
attribute	depth_w	standard_name	String	depth
attribute	depth_w	units	String	meters
variable	cast_GEOTRC		byte
attribute	cast_GEOTRC	_FillValue	byte	127
attribute	cast_GEOTRC	actual_range	byte	2, 9
attribute	cast_GEOTRC	bcodmo_name	String	cast
attribute	cast_GEOTRC	description	String	cast identifier numbered consecutively within a station. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'cast'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
attribute	cast_GEOTRC	long_name	String	Cast GEOTRC
attribute	cast_GEOTRC	units	String	integer
variable	cast_flag		byte
attribute	cast_flag	_FillValue	byte	127
attribute	cast_flag	actual_range	byte	0, 0
attribute	cast_flag	bcodmo_name	String	flag
attribute	cast_flag	colorBarMaximum	double	150.0
attribute	cast_flag	colorBarMinimum	double	0.0
attribute	cast_flag	description	String	measurement quality flag
attribute	cast_flag	long_name	String	Cast Flag
attribute	cast_flag	units	String	unitless
variable	cast_type		byte
attribute	cast_type	_FillValue	byte	127
attribute	cast_type	actual_range	byte	1, 2
attribute	cast_type	bcodmo_name	String	cast_type
attribute	cast_type	description	String	1 is a shallow cast; 2 is a deep cast
attribute	cast_type	long_name	String	Cast Type
attribute	cast_type	units	String	integer
variable	event_GEOTRC		short
attribute	event_GEOTRC	_FillValue	short	32767
attribute	event_GEOTRC	actual_range	short	2009, 3282
attribute	event_GEOTRC	bcodmo_name	String	event
attribute	event_GEOTRC	description	String	Unique identifying number for US GEOTRACES sampling events; ranges from 2001 to 2225 for KN199-04 events and from 3001 to 3282 for KN204-01 events. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'event'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
attribute	event_GEOTRC	long_name	String	Event GEOTRC
attribute	event_GEOTRC	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/
attribute	event_GEOTRC	units	String	unitless
variable	depth_n		short
attribute	depth_n	_FillValue	short	32767
attribute	depth_n	actual_range	short	26, 5485
attribute	depth_n	bcodmo_name	String	depth_n
attribute	depth_n	colorBarMaximum	double	8000.0
attribute	depth_n	colorBarMinimum	double	-8000.0
attribute	depth_n	colorBarPalette	String	TopographyDepth
attribute	depth_n	description	String	nominal or target depth; not corrected
attribute	depth_n	long_name	String	Depth
attribute	depth_n	standard_name	String	depth
attribute	depth_n	units	String	meters
variable	depth_flag		byte
attribute	depth_flag	_FillValue	byte	127
attribute	depth_flag	actual_range	byte	0, 8
attribute	depth_flag	bcodmo_name	String	flag
attribute	depth_flag	colorBarMaximum	double	150.0
attribute	depth_flag	colorBarMinimum	double	0.0
attribute	depth_flag	description	String	measurement quality flag
attribute	depth_flag	long_name	String	Depth
attribute	depth_flag	standard_name	String	depth
attribute	depth_flag	units	String	unitless
variable	depth_sd		float
attribute	depth_sd	_FillValue	float	NaN
attribute	depth_sd	actual_range	float	0.1, 118.2
attribute	depth_sd	bcodmo_name	String	unknown
attribute	depth_sd	colorBarMaximum	double	50.0
attribute	depth_sd	colorBarMinimum	double	0.0
attribute	depth_sd	description	String	standard deviation of depth
attribute	depth_sd	long_name	String	Depth
attribute	depth_sd	standard_name	String	depth
attribute	depth_sd	units	String	meters
variable	depth_sd_flag		byte
attribute	depth_sd_flag	_FillValue	byte	127
attribute	depth_sd_flag	actual_range	byte	0, 1
attribute	depth_sd_flag	bcodmo_name	String	flag
attribute	depth_sd_flag	colorBarMaximum	double	50.0
attribute	depth_sd_flag	colorBarMinimum	double	0.0
attribute	depth_sd_flag	description	String	measurement quality flag
attribute	depth_sd_flag	long_name	String	Depth
attribute	depth_sd_flag	standard_name	String	depth
attribute	depth_sd_flag	units	String	unitless
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	748.5, 4889.6
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
attribute	depth	description	String	depth of pump sample as reported in the intermediate US GEOTRACES master file. Observation/sample depth in meters calculated from CTD pressure.
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	depth_GEOTRC_CTD_round		short
attribute	depth_GEOTRC_CTD_round	_FillValue	short	32767
attribute	depth_GEOTRC_CTD_round	actual_range	short	749, 4890
attribute	depth_GEOTRC_CTD_round	bcodmo_name	String	depth
attribute	depth_GEOTRC_CTD_round	colorBarMaximum	double	8000.0
attribute	depth_GEOTRC_CTD_round	colorBarMinimum	double	-8000.0
attribute	depth_GEOTRC_CTD_round	colorBarPalette	String	TopographyDepth
attribute	depth_GEOTRC_CTD_round	description	String	rounded depth of pump sample to nearest meater. Observation/sample depth in meters calculated from CTD pressure.
attribute	depth_GEOTRC_CTD_round	long_name	String	Depth
attribute	depth_GEOTRC_CTD_round	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth_GEOTRC_CTD_round	standard_name	String	depth
attribute	depth_GEOTRC_CTD_round	units	String	meters
variable	sample_GEOTRC		short
attribute	sample_GEOTRC	_FillValue	short	32767
attribute	sample_GEOTRC	actual_range	short	5033, 8148
attribute	sample_GEOTRC	bcodmo_name	String	sample
attribute	sample_GEOTRC	description	String	Unique identifying number for US GEOTRACES samples; ranges from 5033 to 6078 for KN199-04 and from 6112 to 8148 for KN204-01. PI-supplied values were identical to those in the intermediate US GEOTRACES master file Originally submitted as 'sample'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
attribute	sample_GEOTRC	long_name	String	Sample GEOTRC
attribute	sample_GEOTRC	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	sample_GEOTRC	units	String	unitless
variable	sample_bottle_GEOTRC		byte
attribute	sample_bottle_GEOTRC	_FillValue	byte	127
attribute	sample_bottle_GEOTRC	actual_range	byte	1, 8
attribute	sample_bottle_GEOTRC	bcodmo_name	String	bottle
attribute	sample_bottle_GEOTRC	description	String	Unique identification numbers given to samples taken from bottles; ranges from 1 to 24; often used synonymously with bottle number. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute	sample_bottle_GEOTRC	long_name	String	Sample Bottle GEOTRC
attribute	sample_bottle_GEOTRC	units	String	integer
variable	bottle_GEOTRC		String
attribute	bottle_GEOTRC	bcodmo_name	String	bottle
attribute	bottle_GEOTRC	description	String	Alphanumeric characters identifying bottle type (e.g.; NIS representing Niskin and GF representing GOFLO) and position on a CTD rosette. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute	bottle_GEOTRC	long_name	String	Bottle GEOTRC
attribute	bottle_GEOTRC	units	String	unitless
variable	sample_GEOTRC_flag		byte
attribute	sample_GEOTRC_flag	_FillValue	byte	127
attribute	sample_GEOTRC_flag	actual_range	byte	0, 1
attribute	sample_GEOTRC_flag	bcodmo_name	String	flag
attribute	sample_GEOTRC_flag	colorBarMaximum	double	150.0
attribute	sample_GEOTRC_flag	colorBarMinimum	double	0.0
attribute	sample_GEOTRC_flag	description	String	measurement quality flag
attribute	sample_GEOTRC_flag	long_name	String	Sample GEOTRC Flag
attribute	sample_GEOTRC_flag	units	String	unitless
variable	BTL_ISO_DateTime_UTC		String
attribute	BTL_ISO_DateTime_UTC	bcodmo_name	String	ISO_DateTime_UTC
attribute	BTL_ISO_DateTime_UTC	description	String	Date and time of bottle sample; UTC; ISO formatL yyyy-mm-ddTHH:MM:SS.ssZ
attribute	BTL_ISO_DateTime_UTC	long_name	String	BTL ISO Date Time UTC
attribute	BTL_ISO_DateTime_UTC	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	BTL_ISO_DateTime_UTC	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.28728302E9, 1.32347478E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	date and time of the midpoint of pumping of the shallow pump cast of the station. Note that both shallow and deep pump casts were assigned the same date and time stamp to facilitate station recognition in ODV
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	ISO Date Time UTC
attribute	time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	time	source_name	String	ISO_DateTime_UTC
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	time_precision	String	1970-01-01T00:00Z
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	pump		byte
attribute	pump	_FillValue	byte	127
attribute	pump	actual_range	byte	1, 9
attribute	pump	bcodmo_name	String	unknown
attribute	pump	description	String	McLane in-situ pump identifier
attribute	pump	long_name	String	Pump
attribute	pump	units	String	unitless
variable	pump_flag		byte
attribute	pump_flag	_FillValue	byte	127
attribute	pump_flag	actual_range	byte	0, 0
attribute	pump_flag	bcodmo_name	String	flag
attribute	pump_flag	colorBarMaximum	double	150.0
attribute	pump_flag	colorBarMinimum	double	0.0
attribute	pump_flag	description	String	measurement quality flag
attribute	pump_flag	long_name	String	Pump Flag
attribute	pump_flag	units	String	unitless
variable	vol_QMA		float
attribute	vol_QMA	_FillValue	float	NaN
attribute	vol_QMA	actual_range	float	0.3, 1927.9
attribute	vol_QMA	bcodmo_name	String	vol_filt
attribute	vol_QMA	description	String	volume pumped through the filter holder containing paired QMA filters
attribute	vol_QMA	long_name	String	Vol QMA
attribute	vol_QMA	units	String	liters
variable	vol_QMA_flag		byte
attribute	vol_QMA_flag	_FillValue	byte	127
attribute	vol_QMA_flag	actual_range	byte	0, 0
attribute	vol_QMA_flag	bcodmo_name	String	flag
attribute	vol_QMA_flag	colorBarMaximum	double	150.0
attribute	vol_QMA_flag	colorBarMinimum	double	0.0
attribute	vol_QMA_flag	description	String	measurement quality flag
attribute	vol_QMA_flag	long_name	String	Vol QMA Flag
attribute	vol_QMA_flag	units	String	unitless
variable	vol_Supor		float
attribute	vol_Supor	_FillValue	float	NaN
attribute	vol_Supor	actual_range	float	0.0, 838.4
attribute	vol_Supor	bcodmo_name	String	vol_filt
attribute	vol_Supor	description	String	volume pumped through the filter holder containing paired Supor filters
attribute	vol_Supor	long_name	String	Vol Supor
attribute	vol_Supor	units	String	liters
variable	vol_Supor_flag		byte
attribute	vol_Supor_flag	_FillValue	byte	127
attribute	vol_Supor_flag	actual_range	byte	0, 1
attribute	vol_Supor_flag	bcodmo_name	String	flag
attribute	vol_Supor_flag	colorBarMaximum	double	150.0
attribute	vol_Supor_flag	colorBarMinimum	double	0.0
attribute	vol_Supor_flag	description	String	measurement quality flag
attribute	vol_Supor_flag	long_name	String	Vol Supor Flag
attribute	vol_Supor_flag	units	String	unitless
variable	opal_sink		float
attribute	opal_sink	_FillValue	float	NaN
attribute	opal_sink	actual_range	float	0.0, 12.645
attribute	opal_sink	bcodmo_name	String	trace_metal_conc
attribute	opal_sink	description	String	amorphous/biogenic silica from the sinking size fraction (>51 um)
attribute	opal_sink	long_name	String	Opal Sink
attribute	opal_sink	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P03/current/C035/
attribute	opal_sink	units	String	micrograms/liter
variable	opal_sink_flag		byte
attribute	opal_sink_flag	_FillValue	byte	127
attribute	opal_sink_flag	actual_range	byte	1, 4
attribute	opal_sink_flag	bcodmo_name	String	flag
attribute	opal_sink_flag	colorBarMaximum	double	150.0
attribute	opal_sink_flag	colorBarMinimum	double	0.0
attribute	opal_sink_flag	description	String	measurement quality flag
attribute	opal_sink_flag	long_name	String	Opal Sink Flag
attribute	opal_sink_flag	units	String	integer
variable	opal_sink_sd		float
attribute	opal_sink_sd	_FillValue	float	NaN
attribute	opal_sink_sd	actual_range	float	7.0E-4, 0.0395
attribute	opal_sink_sd	bcodmo_name	String	trace_metal_sd
attribute	opal_sink_sd	colorBarMaximum	double	50.0
attribute	opal_sink_sd	colorBarMinimum	double	0.0
attribute	opal_sink_sd	description	String	error reported as the 1-sigma variation for amorphous/biogenic silica from the sinking size fraction (>51 um)
attribute	opal_sink_sd	long_name	String	Opal Sink Sd
attribute	opal_sink_sd	units	String	micrograms/liter
variable	opal_sink_sd_flag		byte
attribute	opal_sink_sd_flag	_FillValue	byte	127
attribute	opal_sink_sd_flag	actual_range	byte	0, 4
attribute	opal_sink_sd_flag	bcodmo_name	String	flag
attribute	opal_sink_sd_flag	colorBarMaximum	double	50.0
attribute	opal_sink_sd_flag	colorBarMinimum	double	0.0
attribute	opal_sink_sd_flag	description	String	measurement quality flag
attribute	opal_sink_sd_flag	long_name	String	Opal Sink Sd Flag
attribute	opal_sink_sd_flag	units	String	integer
variable	opal_susp		float
attribute	opal_susp	_FillValue	float	NaN
attribute	opal_susp	actual_range	float	0.0, 28.3896
attribute	opal_susp	bcodmo_name	String	trace_metal_conc
attribute	opal_susp	description	String	amorphous/biogenic silica from the suspended size fraction (
attribute	opal_susp	long_name	String	Opal Susp
attribute	opal_susp	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P03/current/C035/
attribute	opal_susp	units	String	micrograms/liter
variable	opal_susp_flag		byte
attribute	opal_susp_flag	_FillValue	byte	127
attribute	opal_susp_flag	actual_range	byte	1, 4
attribute	opal_susp_flag	bcodmo_name	String	flag
attribute	opal_susp_flag	colorBarMaximum	double	150.0
attribute	opal_susp_flag	colorBarMinimum	double	0.0
attribute	opal_susp_flag	description	String	measurement quality flag
attribute	opal_susp_flag	long_name	String	Opal Susp Flag
attribute	opal_susp_flag	units	String	integer
variable	opal_susp_sd		float
attribute	opal_susp_sd	_FillValue	float	NaN
attribute	opal_susp_sd	actual_range	float	0.006, 0.0249
attribute	opal_susp_sd	bcodmo_name	String	trace_metal_sd
attribute	opal_susp_sd	colorBarMaximum	double	50.0
attribute	opal_susp_sd	colorBarMinimum	double	0.0
attribute	opal_susp_sd	description	String	error reported as the 1-sigma variation amorphous/biogenic silica from the suspended size fraction (
attribute	opal_susp_sd	long_name	String	Opal Susp Sd
attribute	opal_susp_sd	units	String	micrograms/liter
variable	opal_susp_sd_flag		byte
attribute	opal_susp_sd_flag	_FillValue	byte	127
attribute	opal_susp_sd_flag	actual_range	byte	0, 4
attribute	opal_susp_sd_flag	bcodmo_name	String	flag
attribute	opal_susp_sd_flag	colorBarMaximum	double	50.0
attribute	opal_susp_sd_flag	colorBarMinimum	double	0.0
attribute	opal_susp_sd_flag	description	String	measurement quality flag
attribute	opal_susp_sd_flag	long_name	String	Opal Susp Sd Flag
attribute	opal_susp_sd_flag	units	String	integer
variable	TPC_sink		float
attribute	TPC_sink	_FillValue	float	NaN
attribute	TPC_sink	actual_range	float	0.006, 27.226
attribute	TPC_sink	bcodmo_name	String	unknown
attribute	TPC_sink	description	String	total particulate carbon from the sinking size fraction (>51 um)
attribute	TPC_sink	long_name	String	TPC Sink
attribute	TPC_sink	units	String	micrograms/liter
variable	TPC_sink_flag		byte
attribute	TPC_sink_flag	_FillValue	byte	127
attribute	TPC_sink_flag	actual_range	byte	1, 8
attribute	TPC_sink_flag	bcodmo_name	String	flag
attribute	TPC_sink_flag	colorBarMaximum	double	150.0
attribute	TPC_sink_flag	colorBarMinimum	double	0.0
attribute	TPC_sink_flag	description	String	measurement quality flag
attribute	TPC_sink_flag	long_name	String	TPC Sink Flag
attribute	TPC_sink_flag	units	String	integer
variable	TPC_sink_sd		float
attribute	TPC_sink_sd	_FillValue	float	NaN
attribute	TPC_sink_sd	actual_range	float	0.006, 0.029
attribute	TPC_sink_sd	bcodmo_name	String	unknown
attribute	TPC_sink_sd	colorBarMaximum	double	50.0
attribute	TPC_sink_sd	colorBarMinimum	double	0.0
attribute	TPC_sink_sd	description	String	error reported as the 1-sigma variation for total particulate carbon from the sinking size fraction (>51um)
attribute	TPC_sink_sd	long_name	String	TPC Sink Sd
attribute	TPC_sink_sd	units	String	micrograms/liter
variable	TPC_sink_sd_flag		byte
attribute	TPC_sink_sd_flag	_FillValue	byte	127
attribute	TPC_sink_sd_flag	actual_range	byte	0, 1
attribute	TPC_sink_sd_flag	bcodmo_name	String	flag
attribute	TPC_sink_sd_flag	colorBarMaximum	double	50.0
attribute	TPC_sink_sd_flag	colorBarMinimum	double	0.0
attribute	TPC_sink_sd_flag	description	String	measurement quality flag
attribute	TPC_sink_sd_flag	long_name	String	TPC Sink Sd Flag
attribute	TPC_sink_sd_flag	units	String	integer
variable	TPC_susp		float
attribute	TPC_susp	_FillValue	float	NaN
attribute	TPC_susp	actual_range	float	0.27, 45.147
attribute	TPC_susp	bcodmo_name	String	unknown
attribute	TPC_susp	description	String	total particulate carbon from the suspended size fraction (
attribute	TPC_susp	long_name	String	TPC Susp
attribute	TPC_susp	units	String	micrograms/liter
variable	TPC_susp_flag		byte
attribute	TPC_susp_flag	_FillValue	byte	127
attribute	TPC_susp_flag	actual_range	byte	1, 4
attribute	TPC_susp_flag	bcodmo_name	String	flag
attribute	TPC_susp_flag	colorBarMaximum	double	150.0
attribute	TPC_susp_flag	colorBarMinimum	double	0.0
attribute	TPC_susp_flag	description	String	measurement quality flag
attribute	TPC_susp_flag	long_name	String	TPC Susp Flag
attribute	TPC_susp_flag	units	String	integer
variable	TPC_susp_sd		float
attribute	TPC_susp_sd	_FillValue	float	NaN
attribute	TPC_susp_sd	actual_range	float	0.065, 0.38
attribute	TPC_susp_sd	bcodmo_name	String	unknown

Row Type

Variable Name

Attribute Name

Data Type

Value

attribute

NC_GLOBAL

access_formats

String

.htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt

attribute

NC_GLOBAL

acquisition_description

String

Sampling and Analytical Methodology:\\u00a0\n \n1\\. Sampling:\n \nSize-fractionated particles were collected using McLane Research in-situ pumps\n(WTS-LV) that had been modified to accommodate two flowpaths (Lam and Morris\nPatent pending).\\u00a0 Typically, two casts of 8 pumps each and two filter\nholders per pump were deployed to collect a 16-depth profile.\\u00a0 The wire-\nout was used to target nominal depths ('depth_n') during deployment. A self-\nrecording Seabird 19plus CTD was deployed at the end of the line for both\ncruises. On the second cruise, three RBR data loggers were also attached to\npumps #2, #5, and #8 to help correct for actual depths ('depth') during\npumping. For the first cruise (KN199-4), the recorded CTD depth was near its\ntarget depth and had a small standard deviation over the course of pumping, so\nwe report the target depth ('depth_n') as the final depth ('depth').\\u00a0 For\nthe second cruise, the target depth ('depth_n') is not the same as the final\ndepth ('depth'), since some casts experienced significant wire angles\n(especially in the western boundary currents), so we corrected for the wire\nangle based on the recorded depths in the three data loggers and terminal CTD.\n\\u00a0\n \nFilter holders used were 142 mm-diameter 'mini-MULVFS' style filter holders\nwith two stages for two size fractions and multiple baffle systems designed to\nensure even particle distribution and prevent particle loss (Bishop et al.\n2012).\\u00a0 One filter holder/flowpath was loaded with a 51micron Sefar\npolyester mesh prefilter followed by paired Whatman QMA quartz fiber filters.\nThe other filter holder/flowpath was also loaded with a 51micron prefilter,\nbut followed by paired 0.8micron Pall Supor800 polyethersulfone filters.\\u00a0\nThese filter combinations were chosen as the best compromise after extensive\ntesting during the intercalibration process (Bishop et al. 2012).\\u00a0 Each\ncast also had a full set of 'dipped blank' filters deployed.\\u00a0 These were\nthe full filters sets (prefilter followed by paired QMA or paired Supor\nfilters) sandwiched within a 1micron polyester mesh filter, loaded into\nperforated polypropylene containers, and attached with plastic cable ties to a\npump frame, and deployed.\\u00a0 Dipped blank filters were exposed to seawater\nfor the length of the deployment and processed and analyzed as regular\nsamples, and thus functioned as full seawater process blanks. \\u00a0\n \nAll filters and filter holders were acid leached prior to use according to\nmethods recommended in the GEOTRACES sample and sample-handing Protocols\n(Geotraces 2010).\n \nIn this dataset, data reported from the 51micron prefilter are referred to\nwith a 'sink' suffix to indicate the sinking size fraction (>51micron); data\nreported from the main filters (QMA - 1-51micron - or Supor - 0.8 micron-\n51micron) are from the top filter of the pair only, and are referred to with a\n'susp' suffix to indicate the suspended size fraction.\n \n2\\. Analytical Methodology:\n \n2.1. Opal (amorphous silica) \n A 1/16 subsample of the top 0.8micron Supor filter, equivalent to ~30L, or\nof the 51micron polyester prefilter above the QMA filter, equivalent to ~60L,\nwas analyzed for amorphous/biogenic Si concentrations using standard\nspectrophotometric detection of the blue silico-molydate complex. We slightly\nmodified DeMaster\\u2019s time-series approach developed for marine sediments\nto correct for the contribution of lithogenic silica to the leachate (Demaster\n1981), using 20mL 0.2N NaOH at 85\\u00b0C for the leach, and taking a 1.6mL\nsubsample every hour for 3 hours.\\u00a0 The slope of the fit was negligible\nfor shallow samples but generally increased with depth of the sample, a\nreflection of the increasing importance of lithogenic silica to total silica\nwith depth; we thus proceeded with a 1 hour incubation time for shallow cast\nsamples (<900m), and continued the time-series approach for deep cast samples\n(>900m).\\u00a0 Dipped blank filters from both shallow and deep casts were used\nto correct the Supor data.\\u00a0 For >51 micron samples on polyester\nprefilters, blank corrections were made using the average failed pump values\n(pumps that never turned on, or that shut off after <5% of programmed water\nvolume was filtered) because of anomalously high prefilter dipped blank\nvalues.\n \nThe detection limit was three times the standard deviation of dipped blank\nsamples and was 0.26 and 0.19 micronol Si/filter for shallow and deep Supor\ndipped blank subsamples, respectively, and was 1.05 and 0.35 micronol\nSi/filter for shallow and deep polyester prefilter failed pump subsamples,\nrespectively.\\u00a0 Values below the detection limit are flagged (QF=4).\n \nThe mass of biogenic silica (opal) was calculated assuming a hydrated form of\nsilica: SiO2.(0.4 H2O) (Mortlock and Froelich 1989), or 67.2 g opal/mol bSi.\n \nWe use the standard deviation of the dipped blank filters used in the blank\nsubtraction to estimate error in the reported opal value.\\u00a0 The\nappropriate filter-matched standard deviations were converted to \\u00b5g\nopal/L using volume filtered and reported in the opal_susp_sd, opal_sink_sd\ncolumns, as appropriate.\n \n2.2 Total Particulate Carbon (TPC) \n Total particulate carbon was measured using a Flash EA1112 Carbon/Nitrogen\nAnalyzer using a Dynamic Flash Combustion technique at the WHOI Nutrient\nAnalytical Facility. Suspended particles (1-51micron) were measured for total\nparticulate carbon using one or two 12mm-diameter punches from the top QMA\nfilter, representing the equivalent of 10-20L of material. For the >51micron\nsize fraction, particles from half or a whole 51micron polyester prefilter\nwere rinsed at sea with 1micron-filtered seawater onto a 25mm 0.8micron\nSterlitech Ag filter or 25mm pre-combusted Whatman QMA filter before being\ndried at 60\\u00b0C.\\u00a0 A quarter of the Ag or QMA filter containing rinsed\nparticles was analyzed for total particulate carbon, typically representing\n60-120L of material. \n We use the standard deviation of the dipped blank filters used in the blank\nsubtraction to estimate error in the TPC measurement.\\u00a0 For TPC in the\nsuspended (0.8-51 micron) size fraction (TPC_susp), the standard deviation of\n8 dipped blank or failed pump QMA filters (6.95 micronol C/filter for\nQMA).\\u00a0 For TPC in the sinking (>51 micron) size fraction, the standard\ndeviation of 8 dipped blank filters rinsed onto Ag and onto QMA were 0.52\nmicronol C/filter and 0.59 micronol C/filter, respectively.\\u00a0 The\nappropriate filter-matched standard deviations were converted to \\u00b5g C/L\nusing volume filtered and reported in the TPC_susp_sd, TPC_sink_sd columns, as\nappropriate.\n \n 2.3 Particulate Inorganic Carbon (PIC) and CaCO3 \n PIC was measured using one of four methods noted in data column\n'PIC_method': \n 1.\\u00a0\\u00a0 \\u00a0Directly by coulometry (measurement of CO2 following\nclosed-system conversion of PIC to CO2 upon addition of 1N phosphoric acid to\na QMA punch or 1/16 polyester prefilter) (Honjo et al. 1995) \n As CaCO3 from the measurement of salt-corrected Ca (using Na for salt\ncorrection) (Lam and Bishop 2007) on a 1/16 subsample of Supor or polyester\nprefilter or 2 QMA punches (2% of filter area) and measured by: \n 2.\\u00a0\\u00a0 \\u00a0ICP-MS at WHOI following a 2 hr room temperature 25%\nglacial acetic acid leach, which was dried down and brought back up in 5% HNO3 \n 3.\\u00a0\\u00a0 \\u00a0ICP-MS at WHOI following a 5% (0.6N) HCl leach for\n12-16 hrs at 60\\u00b0C and diluted to 1% HCl \n 4.\\u00a0\\u00a0 \\u00a0ICP-AES at Boston University following a 5% HCl leach\novernight at room temperature \n Intercomparability between methods was tested by running select samples in\nreplicate by different methods.\\u00a0 PIC_methods 1,2,3 had good\nintercomparability.\\u00a0 There was a 20-30% offset in samples analyzed by\nPIC_method=4 compared to the other methods.\\u00a0 Data from PIC_method=4 were\nnormalized using replicate analyses from a depth profile (GT11-8 for Supor\nsamples; GT11-24 for prefilter samples).\\u00a0 The resulting dataset has\nimproved oceanographic consistency.\\u00a0 When available, the reported error\nis the standard deviation of replicate analyses (after normalization); if no\nreplicate analyses were made, the reported error is the standard deviation of\nthe dipped blank filters used in the blank subtraction for each method and\nfiltertype, adjusted for volume filtered. The standard deviation of the blank\nsubtraction was 18.3 \\u00b5g PIC/QMA filter for coulometry and 3.0 \\u00b5g\nPIC/prefilter or 11.0 \\u00b5g PIC/Supor filter for ICP-MS. For ICP-AES, the\nstandard deviation of the blank subtraction was 190 \\u00b5g PIC/QMA filter, 61\nor 12 \\u00b5g PIC/Supor filter (depending on the run), and 7.1 \\u00b5g\nPIC/prefilter.\n \nThe mass of CaCO3 is calculated stoichiometrically from the mass of PIC (CaCO3\n[\\u00b5g/L] = 100.08 g CaCO3/12 g C * PIC [\\u00b5g/L])\n \n2.4 Particulate Organic Carbon (POC) \n POC is calculated as the difference between TPC (see 2.2) and PIC (see 2.3).\nAny negative numbers were set to 0.\\u00a0 Errors were propagated from those\nfrom TPC and PIC.\n \n2.5 Particulate Organic Matter (POM) \n POM is calculated from POC (see 2.4) using a weight ratio of 1.88 g POM/g\nPOC (Lam et al. 2011).\n \n2.6 Particulate trace metals (pTM) \n Methods for particulate trace metal (pTM) digestion and analysis are\ndescribed in (Ohnemus et al. submitted) and briefly below.\\u00a0 Total pTM\nconcentrations in the suspended fraction (*_susp) were analyzed from 1/16\nsubsamples of the top Supor (0.8micron) filter.\\u00a0 pTM totals in the\nsinking size fraction (*_sink) were analyzed from 1/8 subsamples (typically\n~150L) of the QMA-side 51micron pre-filter. Pre-filter particles were rinsed\nat sea onto 25mm Supor (0.8micron) filter discs using 0.2micron-filtered\nsurface seawater collected using clean techniques from an underway Fish system\n(Bruland et al. 2005).\\u00a0 In Teflon vials (Savillex), samples were first\ndigested using a 3:1 mixture of sulfuric acid and hydrogen peroxide at high\nheat to remove the Supor filter matrix, then dried. A mixture of HCl/HNO3/HF\nacids (all acids 4N, heated to 135\\u00b0C for 4 hrs) was used to digest the\nmaterial in the remaining pellet, which was then dried, reacted with a small\namount of 50% HNO3/15% H2O2 to remove any remaining organics, dried, and\nresuspended in 5% HNO3\\u00ac for analysis via ICP-MS (Element 2, Thermo-\nFinnigan).\\u00a0 Elemental concentrations were standardized using multi-\nelement, external standard curves prepared from NIST atomic absorption-\nstandards in 5% HNO3\\u00ac.\\u00a0 Standard curves were fitted using weighted\nleast squares fits that consider instrument analytical uncertainties.\\u00a0\nData are reported in units of [nmoles per L of seawater filtered] and have had\nthe median of multiple (typically 12-16) dipped blank filters (analyzed using\nidentical methods) subtracted.\\u00a0 The detection limit of most elements was\ndefined as 3 times the standard deviation of 12-16 dipped blank\nfilters.\\u00a0\\u00a0 We define the detection limit for Ti to be one standard\ndeviation of the dipped blanks filters.\\u00a0 The median and standard\ndeviation of the dipped blank filters and detection limits for the Supor\n(0.8-51 micron size fraction) and polyester prefilter (>51micron size\nfraction) are reported in the following table in nmol per whole filter (NB:\nfilter area of 142mm filter is 158.4 cm2):\n \nTable 1: Dipped (filter) blanks and detection limits for 0.8-51um samples for\n142mm filters (nmol/filter) ([Table 1 PDF file](\\\\\"http://data.bco-\ndmo.org/GEOTRACES/Lam/Lam_particulateComp_table1_v3.pdf\\\\\"))\n \nIn table 1 the errors (*_susp_error, *_sink_error) are reported as the 1-sigma\nvariation of propagated instrumental analytical and standard curve\nuncertainties, and the variation in subtracted dipped blank filters.\n \nThe completeness of our digestion method for trace elements was assessed by\ndigesting and analyzing three certified reference materials: a freshwater\nplankton CRM from the European Commision Community Bureau of Reference\n(BCR-414), and two marine sediments from the National Research Council of\nCanada (PACS-1 and MESS-3).\\u00a0 Certified values with their standard\ndeviation and recoveries from our lab with standard deviations, are presented\nin the table appended at the end of this document.\n \n2.7 Lithogenic material \n Al is usually used as a tracer of lithogenic material since it is the third\nmost abundant element in Earth\\u2019s crust after Si and O.\\u00a0 Al has the\nadded advantage that its concentration does not vary much between upper\ncontinental crust (UCC Al = 8.04% by weight) and bulk continental crust (BCC\nAl = 8.41wt%), so the estimate of lithogenic mass is not very sensitive to\nlithogenic source regions.\\u00a0 However, our data suggests that there is\nconsiderable scavenged Al in particles near the coasts, which would lead to\noverestimates of lithogenic mass in coastal samples.\\u00a0 We thus calculate\nlithogenic mass two ways: 1) using the UCC Al concentration of 8.04% to\ncalculate lithogenic mass (Litho_AlUCC), and 2) using Ti, a lithogenic tracer\nthat appears to be less affected by scavenging (Litho_TiDust).\\u00a0 Ti has\nthe disadvantage of varying greatly as a function of different source regions\n(e.g., UCC Ti=0.3wt% and BCC Ti=0.54wt%).\\u00a0\\u00a0 We make the assumption\nthat the source of the lithogenic material is from African dust, and use the\nconcentration of Ti and Al in aerosols collected on four samples between Cape\nVerde and Mauritania (Shelley and Landing, personal communication) to estimate\na Ti composition of 0.6 wt% to estimate lithogenic mass (Litho_TiDust).\\u00a0\nWe estimate an uncertainty in the lithogenic mass derived from Ti of 7%, which\nis the propogated uncertainty of the analytical error (1 sigma) of Ti (6%) and\nthe variability in the estimate of the Ti composition of the collected\naerosols (4%).\\u00a0 The Ti-based estimate (Litho_TiDust) is the one that we\nuse in subsequent calculations (eg., suspended particulate mass, section 2.9).\n \n2.8 Fe and Mn oxyhydroxides \n Fe and Mn in oxyhydroxides were calculated by subtracting Fe and Mn\nassociated with lithogenic material.\\u00a0 Unlike Al, crustal Fe, Mn, and Ti\nvary as a function of crustal material, but the ratios of Fe and Mn to Ti are\nless variable. We therefore use Fe/Ti = 8.736 (mole ratio) and Mn/Ti = 0.1268\n(mole ratio) derived from aerosols collected on four samples between Cape\nVerde and Mauritania (Shelley and Landing, personal communication) to subtract\nthe lithogenic contributions of Fe and Mn to derive Fe(OH)3_TiDust and\nMnO2_TiDust.\\u00a0 For comparison, UCC Fe/Ti and Mn/Ti mole ratios are 10.0\nand 0.1745, respectively. Variability in the Fe/Ti and Mn/Ti ratios in the\naerosols and analytical errors for Fe, Mn, and Ti were propagated to determine\nthe error for Fe and Mn oxyhydroxides.\\u00a0 The variability in the Fe/Ti and\nMn/Ti ratios in the aerosols was 2% and 6%, respectively.\\u00a0 Typical\nanalytical errors for Fe, Mn, and Ti are 3%, 3%, and 6%, respectively. We\napproximate the formulae for Fe and Mn oxyhydroxides to be Fe(OH)3\n(ferrihydrite approximation) and MnO2 (birnessite approximation), with formula\nweights 106.9 g Fe(OH)3/mol Fe and 86.9 g MnO2/mol Mn, respectively. Negative\nnumbers were set to 0.\n \n2.9 Suspended particulate mass \\u00a0 \n Suspended particulate mass in the sinking (>51micron) and suspended\n(1-51micron) size fractions was estimated as the chemical dry weight of the\nmajor particulate phases, which is the sum of POM, opal, CaCO3, lithogenic\nmaterial from Ti (Litho_TiDust), and Fe and Mn oxyhydroxides, and is\ncalculated as: \n SPM = 100.08 g CaCO3/12 g C * PIC [\\u00b5g/L] + opal [\\u00b5g/L] + 1.88 g\nPOM/g POC * POC [\\u00b5g/L] + ... \n \\u00a0\\u00a0 \\u00a0Litho_TiDust [\\u00b5g/L] + Fe(OH)3_TiDust [\\u00b5g/L] +\nMnO2_TiDust [\\u00b5g/L] \n Note that the resolution of this data is dictated by the lowest resolution\nof the component parts.

attribute

NC_GLOBAL

awards_0_award_nid

String

55161

attribute

NC_GLOBAL

awards_0_award_number

String

OCE-0963026

attribute

NC_GLOBAL

awards_0_data_url

String

http://www.nsf.gov/awardsearch/showAward?AWD_ID=0963026 (external link)

attribute

NC_GLOBAL

awards_0_funder_name

String

NSF Division of Ocean Sciences

attribute

NC_GLOBAL

awards_0_funding_acronym

String

NSF OCE

attribute

NC_GLOBAL

awards_0_funding_source_nid

String

355

attribute

NC_GLOBAL

awards_0_program_manager

String

Donald L. Rice

attribute

NC_GLOBAL

awards_0_program_manager_nid

String

51467

attribute

NC_GLOBAL

cdm_data_type

String

Other

attribute

NC_GLOBAL

comment

String

Size-fractionated major and minor particle composition and concentration from GEOTRACES NAZT cruises \n PI: P. Lam (WHOI) \n version 5.1: 2020-02-26 [changed displayed order of columns] \n [replaces version 5: 2018-08-06 [corrected data - see documentation] \n [replaces version 4: 2014-12-12 [corrected data - see documentation] \n [replaces version 3: 31 October 2013] \n [replaces version 2b: 14 June 2013] \n [replaces version 2: 11 April 2013: added nominal depths] \n [replaces version 1: 1 February 2013]

attribute

NC_GLOBAL

Conventions

String

COARDS, CF-1.6, ACDD-1.3

attribute

NC_GLOBAL

creator_email

String

info at bco-dmo.org

attribute

NC_GLOBAL

creator_name

String

BCO-DMO

attribute

NC_GLOBAL

creator_type

String

institution

attribute

NC_GLOBAL

creator_url

String

https://www.bco-dmo.org/ (external link)

attribute

NC_GLOBAL

data_source

String

extract_data_as_tsv version 2.3 19 Dec 2019

attribute

NC_GLOBAL

date_created

String

2013-02-01T20:11:44Z

attribute

NC_GLOBAL

date_modified

String

2020-02-26T21:29:25Z

attribute

NC_GLOBAL

defaultDataQuery

String

&time<now

attribute

NC_GLOBAL

doi

String

10.1575/1912/bco-dmo.3871.5.1

attribute

NC_GLOBAL

Easternmost_Easting

double

350.34

attribute

NC_GLOBAL

geospatial_lat_max

double

39.7

attribute

NC_GLOBAL

geospatial_lat_min

double

17.35

attribute

NC_GLOBAL

geospatial_lat_units

String

degrees_north

attribute

NC_GLOBAL

geospatial_lon_max

double

350.34

attribute

NC_GLOBAL

geospatial_lon_min

double

290.20001

attribute

NC_GLOBAL

geospatial_lon_units

String

degrees_east

attribute

NC_GLOBAL

geospatial_vertical_max

double

4889.6

attribute

NC_GLOBAL

geospatial_vertical_min

double

748.5

attribute

NC_GLOBAL

geospatial_vertical_positive

String

down

attribute

NC_GLOBAL

geospatial_vertical_units

String

attribute

NC_GLOBAL

infoUrl

String

https://www.bco-dmo.org/dataset/3871 (external link)

attribute

NC_GLOBAL

institution

String

BCO-DMO

attribute

NC_GLOBAL

instruments_0_acronym

String

CTD Sea-Bird

attribute

NC_GLOBAL

instruments_0_dataset_instrument_description

String

A self-recording Seabird 19plus CTD, deployed at the end of the line for both cruises.

attribute

NC_GLOBAL

instruments_0_dataset_instrument_nid

String

6087

attribute

NC_GLOBAL

instruments_0_description

String

Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

attribute

NC_GLOBAL

instruments_0_instrument_external_identifier

String

https://vocab.nerc.ac.uk/collection/L05/current/130/ (external link)

attribute

NC_GLOBAL

instruments_0_instrument_name

String

CTD Sea-Bird

attribute

NC_GLOBAL

instruments_0_instrument_nid

String

447

attribute

NC_GLOBAL

instruments_0_supplied_name

String

CTD Sea-Bird

attribute

NC_GLOBAL

instruments_1_acronym

String

ICP Mass Spec

attribute

NC_GLOBAL

instruments_1_dataset_instrument_description

String

Used to measure particulate inorganic carbon (PIC) and particulate trace metals (pTM). Instruments were located at WHOI and Boston University.

attribute

NC_GLOBAL

instruments_1_dataset_instrument_nid

String

743391

attribute

NC_GLOBAL

instruments_1_description

String

An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer.

attribute

NC_GLOBAL

instruments_1_instrument_external_identifier

String

https://vocab.nerc.ac.uk/collection/L05/current/LAB15/ (external link)

attribute

NC_GLOBAL

instruments_1_instrument_name

String

Inductively Coupled Plasma Mass Spectrometer

attribute

NC_GLOBAL

instruments_1_instrument_nid

String

530

attribute

NC_GLOBAL

instruments_1_supplied_name

String

Element 2, Thermo-Finnigan

attribute

NC_GLOBAL

instruments_2_acronym

String

McLane Pump

attribute

NC_GLOBAL

instruments_2_dataset_instrument_description

String

Modified to accommodate two flowpaths (Lam and Morris Patent pending). Typically, two casts of 8 pumps each and two filter holders per pump were deployed to collect a 16-depth profile.\nLam, P. J., and P. J. Morris. Patent pending. In situ marine sample collection system and methods. Application No. 13/864,655.

attribute

NC_GLOBAL

instruments_2_dataset_instrument_nid

String

6086

attribute

NC_GLOBAL

instruments_2_description

String

McLane pumps sample large volumes of seawater at depth. They are attached to a wire and lowered to different depths in the ocean. As the water is pumped through the filter, particles suspended in the ocean are collected on the filters. The pumps are then retrieved and the contents of the filters are analyzed in a lab.

attribute

NC_GLOBAL

instruments_2_instrument_name

String

McLane Pump

attribute

NC_GLOBAL

instruments_2_instrument_nid

String

627

attribute

NC_GLOBAL

instruments_2_supplied_name

String

McLane Pump

attribute

NC_GLOBAL

instruments_3_acronym

String

CHN

attribute

NC_GLOBAL

instruments_3_dataset_instrument_description

String

Used to measure total particulate carbon.

attribute

NC_GLOBAL

instruments_3_dataset_instrument_nid

String

743390

attribute

NC_GLOBAL

instruments_3_description

String

A unit that accurately determines the carbon and nitrogen concentrations of organic compounds typically by detecting and measuring their combustion products (CO2 and NO).

attribute

NC_GLOBAL

instruments_3_instrument_name

String

Particulate Organic Carbon/Nitrogen Analyzer

attribute

NC_GLOBAL

instruments_3_instrument_nid

String

654

attribute

NC_GLOBAL

instruments_3_supplied_name

String

Flash EA1112 Carbon/Nitrogen Analyzer

attribute

NC_GLOBAL

keywords

String

Ag_sink, Ag_sink_err, Ag_sink_err_flag, Ag_sink_flag, Ag_susp, Ag_susp_err, Ag_susp_err_flag, Ag_susp_flag, Al_sink, Al_sink_err, Al_sink_err_flag, Al_sink_flag, Al_susp, Al_susp_err, Al_susp_err_flag, AL_susp_flag, Ba_sink, Ba_sink_err, Ba_sink_err_flag, Ba_sink_flag, Ba_susp, Ba_susp_err, Ba_susp_err_flag, Ba_susp_flag, bco, bco-dmo, biological, bottle, bottle_GEOTRC, btl, BTL_ISO_DateTime_UTC, CaCO3_sink, CaCO3_sink_flag, CaCO3_susp, CaCO3_susp_flag, carbonate, cast, cast_flag, cast_GEOTRC, cast_type, Cd_sink, Cd_sink_err, Cd_sink_err_flag, Cd_sink_flag, Cd_susp, Cd_susp_err, Cd_susp_err_flag, Cd_susp_flag, chemical, co3, Co_sink, Co_sink_err, Co_sink_err_flag, Co_sink_flag, Co_susp, Co_susp_err, Co_susp_err_flag, Co_susp_flag, cruise, cruise_id, Cu_sink, Cu_sink_err, Cu_sink_err_flag, Cu_sink_flag, Cu_susp, Cu_susp_err, Cu_susp_err_flag, Cu_susp_flag, data, dataset, date, depth, depth_flag, depth_GEOTRC_CTD, depth_GEOTRC_CTD_round, depth_n, depth_sd, depth_sd_flag, depth_w, dmo, dust, erddap, error, event, event_GEOTRC, Fe_sink, Fe_sink_err, Fe_sink_err_flag, Fe_sink_flag, Fe_susp, Fe_susp_err, Fe_susp_err_flag, Fe_susp_flag, FeOH_3_sink, FeOH_3_sink_flag, FeOH_3_sink_sd, FeOH_3_sink_sd_flag, FeOH_3_susp, FeOH_3_susp_flag, FeOH_3_susp_sd, FeOH_3_susp_sd_flag, flag, geotrc, iso, latitude, litho, Litho_AlUCC_sink, Litho_AlUCC_sink_flag, Litho_AlUCC_sink_sd, Litho_AlUCC_sink_sd_flag, Litho_AlUCC_susp, Litho_AlUCC_susp_flag, Litho_AlUCC_susp_sd, Litho_AlUCC_susp_sd_flag, Litho_TiDust_sink, Litho_TiDust_sink_flag, Litho_TiDust_sink_sd, Litho_TiDust_sink_sd_flag, Litho_TiDust_susp, Litho_TiDust_susp_flag, Litho_TiDust_susp_sd, Litho_TiDust_susp_sd_flag, longitude, management, Mn_sink, Mn_sink_err, Mn_sink_err_flag, Mn_sink_flag, Mn_susp, Mn_susp_err, Mn_susp_err_flag, Mn_susp_flag, MnO2_sink, MnO2_sink_flag, MnO2_sink_sd, MnO2_sink_sd_flag, MnO2_susp, MnO2_susp_flag, MnO2_susp_sd, MnO2_susp_sd_flag, model, Nd_sink, Nd_sink_err, Nd_sink_err_flag, Nd_sink_flag, Nd_susp, Nd_susp_err, Nd_susp_err_flag, Nd_susp_flag, Ni_sink, Ni_sink_err, Ni_sink_err_flag, Ni_sink_flag, Ni_susp, Ni_susp_err, Ni_susp_err_flag, Ni_susp_flag, O2, ocean, oceanography, office, opal, opal_sink, opal_sink_flag, opal_sink_sd, opal_sink_sd_flag, opal_susp, opal_susp_flag, opal_susp_sd, opal_susp_sd_flag, oxygen, P_sink, P_sink_err, P_sink_err_flag, P_sink_flag, P_susp, P_susp_err, P_susp_err_flag, P_susp_flag, Pb_sink, Pb_sink_err, Pb_sink_err_flag, Pb_sink_flag, Pb_susp, Pb_susp_err, Pb_susp_err_flag, Pb_susp_flag, pic, PIC_sink, PIC_sink_flag, PIC_sink_sd, PIC_sink_sd_flag, PIC_susp, PIC_susp_flag, PIC_susp_sd, PIC_susp_sd_flag, poc, POC_sink, POC_sink_flag, POC_sink_sd, POC_sink_sd_flag, POC_susp, POC_susp_flag, POC_susp_sd, POC_susp_sd_flag, pom, POM_sink, POM_sink_flag, POM_susp, POM_susp_flag, preliminary, princeton, pump, pump_flag, qma, sample, sample_bottle_GEOTRC, sample_GEOTRC, sample_GEOTRC_flag, sink, spm, SPM_sink, SPM_sink_flag, SPM_sink_sd, SPM_sink_sd_flag, SPM_susp, SPM_susp_flag, SPM_susp_sd, SPM_susp_sd_flag, station, station_GEOTRC, supor, susp, Th_sink, Th_sink_err, Th_sink_err_flag, Th_sink_flag, Th_susp, Th_susp_err, Th_susp_err_flag, Th_susp_flag, Ti_sink, Ti_sink_err, Ti_sink_err_flag, Ti_sink_flag, Ti_susp, Ti_susp_err, Ti_susp_err_flag, Ti_susp_flag, time, time2, tpc, TPC_sink, TPC_sink_flag, TPC_sink_sd, TPC_sink_sd_flag, TPC_susp, TPC_susp_flag, TPC_susp_sd, TPC_susp_sd_flag, type, ucc, v, V_sink, V_sink_err, V_sink_err_flag, V_sink_flag, V_susp, V_susp_err, V_susp_err_flag, V_susp_flag, vol, vol_QMA, vol_QMA_flag, vol_Supor, vol_Supor_flag, Y_sink, Y_sink_err, Y_sink_err_flag, Y_sink_flag, Y_susp, Y_susp_err, Y_susp_err_flag, Y_susp_flag, Zn_sink, Zn_sink_err, Zn_sink_err_flag, Zn_sink_flag, Zn_susp, Zn_susp_err, Zn_susp_err_flag, Zn_susp_flag

attribute

NC_GLOBAL

license

String

https://www.bco-dmo.org/dataset/3871/license (external link)

attribute

NC_GLOBAL

metadata_source

String

https://www.bco-dmo.org/api/dataset/3871 (external link)

attribute

NC_GLOBAL

Northernmost_Northing

double

39.7

attribute

NC_GLOBAL

param_mapping

String

{'3871': {'depth_GEOTRC_CTD': 'flag - depth', 'lat': 'master - latitude', 'lon': 'master - longitude', 'ISO_DateTime_UTC': 'flag - time'}}

attribute

NC_GLOBAL

parameter_source

String

https://www.bco-dmo.org/mapserver/dataset/3871/parameters (external link)

attribute

NC_GLOBAL

people_0_affiliation

String

Woods Hole Oceanographic Institution

attribute

NC_GLOBAL

people_0_affiliation_acronym

String

WHOI

attribute

NC_GLOBAL

people_0_person_name

String

Phoebe J. Lam

attribute

NC_GLOBAL

people_0_person_nid

String

51146

attribute

NC_GLOBAL

people_0_role

String

Principal Investigator

attribute

NC_GLOBAL

people_0_role_type

String

originator

attribute

NC_GLOBAL

people_1_affiliation

String

Woods Hole Oceanographic Institution

attribute

NC_GLOBAL

people_1_affiliation_acronym

String

WHOI

attribute

NC_GLOBAL

people_1_person_name

String

Phoebe J. Lam

attribute

NC_GLOBAL

people_1_person_nid

String

51146

attribute

NC_GLOBAL

people_1_role

String

Contact

attribute

NC_GLOBAL

people_1_role_type

String

attribute

NC_GLOBAL

people_2_affiliation

String

Woods Hole Oceanographic Institution

attribute

NC_GLOBAL

people_2_affiliation_acronym

String

WHOI BCO-DMO

attribute

NC_GLOBAL

people_2_person_name

String

Nancy Copley

attribute

NC_GLOBAL

people_2_person_nid

String

50396

attribute

NC_GLOBAL

people_2_role

String

BCO-DMO Data Manager

attribute

NC_GLOBAL

people_2_role_type

String

attribute

NC_GLOBAL

project

String

U.S. GEOTRACES NAT

attribute

NC_GLOBAL

projects_0_acronym

String

U.S. GEOTRACES NAT

attribute

NC_GLOBAL

projects_0_description

String

Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.\nThe first U.S. GEOTRACES Atlantic Section will be specifically centered around a sampling cruise to be carried out in the North Atlantic in 2010. Ed Boyle (MIT) and Bill Jenkins (WHOI) organized a three-day planning workshop that was held September 22-24, 2008 at the Woods Hole Oceanographic Institution. The main goal of the workshop, sponsored by the National Science Foundation and the U.S. GEOTRACES Scientific Steering Committee, was to design the implementation plan for the first U.S. GEOTRACES Atlantic Section. The primary cruise design motivation was to improve knowledge of the sources, sinks and internal cycling of Trace Elements and their Isotopes (TEIs) by studying their distributions along a section in the North Atlantic (Figure 1). The North Atlantic has the full suite of processes that affect TEIs, including strong meridional advection, boundary scavenging and source effects, aeolian deposition, and the salty Mediterranean Outflow. The North Atlantic is particularly important as it lies at the \"origin\" of the global Meridional Overturning Circulation.\nIt is well understood that many trace metals play important roles in biogeochemical processes and the carbon cycle, yet very little is known about their large-scale distributions and the regional scale processes that affect them. Recent advances in sampling and analytical techniques, along with advances in our understanding of their roles in enzymatic and catalytic processes in the open ocean provide a natural opportunity to make substantial advances in our understanding of these important elements. Moreover, we are motivated by the prospect of global change and the need to understand the present and future workings of the ocean's biogeochemistry. The GEOTRACES strategy is to measure a broad suite of TEIs to constrain the critical biogeochemical processes that influence their distributions. In addition to these \"exotic\" substances, more traditional properties, including macronutrients (at micromolar and nanomolar levels), CTD, bio-optical parameters, and carbon system characteristics will be measured. The cruise starts at Line W, a repeat hydrographic section southeast of Cape Cod, extends to Bermuda and subsequently through the North Atlantic oligotrophic subtropical gyre, then transects into the African coast in the northern limb of the coastal upwelling region. From there, the cruise goes northward into the Mediterranean outflow. The station locations shown on the map are for the \"fulldepth TEI\" stations, and constitute approximately half of the stations to be ultimately occupied.\nFigure 1. The proposed 2010 Atlantic GEOTRACES cruise track plotted on dissolved oxygen at 400 m depth. Data from the World Ocean Atlas (Levitus et al., 2005) were plotted using Ocean Data View (courtesy Reiner Schlitzer). [click on the image to view a larger version]\nHydrography, CTD and nutrient measurements will be supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They will be providing an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch will be provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system.\nThe North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2).\nKN199-04 Cruise Report (PDF)\nFigure 2. The red line shows the cruise track for the first leg of the US Geotraces North Atlantic Transect on the R/V Knorr in October 2010. The rest of the stations (beginning with 13) will be completed in October-December 2011 on the R/V Knorr (courtesy of Bill Jenkins, Chief Scientist, GNAT first leg). [click on the image to view a larger version]\nThe section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3).\nKN204-01A,B Cruise Report (PDF)\nFigure 3. Station locations occupied on the US Geotraces North Atlantic Transect on the R/V Knorr in November 2011. [click on the image to view a larger version]\nData from the North Atlantic Transect cruises are available under the Datasets heading below, and consensus values for the SAFe and North Atlantic GEOTRACES Reference Seawater Samples are available from the GEOTRACES Program Office: Standards and Reference Materials\nADCP data are available from the Currents ADCP group at the University of Hawaii at the links below:KN199-04 (leg 1 of 2010 cruise; Lisbon to Cape Verde)KN199-05 (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)KN204-01A (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)KN204-01B (part 2 of 2011 cruise; Bermuda to Cape Verde)

attribute

NC_GLOBAL

projects_0_end_date

String

2013-08

attribute

NC_GLOBAL

projects_0_geolocation

String

Subtropical western and eastern North Atlantic Ocean

attribute

NC_GLOBAL

projects_0_name

String

U.S. GEOTRACES North Atlantic Transect

attribute

NC_GLOBAL

projects_0_project_nid

String

2066

attribute

NC_GLOBAL

projects_0_project_website

String

https://www.geotraces.org/ (external link)

attribute

NC_GLOBAL

projects_0_start_date

String

2010-10

attribute

NC_GLOBAL

publisher_name

String

Biological and Chemical Oceanographic Data Management Office (BCO-DMO)

attribute

NC_GLOBAL

publisher_type

String

institution

attribute

NC_GLOBAL

sourceUrl

String

(local files)

attribute

NC_GLOBAL

Southernmost_Northing

double

17.35

attribute

NC_GLOBAL

standard_name_vocabulary

String

CF Standard Name Table v55

attribute

NC_GLOBAL

subsetVariables

String

cast_flag,pump_flag,vol_QMA_flag,Litho_AlUCC_sink_sd_flag,Litho_AlUCC_susp_sd_flag,Litho_TiDust_sink_flag,FeOH_3_sink_flag,SPM_sink_sd_flag,SPM_susp_flag,SPM_susp_sd_flag,Nd_sink_flag,Ni_sink_flag,Ni_susp_flag,P_sink_flag,P_susp_flag,V_sink_flag,V_susp_flag,Zn_sink_flag,Zn_susp_flag

attribute

NC_GLOBAL

summary

String

Size-fractionated major and minor particle composition and concentration from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project).

attribute

NC_GLOBAL

time_coverage_end

String

2011-12-09T23:53Z

attribute

NC_GLOBAL

time_coverage_start

String

2010-10-17T02:37Z

attribute

NC_GLOBAL

title

String

[GT10-11 - Particulate composition] - Size-fractionated major and minor particle composition and concentration from R/V Knorr KN199-04 & KN204-01 (GA03) in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES North Atlantic Transect)

attribute

NC_GLOBAL

version

String

attribute

NC_GLOBAL

Westernmost_Easting

double

290.20001

attribute

NC_GLOBAL

xml_source

String

osprey2erddap.update_xml() v1.3

variable

cruise_id

String

attribute

cruise_id

bcodmo_name

String

cruise_id

attribute

cruise_id

description

String

cruise identification

attribute

cruise_id

long_name

String

Cruise Id

attribute

cruise_id

units

String

text

variable

station_GEOTRC

byte

attribute

station_GEOTRC

_FillValue

byte

127

attribute

station_GEOTRC

actual_range

byte

1, 24

attribute

station_GEOTRC

bcodmo_name

String

station

attribute

station_GEOTRC

description

String

GEOTRACES station number; ranges from 1 through 12 for KN199-04 and 1 through 24 for KN204-01. Stations 7 and 9 were skipped on KN204-01. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'station'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.

attribute

station_GEOTRC

long_name

String

Station GEOTRC

attribute

station_GEOTRC

units

String

unitless

variable

latitude

double

attribute

latitude

_CoordinateAxisType

String

Lat

attribute

latitude

_FillValue

double

NaN

attribute

latitude

actual_range

double

17.35, 39.7

attribute

latitude

axis

String

attribute

latitude

bcodmo_name

String

latitude

attribute

latitude

colorBarMaximum

double

90.0

attribute

latitude

colorBarMinimum

double

-90.0

attribute

latitude

description

String

latitude of the shallow pump cast of the station; north is positive

attribute

latitude

ioos_category

String

Location

attribute

latitude

long_name

String

Latitude

attribute

latitude

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)

attribute

latitude

standard_name

String

latitude

attribute

latitude

units

String

degrees_north

variable

longitude

double

attribute

longitude

_CoordinateAxisType

String

Lon

attribute

longitude

_FillValue

double

NaN

attribute

longitude

actual_range

double

290.20001, 350.34

attribute

longitude

axis

String

attribute

longitude

bcodmo_name

String

longitude

attribute

longitude

colorBarMaximum

double

180.0

attribute

longitude

colorBarMinimum

double

-180.0

attribute

longitude

description

String

longitude of the shallow pump cast of the station; east is positive

attribute

longitude

ioos_category

String

Location

attribute

longitude

long_name

String

Longitude

attribute

longitude

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)

attribute

longitude

standard_name

String

longitude

attribute

longitude

units

String

degrees_east

variable

date

int

attribute

date

_FillValue

int

2147483647

attribute

date

actual_range

int

20101017, 20111209

attribute

date

bcodmo_name

String

date

attribute

date

description

String

date of the midpoint of pumping of the shallow pump cast of the station in the format yyyymmdd

attribute

date

long_name

String

Date

attribute

date

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)

attribute

date

units

String

unitless

variable

time2

short

attribute

time2

_FillValue

short

32767

attribute

time2

actual_range

short

25, 2353

attribute

time2

bcodmo_name

String

time

attribute

time2

description

String

time of the midpoint of pumping of the shallow pump cast of the station in the format HHMM

attribute

time2

long_name

String

Time

attribute

time2

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/ (external link)

attribute

time2

units

String

unitless

variable

depth_w

short

attribute

depth_w

_FillValue

short

32767

attribute

depth_w

actual_range

short

2150, 5851

attribute

depth_w

bcodmo_name

String

depth_w

attribute

depth_w

colorBarMaximum

double

8000.0

attribute

depth_w

colorBarMinimum

double

-8000.0

attribute

depth_w

colorBarPalette

String

TopographyDepth

attribute

depth_w

description

String

depth of the water

attribute

depth_w

long_name

String

Depth

attribute

depth_w

standard_name

String

depth

attribute

depth_w

units

String

meters

variable

cast_GEOTRC

byte

attribute

cast_GEOTRC

_FillValue

byte

127

attribute

cast_GEOTRC

actual_range

byte

2, 9

attribute

cast_GEOTRC

bcodmo_name

String

cast

attribute

cast_GEOTRC

description

String

cast identifier numbered consecutively within a station. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'cast'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.

attribute

cast_GEOTRC

long_name

String

Cast GEOTRC

attribute

cast_GEOTRC

units

String

integer

variable

cast_flag

byte

attribute

cast_flag

_FillValue

byte

127

attribute

cast_flag

actual_range

byte

0, 0

attribute

cast_flag

bcodmo_name

String

flag

attribute

cast_flag

colorBarMaximum

double

150.0

attribute

cast_flag

colorBarMinimum

double

0.0

attribute

cast_flag

description

String

measurement quality flag

attribute

cast_flag

long_name

String

Cast Flag

attribute

cast_flag

units

String

unitless

variable

cast_type

byte

attribute

cast_type

_FillValue

byte

127

attribute

cast_type

actual_range

byte

1, 2

attribute

cast_type

bcodmo_name

String

cast_type

attribute

cast_type

description

String

1 is a shallow cast; 2 is a deep cast

attribute

cast_type

long_name

String

Cast Type

attribute

cast_type

units

String

integer

variable

event_GEOTRC

short

attribute

event_GEOTRC

_FillValue

short

32767

attribute

event_GEOTRC

actual_range

short

2009, 3282

attribute

event_GEOTRC

bcodmo_name

String

event

attribute

event_GEOTRC

description

String

Unique identifying number for US GEOTRACES sampling events; ranges from 2001 to 2225 for KN199-04 events and from 3001 to 3282 for KN204-01 events. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'event'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.

attribute

event_GEOTRC

long_name

String

Event GEOTRC

attribute

event_GEOTRC

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)

attribute

event_GEOTRC

units

String

unitless

variable

depth_n

short

attribute

depth_n

_FillValue

short

32767

attribute

depth_n

actual_range

short

26, 5485

attribute

depth_n

bcodmo_name

String

depth_n

attribute

depth_n

colorBarMaximum

double

8000.0

attribute

depth_n

colorBarMinimum

double

-8000.0

attribute

depth_n

colorBarPalette

String

TopographyDepth

attribute

depth_n

description

String

nominal or target depth; not corrected

attribute

depth_n

long_name

String

Depth

attribute

depth_n

standard_name

String

depth

attribute

depth_n

units

String

meters

variable

depth_flag

byte

attribute

depth_flag

_FillValue

byte

127

attribute

depth_flag

actual_range

byte

0, 8

attribute

depth_flag

bcodmo_name

String

flag

attribute

depth_flag

colorBarMaximum

double

150.0

attribute

depth_flag

colorBarMinimum

double

0.0

attribute

depth_flag

description

String

measurement quality flag

attribute

depth_flag

long_name

String

Depth

attribute

depth_flag

standard_name

String

depth

attribute

depth_flag

units

String

unitless

variable

depth_sd

float

attribute

depth_sd

_FillValue

float

NaN

attribute

depth_sd

actual_range

float

0.1, 118.2

attribute

depth_sd

bcodmo_name

String

unknown

attribute

depth_sd

colorBarMaximum

double

50.0

attribute

depth_sd

colorBarMinimum

double

0.0

attribute

depth_sd

description

String

standard deviation of depth

attribute

depth_sd

long_name

String

Depth

attribute

depth_sd

standard_name

String

depth

attribute

depth_sd

units

String

meters

variable

depth_sd_flag

byte

attribute

depth_sd_flag

_FillValue

byte

127

attribute

depth_sd_flag

actual_range

byte

0, 1

attribute

depth_sd_flag

bcodmo_name

String

flag

attribute

depth_sd_flag

colorBarMaximum

double

50.0

attribute

depth_sd_flag

colorBarMinimum

double

0.0

attribute

depth_sd_flag

description

String

measurement quality flag

attribute

depth_sd_flag

long_name

String

Depth

attribute

depth_sd_flag

standard_name

String

depth

attribute

depth_sd_flag

units

String

unitless

variable

depth

double

attribute

depth

_CoordinateAxisType

String

Height

attribute

depth

_CoordinateZisPositive

String

down

attribute

depth

_FillValue

double

NaN

attribute

depth

actual_range

double

748.5, 4889.6

attribute

depth

axis

String

attribute

depth

bcodmo_name

String

depth

attribute

depth

colorBarMaximum

double

8000.0

attribute

depth

colorBarMinimum

double

-8000.0

attribute

depth

colorBarPalette

String

TopographyDepth

attribute

depth

description

String

depth of pump sample as reported in the intermediate US GEOTRACES master file. Observation/sample depth in meters calculated from CTD pressure.

attribute

depth

ioos_category

String

Location

attribute

depth

long_name

String

Depth

attribute

depth

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)

attribute

depth

positive

String

down

attribute

depth

standard_name

String

depth

attribute

depth

units

String

variable

depth_GEOTRC_CTD_round

short

attribute

depth_GEOTRC_CTD_round

_FillValue

short

32767

attribute

depth_GEOTRC_CTD_round

actual_range

short

749, 4890

attribute

depth_GEOTRC_CTD_round

bcodmo_name

String

depth

attribute

depth_GEOTRC_CTD_round

colorBarMaximum

double

8000.0

attribute

depth_GEOTRC_CTD_round

colorBarMinimum

double

-8000.0

attribute

depth_GEOTRC_CTD_round

colorBarPalette

String

TopographyDepth

attribute

depth_GEOTRC_CTD_round

description

String

rounded depth of pump sample to nearest meater. Observation/sample depth in meters calculated from CTD pressure.

attribute

depth_GEOTRC_CTD_round

long_name

String

Depth

attribute

depth_GEOTRC_CTD_round

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)

attribute

depth_GEOTRC_CTD_round

standard_name

String

depth

attribute

depth_GEOTRC_CTD_round

units

String

meters

variable

sample_GEOTRC

short

attribute

sample_GEOTRC

_FillValue

short

32767

attribute

sample_GEOTRC

actual_range

short

5033, 8148

attribute

sample_GEOTRC

bcodmo_name

String

sample

attribute

sample_GEOTRC

description

String

Unique identifying number for US GEOTRACES samples; ranges from 5033 to 6078 for KN199-04 and from 6112 to 8148 for KN204-01. PI-supplied values were identical to those in the intermediate US GEOTRACES master file Originally submitted as 'sample'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.

attribute

sample_GEOTRC

long_name

String

Sample GEOTRC

attribute

sample_GEOTRC

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)

attribute

sample_GEOTRC

units

String

unitless

variable

sample_bottle_GEOTRC

byte

attribute

sample_bottle_GEOTRC

_FillValue

byte

127

attribute

sample_bottle_GEOTRC

actual_range

byte

1, 8

attribute

sample_bottle_GEOTRC

bcodmo_name

String

bottle

attribute

sample_bottle_GEOTRC

description

String

Unique identification numbers given to samples taken from bottles; ranges from 1 to 24; often used synonymously with bottle number. Values were added from the intermediate US GEOTRACES master file (see Processing Description).

attribute

sample_bottle_GEOTRC

long_name

String

Sample Bottle GEOTRC

attribute

sample_bottle_GEOTRC

units

String

integer

variable

bottle_GEOTRC

String

attribute

bottle_GEOTRC

bcodmo_name

String

bottle

attribute

bottle_GEOTRC

description

String

Alphanumeric characters identifying bottle type (e.g.; NIS representing Niskin and GF representing GOFLO) and position on a CTD rosette. Values were added from the intermediate US GEOTRACES master file (see Processing Description).

attribute

bottle_GEOTRC

long_name

String

Bottle GEOTRC

attribute

bottle_GEOTRC

units

String

unitless

variable

sample_GEOTRC_flag

byte

attribute

sample_GEOTRC_flag

_FillValue

byte

127

attribute

sample_GEOTRC_flag

actual_range

byte

0, 1

attribute

sample_GEOTRC_flag

bcodmo_name

String

flag

attribute

sample_GEOTRC_flag

colorBarMaximum

double

150.0

attribute

sample_GEOTRC_flag

colorBarMinimum

double

0.0

attribute

sample_GEOTRC_flag

description

String

measurement quality flag

attribute

sample_GEOTRC_flag

long_name

String

Sample GEOTRC Flag

attribute

sample_GEOTRC_flag

units

String

unitless

variable

BTL_ISO_DateTime_UTC

String

attribute

BTL_ISO_DateTime_UTC

bcodmo_name

String

ISO_DateTime_UTC

attribute

BTL_ISO_DateTime_UTC

description

String

Date and time of bottle sample; UTC; ISO formatL yyyy-mm-ddTHH:MM:SS.ssZ

attribute

BTL_ISO_DateTime_UTC

long_name

String

BTL ISO Date Time UTC

attribute

BTL_ISO_DateTime_UTC

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)

attribute

BTL_ISO_DateTime_UTC

units

String

unitless

variable

time

double

attribute

time

_CoordinateAxisType

String

Time

attribute

time

actual_range

double

1.28728302E9, 1.32347478E9

attribute

time

axis

String

attribute

time

bcodmo_name

String

ISO_DateTime_UTC

attribute

time

description

String

date and time of the midpoint of pumping of the shallow pump cast of the station. Note that both shallow and deep pump casts were assigned the same date and time stamp to facilitate station recognition in ODV

attribute

time

ioos_category

String

Time

attribute

time

long_name

String

ISO Date Time UTC

attribute

time

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)

attribute

time

source_name

String

ISO_DateTime_UTC

attribute

time

standard_name

String

time

attribute

time

time_origin

String

01-JAN-1970 00:00:00

attribute

time

time_precision

String

1970-01-01T00:00Z

attribute

time

units

String

seconds since 1970-01-01T00:00:00Z

variable

pump

byte

attribute

pump

_FillValue

byte

127

attribute

pump

actual_range

byte

1, 9

attribute

pump

bcodmo_name

String

unknown

attribute

pump

description

String

McLane in-situ pump identifier

attribute

pump

long_name

String

Pump

attribute

pump

units

String

unitless

variable

pump_flag

byte

attribute

pump_flag

_FillValue

byte

127

attribute

pump_flag

actual_range

byte

0, 0

attribute

pump_flag

bcodmo_name

String

flag

attribute

pump_flag

colorBarMaximum

double

150.0

attribute

pump_flag

colorBarMinimum

double

0.0

attribute

pump_flag

description

String

measurement quality flag

attribute

pump_flag

long_name

String

Pump Flag

attribute

pump_flag

units

String

unitless

variable

vol_QMA

float

attribute

vol_QMA

_FillValue

float

NaN

attribute

vol_QMA

actual_range

float

0.3, 1927.9

attribute

vol_QMA

bcodmo_name

String

vol_filt

attribute

vol_QMA

description

String

volume pumped through the filter holder containing paired QMA filters

attribute

vol_QMA

long_name

String

Vol QMA

attribute

vol_QMA

units

String

liters

variable

vol_QMA_flag

byte

attribute

vol_QMA_flag

_FillValue

byte

127

attribute

vol_QMA_flag

actual_range

byte

0, 0

attribute

vol_QMA_flag

bcodmo_name

String

flag

attribute

vol_QMA_flag

colorBarMaximum

double

150.0

attribute

vol_QMA_flag

colorBarMinimum

double

0.0

attribute

vol_QMA_flag

description

String

measurement quality flag

attribute

vol_QMA_flag

long_name

String

Vol QMA Flag

attribute

vol_QMA_flag

units

String

unitless

variable

vol_Supor

float

attribute

vol_Supor

_FillValue

float

NaN

attribute

vol_Supor

actual_range

float

0.0, 838.4

attribute

vol_Supor

bcodmo_name

String

vol_filt

attribute

vol_Supor

description

String

volume pumped through the filter holder containing paired Supor filters

attribute

vol_Supor

long_name

String

Vol Supor

attribute

vol_Supor

units

String

liters

variable

vol_Supor_flag

byte

attribute

vol_Supor_flag

_FillValue

byte

127

attribute

vol_Supor_flag

actual_range

byte

0, 1

attribute

vol_Supor_flag

bcodmo_name

String

flag

attribute

vol_Supor_flag

colorBarMaximum

double

150.0

attribute

vol_Supor_flag

colorBarMinimum

double

0.0

attribute

vol_Supor_flag

description

String

measurement quality flag

attribute

vol_Supor_flag

long_name

String

Vol Supor Flag

attribute

vol_Supor_flag

units

String

unitless

variable

opal_sink

float

attribute

opal_sink

_FillValue

float

NaN

attribute

opal_sink

actual_range

float

0.0, 12.645

attribute

opal_sink

bcodmo_name

String

trace_metal_conc

attribute

opal_sink

description

String

amorphous/biogenic silica from the sinking size fraction (>51 um)

attribute

opal_sink

long_name

String

Opal Sink

attribute

opal_sink

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

opal_sink

units

String

micrograms/liter

variable

opal_sink_flag

byte

attribute

opal_sink_flag

_FillValue

byte

127

attribute

opal_sink_flag

actual_range

byte

1, 4

attribute

opal_sink_flag

bcodmo_name

String

flag

attribute

opal_sink_flag

colorBarMaximum

double

150.0

attribute

opal_sink_flag

colorBarMinimum

double

0.0

attribute

opal_sink_flag

description

String

measurement quality flag

attribute

opal_sink_flag

long_name

String

Opal Sink Flag

attribute

opal_sink_flag

units

String

integer

variable

opal_sink_sd

float

attribute

opal_sink_sd

_FillValue

float

NaN

attribute

opal_sink_sd

actual_range

float

7.0E-4, 0.0395

attribute

opal_sink_sd

bcodmo_name

String

trace_metal_sd

attribute

opal_sink_sd

colorBarMaximum

double

50.0

attribute

opal_sink_sd

colorBarMinimum

double

0.0

attribute

opal_sink_sd

description

String

error reported as the 1-sigma variation for amorphous/biogenic silica from the sinking size fraction (>51 um)

attribute

opal_sink_sd

long_name

String

Opal Sink Sd

attribute

opal_sink_sd

units

String

micrograms/liter

variable

opal_sink_sd_flag

byte

attribute

opal_sink_sd_flag

_FillValue

byte

127

attribute

opal_sink_sd_flag

actual_range

byte

0, 4

attribute

opal_sink_sd_flag

bcodmo_name

String

flag

attribute

opal_sink_sd_flag

colorBarMaximum

double

50.0

attribute

opal_sink_sd_flag

colorBarMinimum

double

0.0

attribute

opal_sink_sd_flag

description

String

measurement quality flag

attribute

opal_sink_sd_flag

long_name

String

Opal Sink Sd Flag

attribute

opal_sink_sd_flag

units

String

integer

variable

opal_susp

float

attribute

opal_susp

_FillValue

float

NaN

attribute

opal_susp

actual_range

float

0.0, 28.3896

attribute

opal_susp

bcodmo_name

String

trace_metal_conc

attribute

opal_susp

description

String

amorphous/biogenic silica from the suspended size fraction (

attribute

opal_susp

long_name

String

Opal Susp

attribute

opal_susp

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

opal_susp

units

String

micrograms/liter

variable

opal_susp_flag

byte

attribute

opal_susp_flag

_FillValue

byte

127

attribute

opal_susp_flag

actual_range

byte

1, 4

attribute

opal_susp_flag

bcodmo_name

String

flag

attribute

opal_susp_flag

colorBarMaximum

double

150.0

attribute

opal_susp_flag

colorBarMinimum

double

0.0

attribute

opal_susp_flag

description

String

measurement quality flag

attribute

opal_susp_flag

long_name

String

Opal Susp Flag

attribute

opal_susp_flag

units

String

integer

variable

opal_susp_sd

float

attribute

opal_susp_sd

_FillValue

float

NaN

attribute

opal_susp_sd

actual_range

float

0.006, 0.0249

attribute

opal_susp_sd

bcodmo_name

String

trace_metal_sd

attribute

opal_susp_sd

colorBarMaximum

double

50.0

attribute

opal_susp_sd

colorBarMinimum

double

0.0

attribute

opal_susp_sd

description

String

error reported as the 1-sigma variation amorphous/biogenic silica from the suspended size fraction (

attribute

opal_susp_sd

long_name

String

Opal Susp Sd

attribute

opal_susp_sd

units

String

micrograms/liter

variable

opal_susp_sd_flag

byte

attribute

opal_susp_sd_flag

_FillValue

byte

127

attribute

opal_susp_sd_flag

actual_range

byte

0, 4

attribute

opal_susp_sd_flag

bcodmo_name

String

flag

attribute

opal_susp_sd_flag

colorBarMaximum

double

50.0

attribute

opal_susp_sd_flag

colorBarMinimum

double

0.0

attribute

opal_susp_sd_flag

description

String

measurement quality flag

attribute

opal_susp_sd_flag

long_name

String

Opal Susp Sd Flag

attribute

opal_susp_sd_flag

units

String

integer

variable

TPC_sink

float

attribute

TPC_sink

_FillValue

float

NaN

attribute

TPC_sink

actual_range

float

0.006, 27.226

attribute

TPC_sink

bcodmo_name

String

unknown

attribute

TPC_sink

description

String

total particulate carbon from the sinking size fraction (>51 um)

attribute

TPC_sink

long_name

String

TPC Sink

attribute

TPC_sink

units

String

micrograms/liter

variable

TPC_sink_flag

byte

attribute

TPC_sink_flag

_FillValue

byte

127

attribute

TPC_sink_flag

actual_range

byte

1, 8

attribute

TPC_sink_flag

bcodmo_name

String

flag

attribute

TPC_sink_flag

colorBarMaximum

double

150.0

attribute

TPC_sink_flag

colorBarMinimum

double

0.0

attribute

TPC_sink_flag

description

String

measurement quality flag

attribute

TPC_sink_flag

long_name

String

TPC Sink Flag

attribute

TPC_sink_flag

units

String

integer

variable

TPC_sink_sd

float

attribute

TPC_sink_sd

_FillValue

float

NaN

attribute

TPC_sink_sd

actual_range

float

0.006, 0.029

attribute

TPC_sink_sd

bcodmo_name

String

unknown

attribute

TPC_sink_sd

colorBarMaximum

double

50.0

attribute

TPC_sink_sd

colorBarMinimum

double

0.0

attribute

TPC_sink_sd

description

String

error reported as the 1-sigma variation for total particulate carbon from the sinking size fraction (>51um)

attribute

TPC_sink_sd

long_name

String

TPC Sink Sd

attribute

TPC_sink_sd

units

String

micrograms/liter

variable

TPC_sink_sd_flag

byte

attribute

TPC_sink_sd_flag

_FillValue

byte

127

attribute

TPC_sink_sd_flag

actual_range

byte

0, 1

attribute

TPC_sink_sd_flag

bcodmo_name

String

flag

attribute

TPC_sink_sd_flag

colorBarMaximum

double

50.0

attribute

TPC_sink_sd_flag

colorBarMinimum

double

0.0

attribute

TPC_sink_sd_flag

description

String

measurement quality flag

attribute

TPC_sink_sd_flag

long_name

String

TPC Sink Sd Flag

attribute

TPC_sink_sd_flag

units

String

integer

variable

TPC_susp

float

attribute

TPC_susp

_FillValue

float

NaN

attribute

TPC_susp

actual_range

float

0.27, 45.147

attribute

TPC_susp

bcodmo_name

String

unknown

attribute

TPC_susp

description

String

total particulate carbon from the suspended size fraction (

attribute

TPC_susp

long_name

String

TPC Susp

attribute

TPC_susp

units

String

micrograms/liter

variable

TPC_susp_flag

byte

attribute

TPC_susp_flag

_FillValue

byte

127

attribute

TPC_susp_flag

actual_range

byte

1, 4

attribute

TPC_susp_flag

bcodmo_name

String

flag

attribute

TPC_susp_flag

colorBarMaximum

double

150.0

attribute

TPC_susp_flag

colorBarMinimum

double

0.0

attribute

TPC_susp_flag

description

String

measurement quality flag

attribute

TPC_susp_flag

long_name

String

TPC Susp Flag

attribute

TPC_susp_flag

units

String

integer

variable

TPC_susp_sd

float

attribute

TPC_susp_sd

_FillValue

float

NaN

attribute

TPC_susp_sd

actual_range

float

0.065, 0.38

attribute

TPC_susp_sd

bcodmo_name

String

unknown

attribute

TPC_susp_sd

colorBarMaximum

double

50.0

attribute

TPC_susp_sd

colorBarMinimum

double

0.0

attribute

TPC_susp_sd

description

String

error reported as the 1-sigma variation for total particulate carbon from the suspended size fraction (

attribute

TPC_susp_sd

long_name

String

TPC Susp Sd

attribute

TPC_susp_sd

units

String

micrograms/liter

variable

TPC_susp_sd_flag

byte

attribute

TPC_susp_sd_flag

_FillValue

byte

127

attribute

TPC_susp_sd_flag

actual_range

byte

0, 1

attribute

TPC_susp_sd_flag

bcodmo_name

String

flag

attribute

TPC_susp_sd_flag

colorBarMaximum

double

50.0

attribute

TPC_susp_sd_flag

colorBarMinimum

double

0.0

attribute

TPC_susp_sd_flag

description

String

measurement quality flag

attribute

TPC_susp_sd_flag

long_name

String

TPC Susp Sd Flag

attribute

TPC_susp_sd_flag

units

String

integer

variable

PIC_sink

float

attribute

PIC_sink

_FillValue

float

NaN

attribute

PIC_sink

actual_range

float

0.0, 1.9004

attribute

PIC_sink

bcodmo_name

String

PIC

attribute

PIC_sink

description

String

particulate inorganic carbon from the sinking size fraction (>51 um)

attribute

PIC_sink

long_name

String

PIC Sink

attribute

PIC_sink

units

String

micrograms/liter

variable

PIC_sink_flag

byte

attribute

PIC_sink_flag

_FillValue

byte

127

attribute

PIC_sink_flag

actual_range

byte

1, 4

attribute

PIC_sink_flag

bcodmo_name

String

flag

attribute

PIC_sink_flag

colorBarMaximum

double

150.0

attribute

PIC_sink_flag

colorBarMinimum

double

0.0

attribute

PIC_sink_flag

description

String

measurement quality flag

attribute

PIC_sink_flag

long_name

String

PIC Sink Flag

attribute

PIC_sink_flag

units

String

integer

variable

PIC_sink_sd

float

attribute

PIC_sink_sd

_FillValue

float

NaN

attribute

PIC_sink_sd

actual_range

float

0.0, 6.052

attribute

PIC_sink_sd

bcodmo_name

String

unknown

attribute

PIC_sink_sd

colorBarMaximum

double

50.0

attribute

PIC_sink_sd

colorBarMinimum

double

0.0

attribute

PIC_sink_sd

description

String

particulate inorganic carbon from the sinking size fraction (>51 um) - 1-sigma variation

attribute

PIC_sink_sd

long_name

String

PIC Sink Sd

attribute

PIC_sink_sd

units

String

micrograms/liter

variable

PIC_sink_sd_flag

byte

attribute

PIC_sink_sd_flag

_FillValue

byte

127

attribute

PIC_sink_sd_flag

actual_range

byte

0, 4

attribute

PIC_sink_sd_flag

bcodmo_name

String

flag

attribute

PIC_sink_sd_flag

colorBarMaximum

double

50.0

attribute

PIC_sink_sd_flag

colorBarMinimum

double

0.0

attribute

PIC_sink_sd_flag

description

String

measurement quality flag

attribute

PIC_sink_sd_flag

long_name

String

PIC Sink Sd Flag

attribute

PIC_sink_sd_flag

units

String

integer

variable

PIC_susp_sd

float

attribute

PIC_susp_sd

_FillValue

float

NaN

attribute

PIC_susp_sd

actual_range

float

2.0E-4, 0.4539

attribute

PIC_susp_sd

bcodmo_name

String

unknown

attribute

PIC_susp_sd

colorBarMaximum

double

50.0

attribute

PIC_susp_sd

colorBarMinimum

double

0.0

attribute

PIC_susp_sd

description

String

particulate inorganic carbon from the suspended size fraction (

attribute

PIC_susp_sd

long_name

String

PIC Susp Sd

attribute

PIC_susp_sd

units

String

micrograms/liter

variable

PIC_susp_sd_flag

byte

attribute

PIC_susp_sd_flag

_FillValue

byte

127

attribute

PIC_susp_sd_flag

actual_range

byte

0, 4

attribute

PIC_susp_sd_flag

bcodmo_name

String

flag

attribute

PIC_susp_sd_flag

colorBarMaximum

double

50.0

attribute

PIC_susp_sd_flag

colorBarMinimum

double

0.0

attribute

PIC_susp_sd_flag

description

String

measurement quality flag

attribute

PIC_susp_sd_flag

long_name

String

PIC Susp Sd Flag

attribute

PIC_susp_sd_flag

units

String

integer

variable

PIC_susp

float

attribute

PIC_susp

_FillValue

float

NaN

attribute

PIC_susp

actual_range

float

0.0, 36.4586

attribute

PIC_susp

bcodmo_name

String

PIC

attribute

PIC_susp

description

String

particulate inorganic carbon from the suspended size fraction (

attribute

PIC_susp

long_name

String

PIC Susp

attribute

PIC_susp

units

String

micrograms/liter

variable

PIC_susp_flag

byte

attribute

PIC_susp_flag

_FillValue

byte

127

attribute

PIC_susp_flag

actual_range

byte

1, 8

attribute

PIC_susp_flag

bcodmo_name

String

flag

attribute

PIC_susp_flag

colorBarMaximum

double

150.0

attribute

PIC_susp_flag

colorBarMinimum

double

0.0

attribute

PIC_susp_flag

description

String

measurement quality flag

attribute

PIC_susp_flag

long_name

String

PIC Susp Flag

attribute

PIC_susp_flag

units

String

integer

variable

POC_sink

float

attribute

POC_sink

_FillValue

float

NaN

attribute

POC_sink

actual_range

float

0.0, 26.3777

attribute

POC_sink

bcodmo_name

String

POC

attribute

POC_sink

description

String

particulate organic carbon from the sinking size fraction (>51 um)

attribute

POC_sink

long_name

String

POC Sink

attribute

POC_sink

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/ (external link)

attribute

POC_sink

units

String

micrograms/liter

variable

POC_sink_flag

byte

attribute

POC_sink_flag

_FillValue

byte

127

attribute

POC_sink_flag

actual_range

byte

1, 8

attribute

POC_sink_flag

bcodmo_name

String

flag

attribute

POC_sink_flag

colorBarMaximum

double

150.0

attribute

POC_sink_flag

colorBarMinimum

double

0.0

attribute

POC_sink_flag

description

String

measurement quality flag

attribute

POC_sink_flag

long_name

String

POC Sink Flag

attribute

POC_sink_flag

units

String

integer

variable

POC_sink_sd

float

attribute

POC_sink_sd

_FillValue

float

NaN

attribute

POC_sink_sd

actual_range

float

3.0E-4, 6.052

attribute

POC_sink_sd

bcodmo_name

String

unknown

attribute

POC_sink_sd

colorBarMaximum

double

50.0

attribute

POC_sink_sd

colorBarMinimum

double

0.0

attribute

POC_sink_sd

description

String

error reported as the 1-sigma variation for particulate organic carbon from the sinking size fraction (>51um)

attribute

POC_sink_sd

long_name

String

POC Sink Sd

attribute

POC_sink_sd

units

String

micrograms/liter

variable

POC_sink_sd_flag

byte

attribute

POC_sink_sd_flag

_FillValue

byte

127

attribute

POC_sink_sd_flag

actual_range

byte

0, 4

attribute

POC_sink_sd_flag

bcodmo_name

String

flag

attribute

POC_sink_sd_flag

colorBarMaximum

double

50.0

attribute

POC_sink_sd_flag

colorBarMinimum

double

0.0

attribute

POC_sink_sd_flag

description

String

measurement quality flag

attribute

POC_sink_sd_flag

long_name

String

POC Sink Sd Flag

attribute

POC_sink_sd_flag

units

String

integer

variable

POC_susp

double

attribute

POC_susp

_FillValue

double

NaN

attribute

POC_susp

actual_range

double

0.1441, 31.198799

attribute

POC_susp

bcodmo_name

String

POC

attribute

POC_susp

description

String

particulate organic carbon (POC = TPC - PIC) from the suspended size fraction (

attribute

POC_susp

long_name

String

POC Susp

attribute

POC_susp

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/ (external link)

attribute

POC_susp

units

String

micrograms/liter

variable

POC_susp_flag

byte

attribute

POC_susp_flag

_FillValue

byte

127

attribute

POC_susp_flag

actual_range

byte

1, 4

attribute

POC_susp_flag

bcodmo_name

String

flag

attribute

POC_susp_flag

colorBarMaximum

double

150.0

attribute

POC_susp_flag

colorBarMinimum

double

0.0

attribute

POC_susp_flag

description

String

measurement quality flag

attribute

POC_susp_flag

long_name

String

POC Susp Flag

attribute

POC_susp_flag

units

String

integer

variable

POC_susp_sd

double

attribute

POC_susp_sd

_FillValue

double

NaN

attribute

POC_susp_sd

actual_range

double

0.104251, 36.460579

attribute

POC_susp_sd

bcodmo_name

String

unknown

attribute

POC_susp_sd

colorBarMaximum

double

50.0

attribute

POC_susp_sd

colorBarMinimum

double

0.0

attribute

POC_susp_sd

description

String

error reported as the 1-sigma variation for particulate organic carbon (POC = TPC - PIC) from the suspended size fraction (

attribute

POC_susp_sd

long_name

String

POC Susp Sd

attribute

POC_susp_sd

units

String

micrograms/liter

variable

POC_susp_sd_flag

byte

attribute

POC_susp_sd_flag

_FillValue

byte

127

attribute

POC_susp_sd_flag

actual_range

byte

0, 4

attribute

POC_susp_sd_flag

bcodmo_name

String

flag

attribute

POC_susp_sd_flag

colorBarMaximum

double

50.0

attribute

POC_susp_sd_flag

colorBarMinimum

double

0.0

attribute

POC_susp_sd_flag

description

String

measurement quality flag

attribute

POC_susp_sd_flag

long_name

String

POC Susp Sd Flag

attribute

POC_susp_sd_flag

units

String

integer

variable

POM_sink

float

attribute

POM_sink

_FillValue

float

NaN

attribute

POM_sink

actual_range

float

0.0, 49.5901

attribute

POM_sink

bcodmo_name

String

unknown

attribute

POM_sink

description

String

particulate organic matter from the sinking size fraction (>51 um)

attribute

POM_sink

long_name

String

POM Sink

attribute

POM_sink

units

String

micrograms/liter

variable

POM_sink_flag

byte

attribute

POM_sink_flag

_FillValue

byte

127

attribute

POM_sink_flag

actual_range

byte

1, 8

attribute

POM_sink_flag

bcodmo_name

String

flag

attribute

POM_sink_flag

colorBarMaximum

double

150.0

attribute

POM_sink_flag

colorBarMinimum

double

0.0

attribute

POM_sink_flag

description

String

measurement quality flag

attribute

POM_sink_flag

long_name

String

POM Sink Flag

attribute

POM_sink_flag

units

String

integer

variable

POM_susp

float

attribute

POM_susp

_FillValue

float

NaN

attribute

POM_susp

actual_range

float

0.271, 58.654

attribute

POM_susp

bcodmo_name

String

unknown

attribute

POM_susp

description

String

particulate organic matter from the suspended size fraction (

attribute

POM_susp

long_name

String

POM Susp

attribute

POM_susp

units

String

micrograms/liter

variable

POM_susp_flag

byte

attribute

POM_susp_flag

_FillValue

byte

127

attribute

POM_susp_flag

actual_range

byte

1, 4

attribute

POM_susp_flag

bcodmo_name

String

flag

attribute

POM_susp_flag

colorBarMaximum

double

150.0

attribute

POM_susp_flag

colorBarMinimum

double

0.0

attribute

POM_susp_flag

description

String

measurement quality flag

attribute

POM_susp_flag

long_name

String

POM Susp Flag

attribute

POM_susp_flag

units

String

integer

variable

CaCO3_sink

float

attribute

CaCO3_sink

_FillValue

float

NaN

attribute

CaCO3_sink

actual_range

float

0.0, 15.8493

attribute

CaCO3_sink

bcodmo_name

String

unknown

attribute

CaCO3_sink

description

String

calcium carbonate from the sinking size fraction (>51 um): (CaCO3 = PIC * 100.08 g CaCO3/ 12 g PIC)

attribute

CaCO3_sink

long_name

String

Ca CO3 Sink

attribute

CaCO3_sink

units

String

micrograms/liter

variable

CaCO3_sink_flag

byte

attribute

CaCO3_sink_flag

_FillValue

byte

127

attribute

CaCO3_sink_flag

actual_range

byte

1, 4

attribute

CaCO3_sink_flag

bcodmo_name

String

flag

attribute

CaCO3_sink_flag

colorBarMaximum

double

150.0

attribute

CaCO3_sink_flag

colorBarMinimum

double

0.0

attribute

CaCO3_sink_flag

description

String

measurement quality flag

attribute

CaCO3_sink_flag

long_name

String

Ca CO3 Sink Flag

attribute

CaCO3_sink_flag

units

String

integer

variable

CaCO3_susp

float

attribute

CaCO3_susp

_FillValue

float

NaN

attribute

CaCO3_susp

actual_range

float

0.0, 304.0647

attribute

CaCO3_susp

bcodmo_name

String

unknown

attribute

CaCO3_susp

description

String

calcium carbonate from the suspended size fraction (

attribute

CaCO3_susp

long_name

String

Ca CO3 Susp

attribute

CaCO3_susp

units

String

micrograms/liter

variable

CaCO3_susp_flag

byte

attribute

CaCO3_susp_flag

_FillValue

byte

127

attribute

CaCO3_susp_flag

actual_range

byte

1, 8

attribute

CaCO3_susp_flag

bcodmo_name

String

flag

attribute

CaCO3_susp_flag

colorBarMaximum

double

150.0

attribute

CaCO3_susp_flag

colorBarMinimum

double

0.0

attribute

CaCO3_susp_flag

description

String

measurement quality flag

attribute

CaCO3_susp_flag

long_name

String

Ca CO3 Susp Flag

attribute

CaCO3_susp_flag

units

String

integer

variable

Litho_AlUCC_sink

float

attribute

Litho_AlUCC_sink

_FillValue

float

NaN

attribute

Litho_AlUCC_sink

actual_range

float

0.03627, 47.35075

attribute

Litho_AlUCC_sink

bcodmo_name

String

trace_metal_conc

attribute

Litho_AlUCC_sink

description

String

alternative lithogenic material for the sinking size fraction (>51um) from Al concentrations and using a UCC Al composition (litho = Al [nM] * 27 g/mol / 0.0804 g Al/g UCC/ 1000 ng/ug)

attribute

Litho_AlUCC_sink

long_name

String

Litho Al UCC Sink

attribute

Litho_AlUCC_sink

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

Litho_AlUCC_sink

units

String

micrograms/liter

variable

Litho_AlUCC_sink_flag

byte

attribute

Litho_AlUCC_sink_flag

_FillValue

byte

127

attribute

Litho_AlUCC_sink_flag

actual_range

byte

1, 4

attribute

Litho_AlUCC_sink_flag

bcodmo_name

String

flag

attribute

Litho_AlUCC_sink_flag

colorBarMaximum

double

150.0

attribute

Litho_AlUCC_sink_flag

colorBarMinimum

double

0.0

attribute

Litho_AlUCC_sink_flag

description

String

measurement quality flag

attribute

Litho_AlUCC_sink_flag

long_name

String

Litho Al UCC Sink Flag

attribute

Litho_AlUCC_sink_flag

units

String

integer

variable

Litho_AlUCC_sink_sd

double

attribute

Litho_AlUCC_sink_sd

_FillValue

double

NaN

attribute

Litho_AlUCC_sink_sd

actual_range

double

0.006694553, 7.078391002

attribute

Litho_AlUCC_sink_sd

bcodmo_name

String

trace_metal_sd

attribute

Litho_AlUCC_sink_sd

colorBarMaximum

double

50.0

attribute

Litho_AlUCC_sink_sd

colorBarMinimum

double

0.0

attribute

Litho_AlUCC_sink_sd

description

String

error reported as the 1-sigma variation for Litho_AlUCC  from the sinking size fraction (>51 um)

attribute

Litho_AlUCC_sink_sd

long_name

String

Litho Al UCC Sink Sd

attribute

Litho_AlUCC_sink_sd

units

String

micrograms/liter

variable

Litho_AlUCC_sink_sd_flag

byte

attribute

Litho_AlUCC_sink_sd_flag

_FillValue

byte

127

attribute

Litho_AlUCC_sink_sd_flag

actual_range

byte

1, 1

attribute

Litho_AlUCC_sink_sd_flag

bcodmo_name

String

flag

attribute

Litho_AlUCC_sink_sd_flag

colorBarMaximum

double

50.0

attribute

Litho_AlUCC_sink_sd_flag

colorBarMinimum

double

0.0

attribute

Litho_AlUCC_sink_sd_flag

description

String

measurement quality flag

attribute

Litho_AlUCC_sink_sd_flag

long_name

String

Litho Al UCC Sink Sd Flag

attribute

Litho_AlUCC_sink_sd_flag

units

String

unitless

variable

Litho_AlUCC_susp

double

attribute

Litho_AlUCC_susp

_FillValue

double

NaN

attribute

Litho_AlUCC_susp

actual_range

double

0.05104, 1229.10448

attribute

Litho_AlUCC_susp

bcodmo_name

String

trace_metal_conc

attribute

Litho_AlUCC_susp

description

String

alternative lithogenic material for the suspended size fraction (

attribute

Litho_AlUCC_susp

long_name

String

Litho Al UCC Susp

attribute

Litho_AlUCC_susp

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

Litho_AlUCC_susp

units

String

micrograms/liter

variable

Litho_AlUCC_susp_flag

byte

attribute

Litho_AlUCC_susp_flag

_FillValue

byte

127

attribute

Litho_AlUCC_susp_flag

actual_range

byte

0, 4

attribute

Litho_AlUCC_susp_flag

bcodmo_name

String

flag

attribute

Litho_AlUCC_susp_flag

colorBarMaximum

double

150.0

attribute

Litho_AlUCC_susp_flag

colorBarMinimum

double

0.0

attribute

Litho_AlUCC_susp_flag

description

String

measurement quality flag

attribute

Litho_AlUCC_susp_flag

long_name

String

Litho Al UCC Susp Flag

attribute

Litho_AlUCC_susp_flag

units

String

integer

variable

Litho_AlUCC_susp_sd

double

attribute

Litho_AlUCC_susp_sd

_FillValue

double

NaN

attribute

Litho_AlUCC_susp_sd

actual_range

double

0.018926133, 178.119791

attribute

Litho_AlUCC_susp_sd

bcodmo_name

String

trace_metal_sd

attribute

Litho_AlUCC_susp_sd

colorBarMaximum

double

50.0

attribute

Litho_AlUCC_susp_sd

colorBarMinimum

double

0.0

attribute

Litho_AlUCC_susp_sd

description

String

error reported as the 1-sigma variation for suspended Litho_AlUCC

attribute

Litho_AlUCC_susp_sd

long_name

String

Litho Al UCC Susp Sd

attribute

Litho_AlUCC_susp_sd

units

String

micrograms/liter

variable

Litho_AlUCC_susp_sd_flag

byte

attribute

Litho_AlUCC_susp_sd_flag

_FillValue

byte

127

attribute

Litho_AlUCC_susp_sd_flag

actual_range

byte

1, 1

attribute

Litho_AlUCC_susp_sd_flag

bcodmo_name

String

flag

attribute

Litho_AlUCC_susp_sd_flag

colorBarMaximum

double

50.0

attribute

Litho_AlUCC_susp_sd_flag

colorBarMinimum

double

0.0

attribute

Litho_AlUCC_susp_sd_flag

description

String

measurement quality flag

attribute

Litho_AlUCC_susp_sd_flag

long_name

String

Litho Al UCC Susp Sd Flag

attribute

Litho_AlUCC_susp_sd_flag

units

String

unitless

variable

Litho_TiDust_sink

float

attribute

Litho_TiDust_sink

_FillValue

float

NaN

attribute

Litho_TiDust_sink

actual_range

float

0.0281, 41.9125

attribute

Litho_TiDust_sink

bcodmo_name

String

trace_metal_conc

attribute

Litho_TiDust_sink

description

String

lithogenic material from Ti concentrations and using a dust Ti composition - from the sinking size fraction (>51 um)

attribute

Litho_TiDust_sink

long_name

String

Litho Ti Dust Sink

attribute

Litho_TiDust_sink

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

Litho_TiDust_sink

units

String

micrograms/liter

variable

Litho_TiDust_sink_flag

byte

attribute

Litho_TiDust_sink_flag

_FillValue

byte

127

attribute

Litho_TiDust_sink_flag

actual_range

byte

1, 1

attribute

Litho_TiDust_sink_flag

bcodmo_name

String

flag

attribute

Litho_TiDust_sink_flag

colorBarMaximum

double

150.0

attribute

Litho_TiDust_sink_flag

colorBarMinimum

double

0.0

attribute

Litho_TiDust_sink_flag

description

String

measurement quality flag

attribute

Litho_TiDust_sink_flag

long_name

String

Litho Ti Dust Sink Flag

attribute

Litho_TiDust_sink_flag

units

String

integer

variable

Litho_TiDust_sink_sd

float

attribute

Litho_TiDust_sink_sd

_FillValue

float

NaN

attribute

Litho_TiDust_sink_sd

actual_range

float

0.004, 3.443

attribute

Litho_TiDust_sink_sd

bcodmo_name

String

trace_metal_sd

attribute

Litho_TiDust_sink_sd

colorBarMaximum

double

50.0

attribute

Litho_TiDust_sink_sd

colorBarMinimum

double

0.0

attribute

Litho_TiDust_sink_sd

description

String

error reported as the 1-sigma variation for lithogenic material from Ti concentrations and using a dust Ti composition from the sinnking size fraction (>51um)

attribute

Litho_TiDust_sink_sd

long_name

String

Litho Ti Dust Sink Sd

attribute

Litho_TiDust_sink_sd

units

String

micrograms/liter

variable

Litho_TiDust_sink_sd_flag

byte

attribute

Litho_TiDust_sink_sd_flag

_FillValue

byte

127

attribute

Litho_TiDust_sink_sd_flag

actual_range

byte

0, 1

attribute

Litho_TiDust_sink_sd_flag

bcodmo_name

String

flag

attribute

Litho_TiDust_sink_sd_flag

colorBarMaximum

double

50.0

attribute

Litho_TiDust_sink_sd_flag

colorBarMinimum

double

0.0

attribute

Litho_TiDust_sink_sd_flag

description

String

measurement quality flag

attribute

Litho_TiDust_sink_sd_flag

long_name

String

Litho Ti Dust Sink Sd Flag

attribute

Litho_TiDust_sink_sd_flag

units

String

integer

variable

Litho_TiDust_susp

float

attribute

Litho_TiDust_susp

_FillValue

float

NaN

attribute

Litho_TiDust_susp

actual_range

float

0.077, 846.2333

attribute

Litho_TiDust_susp

bcodmo_name

String

trace_metal_conc

attribute

Litho_TiDust_susp

description

String

lithogenic material from Ti concentrations and using a dust Ti composition from the suspended size fraction (

attribute

Litho_TiDust_susp

long_name

String

Litho Ti Dust Susp

attribute

Litho_TiDust_susp

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

Litho_TiDust_susp

units

String

micrograms/liter

variable

Litho_TiDust_susp_flag

byte

attribute

Litho_TiDust_susp_flag

_FillValue

byte

127

attribute

Litho_TiDust_susp_flag

actual_range

byte

0, 4

attribute

Litho_TiDust_susp_flag

bcodmo_name

String

flag

attribute

Litho_TiDust_susp_flag

colorBarMaximum

double

150.0

attribute

Litho_TiDust_susp_flag

colorBarMinimum

double

0.0

attribute

Litho_TiDust_susp_flag

description

String

measurement quality flag

attribute

Litho_TiDust_susp_flag

long_name

String

Litho Ti Dust Susp Flag

attribute

Litho_TiDust_susp_flag

units

String

integer

variable

Litho_TiDust_susp_sd

float

attribute

Litho_TiDust_susp_sd

_FillValue

float

NaN

attribute

Litho_TiDust_susp_sd

actual_range

float

0.009, 33.971

attribute

Litho_TiDust_susp_sd

bcodmo_name

String

trace_metal_sd

attribute

Litho_TiDust_susp_sd

colorBarMaximum

double

50.0

attribute

Litho_TiDust_susp_sd

colorBarMinimum

double

0.0

attribute

Litho_TiDust_susp_sd

description

String

error reported as the 1-sigma variation for lithogenic material from Ti concentrations and using a dust Ti composition from the suspended size fraction (

attribute

Litho_TiDust_susp_sd

long_name

String

Litho Ti Dust Susp Sd

attribute

Litho_TiDust_susp_sd

units

String

micrograms/liter

variable

Litho_TiDust_susp_sd_flag

byte

attribute

Litho_TiDust_susp_sd_flag

_FillValue

byte

127

attribute

Litho_TiDust_susp_sd_flag

actual_range

byte

0, 1

attribute

Litho_TiDust_susp_sd_flag

bcodmo_name

String

flag

attribute

Litho_TiDust_susp_sd_flag

colorBarMaximum

double

50.0

attribute

Litho_TiDust_susp_sd_flag

colorBarMinimum

double

0.0

attribute

Litho_TiDust_susp_sd_flag

description

String

measurement quality flag

attribute

Litho_TiDust_susp_sd_flag

long_name

String

Litho Ti Dust Susp Sd Flag

attribute

Litho_TiDust_susp_sd_flag

units

String

integer

variable

FeOH_3_sink

float

attribute

FeOH_3_sink

_FillValue

float

NaN

attribute

FeOH_3_sink

actual_range

float

0.0, 0.1391

attribute

FeOH_3_sink

bcodmo_name

String

trace_metal_conc

attribute

FeOH_3_sink

description

String

Fe oxyhydroxides from the sinking size fraction (>51 um): (Fe(OH)3=(Fe [nM]-(Ti[nM]*8.736 nmolFe/nmol Ti[sub-dust]))*106.9 ng Fe(OH)3/nmol Fe/1000)

attribute

FeOH_3_sink

long_name

String

Fe OH 3 Sink

attribute

FeOH_3_sink

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

FeOH_3_sink

units

String

micrograms/liter

variable

FeOH_3_sink_flag

byte

attribute

FeOH_3_sink_flag

_FillValue

byte

127

attribute

FeOH_3_sink_flag

actual_range

byte

1, 1

attribute

FeOH_3_sink_flag

bcodmo_name

String

flag

attribute

FeOH_3_sink_flag

colorBarMaximum

double

150.0

attribute

FeOH_3_sink_flag

colorBarMinimum

double

0.0

attribute

FeOH_3_sink_flag

description

String

measurement quality flag

attribute

FeOH_3_sink_flag

long_name

String

Fe OH 3 Sink Flag

attribute

FeOH_3_sink_flag

units

String

integer

variable

FeOH_3_sink_sd

float

attribute

FeOH_3_sink_sd

_FillValue

float

NaN

attribute

FeOH_3_sink_sd

actual_range

float

6.0E-4, 0.4244

attribute

FeOH_3_sink_sd

bcodmo_name

String

trace_metal_sd

attribute

FeOH_3_sink_sd

colorBarMaximum

double

50.0

attribute

FeOH_3_sink_sd

colorBarMinimum

double

0.0

attribute

FeOH_3_sink_sd

description

String

error reported as the 1-sigma variation for iron oxyhydroxides from the sinking size fraction (>51um)

attribute

FeOH_3_sink_sd

long_name

String

Fe OH 3 Sink Sd

attribute

FeOH_3_sink_sd

units

String

micrograms/liter

variable

FeOH_3_sink_sd_flag

byte

attribute

FeOH_3_sink_sd_flag

_FillValue

byte

127

attribute

FeOH_3_sink_sd_flag

actual_range

byte

0, 1

attribute

FeOH_3_sink_sd_flag

bcodmo_name

String

flag

attribute

FeOH_3_sink_sd_flag

colorBarMaximum

double

50.0

attribute

FeOH_3_sink_sd_flag

colorBarMinimum

double

0.0

attribute

FeOH_3_sink_sd_flag

description

String

measurement quality flag

attribute

FeOH_3_sink_sd_flag

long_name

String

Fe OH 3 Sink Sd Flag

attribute

FeOH_3_sink_sd_flag

units

String

integer

variable

FeOH_3_susp

float

attribute

FeOH_3_susp

_FillValue

float

NaN

attribute

FeOH_3_susp

actual_range

float

0.0, 4.89936

attribute

FeOH_3_susp

bcodmo_name

String

trace_metal_conc

attribute

FeOH_3_susp

description

String

iron oxyhydroxides from the suspended size fraction (

attribute

FeOH_3_susp

long_name

String

Fe OH 3 Susp

attribute

FeOH_3_susp

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

FeOH_3_susp

units

String

micrograms/liter

variable

FeOH_3_susp_flag

byte

attribute

FeOH_3_susp_flag

_FillValue

byte

127

attribute

FeOH_3_susp_flag

actual_range

byte

0, 4

attribute

FeOH_3_susp_flag

bcodmo_name

String

flag

attribute

FeOH_3_susp_flag

colorBarMaximum

double

150.0

attribute

FeOH_3_susp_flag

colorBarMinimum

double

0.0

attribute

FeOH_3_susp_flag

description

String

measurement quality flag

attribute

FeOH_3_susp_flag

long_name

String

Fe OH 3 Susp Flag

attribute

FeOH_3_susp_flag

units

String

integer

variable

FeOH_3_susp_sd

float

attribute

FeOH_3_susp_sd

_FillValue

float

NaN

attribute

FeOH_3_susp_sd

actual_range

float

0.0028, 3.5471

attribute

FeOH_3_susp_sd

bcodmo_name

String

trace_metal_sd

attribute

FeOH_3_susp_sd

colorBarMaximum

double

50.0

attribute

FeOH_3_susp_sd

colorBarMinimum

double

0.0

attribute

FeOH_3_susp_sd

description

String

error reported as the 1-sigma variation for iron oxyhydroxides from the suspended size fraction (

attribute

FeOH_3_susp_sd

long_name

String

Fe OH 3 Susp Sd

attribute

FeOH_3_susp_sd

units

String

micrograms/liter

variable

FeOH_3_susp_sd_flag

byte

attribute

FeOH_3_susp_sd_flag

_FillValue

byte

127

attribute

FeOH_3_susp_sd_flag

actual_range

byte

0, 1

attribute

FeOH_3_susp_sd_flag

bcodmo_name

String

flag

attribute

FeOH_3_susp_sd_flag

colorBarMaximum

double

50.0

attribute

FeOH_3_susp_sd_flag

colorBarMinimum

double

0.0

attribute

FeOH_3_susp_sd_flag

description

String

measurement quality flag

attribute

FeOH_3_susp_sd_flag

long_name

String

Fe OH 3 Susp Sd Flag

attribute

FeOH_3_susp_sd_flag

units

String

integer

variable

MnO2_sink

float

attribute

MnO2_sink

_FillValue

float

NaN

attribute

MnO2_sink

actual_range

float

0.0, 0.0795

attribute

MnO2_sink

bcodmo_name

String

trace_metal_conc

attribute

MnO2_sink

description

String

Mn (oxyhydr)oxides from the sinking size fraction (>51 um): (MnO2=(Mn [nM]-(Ti[nM]*0.1268 nmolFe/nmol Ti[sub-dust]))*86.9 ng MnO2/nmol Mn/1000)

attribute

MnO2_sink

long_name

String

Mn O2 Sink

attribute

MnO2_sink

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

MnO2_sink

units

String

micrograms/liter

variable

MnO2_sink_flag

byte

attribute

MnO2_sink_flag

_FillValue

byte

127

attribute

MnO2_sink_flag

actual_range

byte

0, 4

attribute

MnO2_sink_flag

bcodmo_name

String

flag

attribute

MnO2_sink_flag

colorBarMaximum

double

150.0

attribute

MnO2_sink_flag

colorBarMinimum

double

0.0

attribute

MnO2_sink_flag

description

String

measurement quality flag

attribute

MnO2_sink_flag

long_name

String

Mn O2 Sink Flag

attribute

MnO2_sink_flag

units

String

integer

variable

MnO2_sink_sd

float

attribute

MnO2_sink_sd

_FillValue

float

NaN

attribute

MnO2_sink_sd

actual_range

float

0.0, 0.0075

attribute

MnO2_sink_sd

bcodmo_name

String

trace_metal_sd

attribute

MnO2_sink_sd

colorBarMaximum

double

50.0

attribute

MnO2_sink_sd

colorBarMinimum

double

0.0

attribute

MnO2_sink_sd

description

String

error reported as the 1-sigma variation for Mn (oxyhydr)oxides from the sinking size fraction (>51 um)

attribute

MnO2_sink_sd

long_name

String

Mn O2 Sink Sd

attribute

MnO2_sink_sd

units

String

micrograms/liter

variable

MnO2_sink_sd_flag

byte

attribute

MnO2_sink_sd_flag

_FillValue

byte

127

attribute

MnO2_sink_sd_flag

actual_range

byte

0, 1

attribute

MnO2_sink_sd_flag

bcodmo_name

String

flag

attribute

MnO2_sink_sd_flag

colorBarMaximum

double

50.0

attribute

MnO2_sink_sd_flag

colorBarMinimum

double

0.0

attribute

MnO2_sink_sd_flag

description

String

measurement quality flag

attribute

MnO2_sink_sd_flag

long_name

String

Mn O2 Sink Sd Flag

attribute

MnO2_sink_sd_flag

units

String

integer

variable

MnO2_susp

float

attribute

MnO2_susp

_FillValue

float

NaN

attribute

MnO2_susp

actual_range

float

1.0E-4, 2.1342

attribute

MnO2_susp

bcodmo_name

String

trace_metal_conc

attribute

MnO2_susp

description

String

manganese (oxyhydr) oxides from the suspended size fraction (

attribute

MnO2_susp

long_name

String

Mn O2 Susp

attribute

MnO2_susp

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P03/current/C035/ (external link)

attribute

MnO2_susp

units

String

micrograms/liter

variable

MnO2_susp_flag

byte

attribute

MnO2_susp_flag

_FillValue

byte

127

attribute

MnO2_susp_flag

actual_range

byte

0, 4

attribute

MnO2_susp_flag

bcodmo_name

String

flag

attribute

MnO2_susp_flag

colorBarMaximum

double

150.0

attribute

MnO2_susp_flag

colorBarMinimum

double

0.0

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