ERDDAP > info > bcodmo_dataset_651880

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph		files	public	[GA01 - Dissolved Pb] - Dissolved lead data collected from the R/V Pourquoi pas (GEOVIDE) in the North Atlantic, Labrador Sea (section GA01) during 2014 (Filling Gaps in the Atlantic and Pacific Pb and Pb Isotope Spatial and Temporal Evolution)		F   I   M	background			BCO-DMO	bcodmo_dataset_651880

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute	NC_GLOBAL	acquisition_description	String	Sample storage bottle lids and threads were soaked overnight in 2N reagent grade HCl, then filled with 1N reagent grade HCl to be heated in an oven at 60 degrees celcius\u00a0overnight, inverted, heated for a second day, and rinsed 5X with pure distilled water.\u00a0 The bottles were then filled with trace metal clean dilute HCl (0.01N HCl) and again heated in the oven for one day on either end.\u00a0 Clean sample bottles were emptied, and double-bagged prior to rinsing and filling with sample. As stated in the cruise report, trace metal clean seawater samples were collected using the French GEOTRACES clean rosette (General Oceanics Inc. Model 1018 Intelligent Rosette), equipped with twenty-two new 12L GO-FLO bottles (two bottles were leaking and were never deployed during the cruise). The 22 new GO-FLO bottles were initially cleaned in LEMAR laboratory following the GEOTRACES procedures (Cutter and Bruland, 2012). The rosette was deployed on a 6mm Kevlar cable with a dedicated custom designed clean winch. Immediately after recovery, GO-FLO bottles were individually covered at each end with plastic bags to minimize contamination. They were then transferred into a clean container (class-100) for sampling. On each trace metal cast, nutrient and/or salinity samples were taken to check potential leakage of the Go-Flo bottles. Prior to filtration, GO-FLO bottles were mixed manually three times. GO-FLO bottles were pressurized to less than\u00a08 psi with 0.2-um filtered N2\u00a0(Air Liquide). For Stations 1, 11, 15, 17, 19, 21, 25, 26, 29, 32 GO-FLO spigots were fitted with an acid-cleaned piece of Bev-a-Line tubing that fed into a 0.2 um capsule filters (SARTOBRAN\u00a0300, Sartorius). For all other stations (13, 34, 36, 38, 40, 42, 44, 49, 60, 64, 68, 69, 71, 77) seawater was filtered directly through paired filters (Pall Gelman Supor 0.45um polystersulfone, and Millipore mixed ester cellulose MF 5 um) mounted in Swinnex polypropylene filter holders, following the Planquette and Sherrell (2012) method. Filters were cleaned following the protocol described in Planquette and Sherrell (2012) and kept in acid-cleaned 1L LDPE bottles (Nalgene) filled with ultrapure water (Milli-Q, 18.2 megaohm/cm) until use. Subsamples were taken into acid-cleaned (see above) Nalgene HDPE bottles after a triple rinse with the sample. All samples were acidified back in the Boyle laboratory at 2mL per liter seawater (pH 2) with trace metal clean 6N HCl. On this cruise, only the particulate samples were assigned GEOTRACES numbers. In this dataset, the dissolved Pb samples collected at the same depth (sometimes on a different cast) as the particulate samples have been assigned identifiers as \u201cSAMPNO\u201d which corresponds to the particulate GEOTRACES number. In cases where there were no corresponding particulate samples, a number was generated as \u201cPI_SAMPNO\u201d. Upon examining the data, we observed that the sample taken from rosette position 1 (usually the near-bottom sample) was always higher in [Pb] than the sample taken immediately above that, and that the excess decreased as the cruise proceeded. The Pb isotope ratio of these samples were higher than the comparison bottles as well. A similar situation was seen for the sample taken from rosette positions 5, 20 and 21 when compared to the depth-interpolated [Pb] from the samples immediately above and below. Also, at two stations where our near-bottom sample was taken from rosette position 2, there was no [Pb] excess over the samples immediately above. We believe that this evidence points to sampler-induced contamination that was being slowly washed out during the cruise, but never completely. So we have flagged all of these analyses with a \u201c3\u201d indicating that we do not believe that these samples should be trusted as reflecting the true ocean [Pb]. In addition, we observed high [Pb] in the samples at Station 1 and very scattered Pb isotope ratios. The majority of these concentrations were far in excess of those values observed at nearby Station 11, and also the nearby USGT10-01. Discussion among other cruise participants revealed similarly anomalous data for other trace metals (e.g., Hg species). After discussion at the 2016 GEOVIDE Workshop, we came to the conclusion that this is*- evidence of GoFlo bottles not having sufficient time to \u201cclean up\u201d prior to use, and that most or all bottles from Station 1 were contaminated. We flagged all Station 1 data with a \u201c3\u201d indicating that we do not believe these values reflect the true ocean [Pb]. Samples were analyzed at least 1 month after acidification over 36 analytical sessions by a resin pre-concentration method. This method utilized the isotope-dilution ICP-MS method described in Lee et al. 2011, which includes pre-concentration on nitrilotriacetate (NTA) resin and analysis on a Fisons PQ2+ using a 400uL/min nebulizer. Briefly, samples were poured into 30mL subsample bottles. Then, triplicate 1.5mL polypropylene vials (Nalgene) were rinsed three times with the 30mL subsample.\u00a0 Each sample was pipetted (1.3mL) from the 30mL subsample to the 1.5mL vial.\u00a0 Pipettes were calibrated daily to the desired volume.\u00a0 25 ul of a 204Pb spike were added to each sample, and the pH was raised to 5.3 using a trace metal clean ammonium acetate buffer, prepared at a pH of between 7.95 and 7.98.\u00a0 2400 beads of NTA Superflow resin (Qiagen Inc., Valencia, CA) were added to the mixture, and the vials were set to shake on a shaker for 3 \u2013 6 days to allow the sample to equilibrate with the resin.\u00a0 After equilibration, the beads were centrifuged and washed 3 times with pure distilled water, using a trace metal clean siphon tip to remove the water wash from the sample vial following centrifugation.\u00a0 After the last wash, 350\u03bcl of a 0.1N solution of trace metal clean HNO3 was added to the resin to elute the metals, and the samples were set to shake on a shaker for 1 \u2013 2 days prior to analysis by ICP-MS. NTA Superflow resin was cleaned by batch rinsing with 0.1N trace metal clean HCl for a few hours, followed by multiple washes until the pH of the solution was above 4.\u00a0 Resin was stored at 4 degrees celcius\u00a0in the dark until use, though it was allowed to equilibrate to room temperature prior to the addition to the sample. Nalgene polypropylene (PPCO) vials were cleaned by heated submersion for 2 days at 60 degrees celcius\u00a0in 1N reagent grade HCl, followed by a bulk rinse and 4X individual rinse of each vial with pure distilled water. Each vial was then filled with trace metal clean dilute HCl (0.01N HCl) and heated in the oven at 60 degrees celcius\u00a0for one day on either end.\u00a0 Vials were kept filled until just before usage. On each day of sample analysis, procedure blanks were determined. Replicates (12) of 300uL of an in-house standard reference material seawater (low Pb surface water) were used, where the amount of Pb in the 300uL was verified as negligible. The procedural blank over the relevant sessions for resin preconcentration method ranged from 2.2 \u2013 9.9pmol/kg, averaging 4.6 +/-\u00a01.7pmol/kg. Within a day, procedure blanks were very reproducible with an average standard deviation of 0.7pmol/kg, resulting in detection limits (3x this standard deviation) of 2.1pmol/kg. Replicate analyses of three different large-volume seawater samples (one with 11pmol/kg, another with 24pmol/kg, and a third with 38pmol/kg) indicated that the precision of the analysis is 4% or 1.6pmol/kg, whichever is larger. Triplicate analyses of an international reference standard gave SAFe D2: 27.2 +/-\u00a01.7 pmol/kg. However, this standard run was linked into our own long- term quality control standards that are run on every analytical day to maintain long-term consistency. \u00a0 For the most part, the reported numbers are simply as calculated from the isotope dilution equation on the day of the analysis. For some analytical days, however, quality control samples indicated offsets in the blank used to correct the samples. For the upper 5 depths of Station 29, all depths of Station 40, and the deepest 2 depths of Station 42, the quality control samples indicated our blank was overcorrecting by 3.4pM, and we applied a -3.4pM correction to our Pb concentrations for that day. For the deepest 11 depths of Station 34, the quality control samples indicated our blank was overcorrecting by 10.2pM (due to contamination of the low trace metal seawater stock), and we applied a -10.2 pM correction to our Pb concentrations for that day. With these corrections, the overall internal comparability of the Pb collection should be better than 4%. The errors associated with these Pb concentration measurements are on average 3.2% of the concentration (0.1 \u2013 4.4pmol/kg). Although there was a formal crossover station (1) that overlaps with USGT10-01 (GA-03), sample quality on the first station of GEOVIDE appears problematical making the comparison unhelpful. However, GEOVIDE station 11 (40.33 degrees North, 12.22 degrees\u00a0West) is not too far from USGT10-01 (38.325 degrees\u00a0North, 9.66 degrees\u00a0West) and makes for a reasonable comparison. It should also be noted that the MIT lab has intercalibrated Pb with other labs on the 2008 IC1 cruise, on the 2011 USGT11 (GA-03) cruise, and on the EPZT (GP-16) cruises, and maintains in-lab quality control standards for long-term data quality evaluation. Ten percent of the samples were analyzed by Rick Kayser and the remaining ninety percent of the samples were analyzed by Cheryl Zurbrick. There was no significant difference between them for the lowest concentration large-volume seawater reference sample (RK averaged 11.0 +/-\u00a01.6 pmol/kg; CZ averaged 11.6 +/-\u00a01.6 pmol/kg).
attribute	NC_GLOBAL	awards_0_award_nid	String	651714
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1357224
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1357224
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	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	51517
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Dissolved Pb E. Boyle and C. Zubrick, PIs Version 3 October 2017
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	2016-07-15T13:45:22Z
attribute	NC_GLOBAL	date_modified	String	2020-03-24T13:50:40Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.651880.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-10.036
attribute	NC_GLOBAL	geospatial_lat_max	double	59.79927
attribute	NC_GLOBAL	geospatial_lat_min	double	40.33325
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-10.036
attribute	NC_GLOBAL	geospatial_lon_min	double	-51.09588
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/651880
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	ICP Mass Spec
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Inductively Coupled Plasma Mass Spectrometer
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	652123
attribute	NC_GLOBAL	instruments_0_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_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB15/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Inductively Coupled Plasma Mass Spectrometer
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	530
attribute	NC_GLOBAL	instruments_0_supplied_name	String	ICP-MS
attribute	NC_GLOBAL	instruments_1_acronym	String	Bottle
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	The General Oceanics Inc Model 1018 Intelligent Rosette was equipped with 22 new 12L GO-FLO bottles.
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	651959
attribute	NC_GLOBAL	instruments_1_description	String	A container, typically made of glass or plastic and with a narrow neck, used for storing drinks or other liquids.
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Bottle
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	542498
attribute	NC_GLOBAL	instruments_1_supplied_name	String	12L GO-FLO
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, bottle, btl, BTL_DATE, BTL_LAT, BTL_LON, btlnbr, castno, chemical, conc, cruise, cruise_id, ctdprs, data, dataset, date, dmo, erddap, flag, management, nbr, NBR_OF_SAMPLES, oceanography, office, Pb_D_CONC_BOTTLE, Pb_D_CONC_BOTTLE_FLAG, Pb_D_CONC_BOTTLE_SD, PI_SAMPNO, preliminary, samples, sampno, sect, SECT_ID, stnnbr
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/651880/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/651880
attribute	NC_GLOBAL	Northernmost_Northing	double	59.79927
attribute	NC_GLOBAL	param_mapping	String	{'651880': {'BTL_LON': 'flag - longitude', 'CTDPRS': 'flag - depth', 'BTL_LAT': 'flag - latitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/651880/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Massachusetts Institute of Technology
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	MIT-EAPS
attribute	NC_GLOBAL	people_0_person_name	String	Edward A. Boyle
attribute	NC_GLOBAL	people_0_person_nid	String	50984
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	Massachusetts Institute of Technology
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	MIT
attribute	NC_GLOBAL	people_1_person_name	String	Rick Kayser
attribute	NC_GLOBAL	people_1_person_nid	String	651719
attribute	NC_GLOBAL	people_1_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_1_role_type	String	originator
attribute	NC_GLOBAL	people_2_affiliation	String	Massachusetts Institute of Technology
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	MIT-EAPS
attribute	NC_GLOBAL	people_2_person_name	String	Cheryl Zurbrick
attribute	NC_GLOBAL	people_2_person_nid	String	644617
attribute	NC_GLOBAL	people_2_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_2_role_type	String	originator
attribute	NC_GLOBAL	people_3_affiliation	String	Massachusetts Institute of Technology
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	MIT-EAPS
attribute	NC_GLOBAL	people_3_person_name	String	Edward A. Boyle
attribute	NC_GLOBAL	people_3_person_nid	String	50984
attribute	NC_GLOBAL	people_3_role	String	Contact
attribute	NC_GLOBAL	people_3_role_type	String	related
attribute	NC_GLOBAL	people_4_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_4_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_4_person_name	String	Hannah Ake
attribute	NC_GLOBAL	people_4_person_nid	String	650173
attribute	NC_GLOBAL	people_4_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_4_role_type	String	related
attribute	NC_GLOBAL	project	String	GEOVIDE_Pb
attribute	NC_GLOBAL	projects_0_acronym	String	GEOVIDE_Pb
attribute	NC_GLOBAL	projects_0_description	String	Lead is a trace metal that has historically been emitted into the atmosphere through human activities such as coal burning and the use of leaded gasoline followed by deposition into the ocean. Once introduced into the marine environment, lead is dispersed via currents and removed by biota and other sinking particles. This century-scale growth of lead emissions followed by a decline upon the phase-out of leaded gasoline is one of the great global geochemical experiments. In this study, researchers at the Massachusetts Institute of Technology will analyze archived seawater samples to improve our knowledge on the spatial and temporal variability of lead concentrations and lead isotope ratios. This data will yield new insights into the sources and transport of lead and other metals, document the time-evolving human footprint on the ocean, and assist with validating models.
attribute	NC_GLOBAL	projects_0_end_date	String	2017-02
attribute	NC_GLOBAL	projects_0_geolocation	String	Subpolar North Atlantic; Labrador Sea; Greenland
attribute	NC_GLOBAL	projects_0_name	String	Filling Gaps in the Atlantic and Pacific Pb and Pb Isotope Spatial and Temporal Evolution
attribute	NC_GLOBAL	projects_0_project_nid	String	651715
attribute	NC_GLOBAL	projects_0_project_website	String	http://www.geovide.obs-vlfr.fr/
attribute	NC_GLOBAL	projects_0_start_date	String	2014-03
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	40.33325
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	cruise_id,SECT_ID
attribute	NC_GLOBAL	summary	String	Dissolved lead data collected from the R/V Pourquoi pas (GEOVIDE) in the North Atlantic, Labrador Sea (section GA01) during 2014
attribute	NC_GLOBAL	title	String	[GA01 - Dissolved Pb] - Dissolved lead data collected from the R/V Pourquoi pas (GEOVIDE) in the North Atlantic, Labrador Sea (section GA01) during 2014 (Filling Gaps in the Atlantic and Pacific Pb and Pb Isotope Spatial and Temporal Evolution)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-51.09588
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	unitless
variable	SECT_ID		String
attribute	SECT_ID	bcodmo_name	String	cruise_part
attribute	SECT_ID	description	String	Cruise section identifier
attribute	SECT_ID	long_name	String	SECT ID
attribute	SECT_ID	units	String	unitless
variable	STNNBR		byte
attribute	STNNBR	_FillValue	byte	127
attribute	STNNBR	actual_range	byte	1, 77
attribute	STNNBR	bcodmo_name	String	station
attribute	STNNBR	description	String	Station number
attribute	STNNBR	long_name	String	STNNBR
attribute	STNNBR	units	String	unitless
variable	BTL_DATE		int
attribute	BTL_DATE	_FillValue	int	2147483647
attribute	BTL_DATE	actual_range	int	20140519, 20140625
attribute	BTL_DATE	bcodmo_name	String	date
attribute	BTL_DATE	description	String	Date (yyyymmdd) when the bottle was fired according to the bottle file.
attribute	BTL_DATE	long_name	String	BTL DATE
attribute	BTL_DATE	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	BTL_DATE	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	40.33325, 59.79927
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	latitude
attribute	latitude	description	String	Latitude of bottle firing; north is positive.
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	BTL LAT
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	-51.09588, -10.036
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	longitude
attribute	longitude	description	String	Lonitude of bottle firing; east is positive.
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	BTL LON
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	BTLNBR		byte
attribute	BTLNBR	_FillValue	byte	127
attribute	BTLNBR	actual_range	byte	1, 24
attribute	BTLNBR	bcodmo_name	String	bottle
attribute	BTLNBR	description	String	Bottle number; typically 1-24
attribute	BTLNBR	long_name	String	BTLNBR
attribute	BTLNBR	units	String	unitless
variable	CTDPRS		double
attribute	CTDPRS	_FillValue	double	NaN
attribute	CTDPRS	actual_range	double	11.1, 5436.9
attribute	CTDPRS	bcodmo_name	String	pressure
attribute	CTDPRS	description	String	CTD pressure
attribute	CTDPRS	long_name	String	CTDPRS
attribute	CTDPRS	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/
attribute	CTDPRS	units	String	decibars
variable	SAMPNO		short
attribute	SAMPNO	_FillValue	short	32767
attribute	SAMPNO	actual_range	short	1, 560
attribute	SAMPNO	bcodmo_name	String	bottle
attribute	SAMPNO	description	String	Sequential sample number within the cast (usually corresponds to the bottle number)
attribute	SAMPNO	long_name	String	SAMPNO
attribute	SAMPNO	units	String	unitless
variable	PI_SAMPNO		short
attribute	PI_SAMPNO	_FillValue	short	32767
attribute	PI_SAMPNO	actual_range	short	10003, 10516
attribute	PI_SAMPNO	bcodmo_name	String	bottle
attribute	PI_SAMPNO	description	String	PI issued sample number for when a standard SAMPNO was not appropriate.
attribute	PI_SAMPNO	long_name	String	PI SAMPNO
attribute	PI_SAMPNO	units	String	unitless
variable	Pb_D_CONC_BOTTLE		float
attribute	Pb_D_CONC_BOTTLE	_FillValue	float	NaN
attribute	Pb_D_CONC_BOTTLE	actual_range	float	5.1, 101.0
attribute	Pb_D_CONC_BOTTLE	bcodmo_name	String	trace_metal_conc
attribute	Pb_D_CONC_BOTTLE	description	String	Pb passing through a 0.2um SARTOBRAN or 0.45 um Supor filter; Sample size was quantified volumetrically at room temperature, then converted to weight units assuming a density of 1.027 g/cc.
attribute	Pb_D_CONC_BOTTLE	long_name	String	Pb D CONC BOTTLE
attribute	Pb_D_CONC_BOTTLE	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P03/current/C035/
attribute	Pb_D_CONC_BOTTLE	units	String	picomoles per kilogram
variable	Pb_D_CONC_BOTTLE_SD		float
attribute	Pb_D_CONC_BOTTLE_SD	_FillValue	float	NaN
attribute	Pb_D_CONC_BOTTLE_SD	actual_range	float	0.0, 4.4
attribute	Pb_D_CONC_BOTTLE_SD	bcodmo_name	String	standard deviation
attribute	Pb_D_CONC_BOTTLE_SD	colorBarMaximum	double	50.0
attribute	Pb_D_CONC_BOTTLE_SD	colorBarMinimum	double	0.0
attribute	Pb_D_CONC_BOTTLE_SD	description	String	Standard deviation of Pb_D_BOTTLE
attribute	Pb_D_CONC_BOTTLE_SD	long_name	String	Pb D CONC BOTTLE SD
attribute	Pb_D_CONC_BOTTLE_SD	units	String	picomoles per kilogram
variable	NBR_OF_SAMPLES		byte
attribute	NBR_OF_SAMPLES	_FillValue	byte	127
attribute	NBR_OF_SAMPLES	actual_range	byte	2, 7
attribute	NBR_OF_SAMPLES	bcodmo_name	String	number
attribute	NBR_OF_SAMPLES	description	String	Number of samples collected
attribute	NBR_OF_SAMPLES	long_name	String	NBR OF SAMPLES
attribute	NBR_OF_SAMPLES	units	String	unitless
variable	Pb_D_CONC_BOTTLE_FLAG		byte
attribute	Pb_D_CONC_BOTTLE_FLAG	_FillValue	byte	127
attribute	Pb_D_CONC_BOTTLE_FLAG	actual_range	byte	1, 4
attribute	Pb_D_CONC_BOTTLE_FLAG	bcodmo_name	String	flag
attribute	Pb_D_CONC_BOTTLE_FLAG	colorBarMaximum	double	150.0
attribute	Pb_D_CONC_BOTTLE_FLAG	colorBarMinimum	double	0.0
attribute	Pb_D_CONC_BOTTLE_FLAG	description	String	Quality flag for parameter Pb_D_CONC_BOTTLE; follows the convention: 1 = good; 3 = questionable; 4 = bad
attribute	Pb_D_CONC_BOTTLE_FLAG	long_name	String	Pb D CONC BOTTLE FLAG
attribute	Pb_D_CONC_BOTTLE_FLAG	units	String	unitless
variable	CASTNO		byte
attribute	CASTNO	_FillValue	byte	127
attribute	CASTNO	actual_range	byte	2, 10
attribute	CASTNO	bcodmo_name	String	cast
attribute	CASTNO	description	String	Cast number
attribute	CASTNO	long_name	String	CASTNO
attribute	CASTNO	units	String	unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.