ERDDAP > info > bcodmo_dataset_818707

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	[GP16 Soluble and Dissolved Fe and Fe Isotopes] - Concentrations of soluble and dissolved iron (Fe) and iron isotope ratios from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific during November & December 2013 (U.S. GEOTRACES East Pacific Zonal Transect)		F   I   M	background			BCO-DMO	bcodmo_dataset_818707

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,.odvTxt
attribute	NC_GLOBAL	acquisition_description	String	Sample Collection and Filtration All seawater samples analyzed here for dissolved iron (dFe) concentration and isotope ratios (\u03b456Fe) were collected between 21 November and 4 December 2013 aboard the R/V Thomas G. Thompson as part of the U.S. GEOTRACES GP16 East Pacific Zonal Transect (Resing et al. 2015, Fitzsimmons et al. 2017, John et al. 2018). The EPZT encompassed 35 stations along an 8000 km transect that traversed from Peru to Tahiti (Peters et al. 2017, Moffett & German 2018). All seawater samples were collected as part of the standard U.S. GEOTRACES trace metal casts, using a trace metal clean carousel and CTD (Seabird) with a Kevlar conducting cable, fitted with 24 x 12-L Teflon-coated GO-Flo bottles (General Oceanics), following established GEOTRACES protocols (Cutter & Bruland 2012). Rosette deployments began with GO-Flo bottles open, allowing them to flush during deployment to depth, and the GO-Flo bottle was subsequently tripped on ascent at ~3 m/min, to minimize chances of contamination from rosette hardware. Upon recovery, GO-Flo bottles were transferred immediately into a clean van for subsampling and were pressurized using HEPA-filtered air. Each GO-Flo bottle was fitted with acid-cleaned Teflon tubing connected to a 0.2 um Acropak-200 capsule filter (Pall), allowing collection of filtered seawater for bulk dissolved Fe analysis into 4 L acid-clean low-density polyethylene (LDPE) bottles, after three 10% volume seawater rinses of the caps and threads (Cutter et al. 2017). Filtered seawater from Station 26 at 2650 m and 2700 m depths were combined to achieve sufficient volume for ultrafiltration processing. Ultrafiltration and Sample Processing Immediately after sample collection and 0.2 um filtration, 1 L of the 4 L homogenized sample was poured into a clean 1 L LDPE bottle for dissolved Fe analysis, and the remaining sample (~ 3 L) was ultrafiltered. Ultrafiltration took place using a cross flow filtration system (CFF) with a 10 kDa (~0.003 um for globular proteins; Erickson et al. 2009) regenerated cellulose membrane (Pellicon XL PLCGC) in single-pass mode (see Fitzsimmons and Boyle 2014 for detailed methods). Briefly, before collection, the CFF system was conditioned using ~500 mL of sample seawater, and the sample bottles, caps, and threads were rinsed with a minimal amount of ultrafiltered seawater. After conditioning, ~1 L of permeate (soluble fraction) and ~1 L of retentate were collected into separate 1 L LDPE bottles. All samples were then acidified to 0.012 M hydrochloric acid (HCl, Optima, Fisher) and stored for more than a year before analysis. Soluble Fe (sFe) is defined as the concentration in the permeate solution. Dissolved Fe Concentration Analysis Iron concentrations in the dissolved, permeate, and retentate phases were analyzed using a 15 mL aliquot of the 1 L samples. Samples were analyzed in the Sherrell lab at Rutgers University with a SeaFAST pico system (ESI, Omaha, NE, USA) and Thermo Element 1 HR-ICPMS following the SeaFAST methods of Lagerstrom et al. (2013). Samples were analyzed offline, as outlined by Jensen et al. (2020). Dissolved Fe isotope ratio (\u03b456Fe) Analysis Iron stable isotope ratios (\u03b456Fe) were determined using a double-spike multi-collector MC-ICPMS technique, based on Conway et al. (2013). All sample processing and Fe isotope analyses were carried out at the University of South Florida (USF). Chemical processing of samples took place in ISO-5 laminar flow hoods within the Marine Metal Isotope and Trace Element ISO-6 clean laboratory at the USF College of Marine Science. All ultrapure water used was from a Thermo Scientific Barnstead Genpure Ultrapure Water System; all plasticware was cleaned using standard procedures (Conway et al. 2013); and all reagents were Optima grade from Fisher Scientific. Briefly, the ~1 L of dissolved, permeate, and retentate seawater samples were spiked with a double spike containing 57Fe and 58Fe at a ratio of ~1:1, to provide a ~1:2 ratio of natural:spike Fe in samples. Following spiking, samples were amended to 10 mM H\u2082O\u2082 and left for 24 h after spiking. Samples were then brought to pH ~6, and Fe was extracted from seawater onto Nobias PA-1 chelating resin beads using a batch extraction technique. The Fe was then eluted from the Nobias resin using 3 M HNO\u2083, evaporated to dryness, refluxed with a conc. HNO\u2083 and conc. H\u2082O\u2082 mixture, evaporated to dryness, taken up in 1 M HCl, and purified using an AGMP-1 (BioRad) anion-exchange column chemistry technique following Sieber et al. (2019). Following column purification, samples were evaporated to dryness before being re-dissolved in 0.5 mL of 2% HNO\u2083 (v/v) for analysis by MC-ICPMS. Samples were analyzed for Fe isotope ratios by Thermo Neptune Plus MC-ICPMS at USF\u2019s Tampa Bay Plasma Facility at the USF College of Marine Science. Briefly, samples were introduced via a ~100 \u00b5L/min PFA nebulizer into an ESI Apex \u03a9 desolvator (with Ar but no N\u2082 add gas), using a Ni Jet sampler cone and an Al X skimmer cone. Fe isotope ratios were measured using high resolution mode, and instrumental mass bias was corrected using the double spike technique. \u03b456Fe were calculated following an iterative procedure based on Siebert et al. (2001) and are expressed relative to the IRMM-014 international standard. Problem report: Filtered seawater from Station 26 at 2650 m and 2700 m depths were combined to achieve sufficient volume for ultrafiltration processing.
attribute	NC_GLOBAL	awards_0_award_nid	String	640077
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1234827
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1234827
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	awards_1_award_nid	String	787554
attribute	NC_GLOBAL	awards_1_award_number	String	OCE-1713677
attribute	NC_GLOBAL	awards_1_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1713677
attribute	NC_GLOBAL	awards_1_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_1_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_1_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_1_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_1_program_manager_nid	String	51517
attribute	NC_GLOBAL	awards_2_award_nid	String	787559
attribute	NC_GLOBAL	awards_2_award_number	String	OCE-1434493
attribute	NC_GLOBAL	awards_2_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1434493
attribute	NC_GLOBAL	awards_2_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_2_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_2_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_2_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_2_program_manager_nid	String	51517
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Soluble & Dissolved Fe & Fe Isotopes US GEOTRACES EPZT (GP16, TN303) PI: Jessica Fitzsimmons & Janelle Steffen (TAMU) Co-PIs: Tim Conway (USF) & Robert Sherrell (Rutgers) Version date: 16 July 2020
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	dataset_current_state	String	Final and no updates
attribute	NC_GLOBAL	date_created	String	2020-07-15T21:01:55Z
attribute	NC_GLOBAL	date_modified	String	2020-07-16T23:32:51Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.818707.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-112.75
attribute	NC_GLOBAL	geospatial_lat_max	double	-11.671
attribute	NC_GLOBAL	geospatial_lat_min	double	-15.0
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-112.75
attribute	NC_GLOBAL	geospatial_lon_min	double	-128.0
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	2610.2
attribute	NC_GLOBAL	geospatial_vertical_min	double	2000.8
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/818707
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	Trace metal clean carousel and CTD (Seabird) with a Kevlar conducting cable, fitted with 24 x 12-L Teflon-coated GO-Flo bottles (General Oceanics), was used to collect water and depth measurements following established GEOTRACES protocols.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	818799
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	Trace metal clean carousel and CTD (Seabird)
attribute	NC_GLOBAL	instruments_1_acronym	String	ICP Mass Spec
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	Iron concentrations were analyzed in the Sherrell lab using a SeaFAST pico system (ESI, Omaha, NE, USA) and Thermo-Finnigan Element 1 HR-ICPMS following the SeaFAST methods of Lagerstrom et al., (2013).
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	818800
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	Thermo-Finnigan Element 1 HR-ICPMS
attribute	NC_GLOBAL	instruments_2_acronym	String	ICP Mass Spec
attribute	NC_GLOBAL	instruments_2_dataset_instrument_description	String	Samples were analyzed for Fe isotope ratios by Thermo Neptune Plus MC-ICPMS at USF’s Tampa Bay Plasma Facility at the USF College of Marine Science.
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	818801
attribute	NC_GLOBAL	instruments_2_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_2_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB15/
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Inductively Coupled Plasma Mass Spectrometer
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	530
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Thermo Neptune Plus MC-ICPMS
attribute	NC_GLOBAL	instruments_3_acronym	String	GO-FLO Teflon TM
attribute	NC_GLOBAL	instruments_3_dataset_instrument_description	String	A trace metal clean carousel and CTD (Seabird) with a Kevlar conducting cable, fitted with 24 x 12-L Teflon-coated GO-Flo bottles (General Oceanics), was used to collect water and depth measurements following established GEOTRACES protocols.
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	818798
attribute	NC_GLOBAL	instruments_3_description	String	GO-FLO Teflon-lined Trace Metal free sampling bottles are used for collecting water samples for trace metal, nutrient and pigment analysis. The GO-FLO sampling bottle is designed specifically to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths.
attribute	NC_GLOBAL	instruments_3_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/30/
attribute	NC_GLOBAL	instruments_3_instrument_name	String	GO-FLO Teflon Trace Metal Bottle
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	533
attribute	NC_GLOBAL	instruments_3_supplied_name	String	Teflon-coated GO-Flo bottles (General Oceanics)
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, cast, cast_no, chemical, conc, conductivity, cruise, ctd, ctd_depth, data, dataset, date, delta, delta_56_dFe, delta_56_dFe_error, delta_56_dFe_flag, delta_56_sFe, delta_56_sFe_error, delta_56_sFe_flag, depth, dFe_conc, dFe_conc_error, dFe_conc_flag, dmo, erddap, error, event, event_no, flag, geotraces, geotraces_no, iso, latitude, longitude, management, oceanography, office, preliminary, sFe_conc, sFe_conc_error, sFe_conc_flag, sonde, station, station_no, temperature, time, time2
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/818707/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/818707
attribute	NC_GLOBAL	Northernmost_Northing	double	-11.671
attribute	NC_GLOBAL	param_mapping	String	{'818707': {'ctd_depth': 'flag - depth', 'lat': 'flag - latitude', 'long': 'flag - longitude', 'ISO_DateTime_UTC': 'flag - time'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/818707/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Texas A&M University
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	TAMU
attribute	NC_GLOBAL	people_0_person_name	String	Jessica N. Fitzsimmons
attribute	NC_GLOBAL	people_0_person_nid	String	51632
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	University of South Florida
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	USF
attribute	NC_GLOBAL	people_1_person_name	String	Timothy M. Conway
attribute	NC_GLOBAL	people_1_person_nid	String	51623
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	Rutgers University
attribute	NC_GLOBAL	people_2_person_name	String	Robert M. Sherrell
attribute	NC_GLOBAL	people_2_person_nid	String	50919
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	Texas A&M University
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	TAMU
attribute	NC_GLOBAL	people_3_person_name	String	Janelle M. Steffen
attribute	NC_GLOBAL	people_3_person_nid	String	818841
attribute	NC_GLOBAL	people_3_role	String	Student
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	Shannon Rauch
attribute	NC_GLOBAL	people_4_person_nid	String	51498
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	U.S. GEOTRACES EPZT,GEOTRACES EPZT Suspended Particles
attribute	NC_GLOBAL	projects_0_acronym	String	U.S. GEOTRACES EPZT
attribute	NC_GLOBAL	projects_0_description	String	From the NSF Award Abstract The mission of the International GEOTRACES Program (www.geotraces.org), of which the U.S. chemical oceanography research community is a founding member, is "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions" (GEOTRACES Science Plan, 2006). In the United States, ocean chemists are currently in the process of organizing a zonal transect in the eastern tropical South Pacific (ETSP) from Peru to Tahiti as the second cruise of the U.S.GEOTRACES Program. This Pacific section includes a large area characterized by high rates of primary production and particle export in the eastern boundary associated with the Peru Upwelling, a large oxygen minimum zone that is a major global sink for fixed nitrogen, and a large hydrothermal plume arising from the East Pacific Rise. This particular section was selected as a result of open planning workshops in 2007 and 2008, with a final recommendation made by the U.S.GEOTRACES Steering Committee in 2009. It is the first part of a two-stage plan that will include a meridional section of the Pacific from Tahiti to Alaska as a subsequent expedition. This award provides funding for management of the U.S.GEOTRACES Pacific campaign to a team of scientists from the University of Southern California, Old Dominion University, and the Woods Hole Oceanographic Institution. The three co-leaders will provide mission leadership, essential support services, and management structure for acquiring the trace elements and isotopes samples listed as core parameters in the International GEOTRACES Science Plan, plus hydrographic and nutrient data needed by participating investigators. With this support from NSF, the management team will (1) plan and coordinate the 52-day Pacific research cruise described above; (2) obtain representative samples for a wide variety of trace metals of interest using conventional CTD/rosette and GEOTRACES Sampling Systems; (3) acquire conventional JGOFS/WOCE-quality hydrographic data (CTD, transmissometer, fluorometer, oxygen sensor, etc) along with discrete samples for salinity, dissolved oxygen (to 1 uM detection limits), plant pigments, redox tracers such as ammonium and nitrite, and dissolved nutrients at micro- and nanomolar levels; (4) ensure that proper QA/QC protocols are followed and reported, as well as fulfilling all GEOTRACES Intercalibration protocols; (5) prepare and deliver all hydrographic-type data to the GEOTRACES Data Center (and US data centers); and (6) coordinate cruise communications between all participating investigators, including preparation of a hydrographic report/publication. Broader Impacts: The project is part of an international collaborative program that has forged strong partnerships in the intercalibration and implementation phases that are unprecedented in chemical oceanography. The science product of these collective missions will enhance our ability to understand how to interpret the chemical composition of the ocean, and interpret how climate change will affect ocean chemistry. Partnerships include contributions to the infrastructure of developing nations with overlapping interests in the study area, in this case Peru. There is a strong educational component to the program, with many Ph.D. students carrying out thesis research within the program. Figure 1. The 2013 GEOTRACES EPZT Cruise Track. [click on the image to view a larger version]
attribute	NC_GLOBAL	projects_0_end_date	String	2015-06
attribute	NC_GLOBAL	projects_0_geolocation	String	Eastern Tropical Pacific - Transect from Peru to Tahiti
attribute	NC_GLOBAL	projects_0_name	String	U.S. GEOTRACES East Pacific Zonal Transect
attribute	NC_GLOBAL	projects_0_project_nid	String	499723
attribute	NC_GLOBAL	projects_0_project_website	String	https://www.geotraces.org/
attribute	NC_GLOBAL	projects_0_start_date	String	2012-06
attribute	NC_GLOBAL	projects_1_acronym	String	GEOTRACES EPZT Suspended Particles
attribute	NC_GLOBAL	projects_1_description	String	During the 2013 GEOTRACES Eastern Pacific cruise a diverse range of oceanic environments will be encountered from the high productivity/high particle flux waters off Peru to the Peru-Chile oxygen minimum zone, the hydrothermal plume of the East Pacific Rise, and finally to some of the most oligotrophic waters around Tahiti. Scientists from Rutgers University and Woods Hole Oceanographic Institution will sample suspended particulates from the same GO-Flo bottles that will be used to sample dissolved trace metals and their isotopes (TEIs) across this entire transect. The suspended matter samples will be analyzed for 42 elements, including the particle-reactive rare earth elements. In addition, core-top sediments will be collected at every water-column sampling station and analyzed for both bulk composition (i.e., relative % content of organic carbon, opal, biogenic carbonate and lithogenic components) and the same 42 elements to be analyzed in the suspended particulates. Results from this study will be used to assess the role of suspended particulates in the biogeochemical cycling of TEIs across the Eastern Pacific by addressing three key sets of questions: (1) How does uptake of TEIs into phytoplankton and non-living particles in the upper ocean drive the suspended particulate composition through the deeper water column, along the substantial gradient from the high productivity Peru margin to the oligotrophic ocean interior?; (2) How faithfully is the along-transect variability in the upper ocean transmitted to the sediment (paleo) record?; (3) What are the relative influences of vertical recycling versus lateral advection in generating the distributions of dissolved and particulate TEIs observed in the Peru-Chile OMZ?; (4) Is there a characteristic signature of OMZ activity that is preserved in core-top sediments?; (5) What dominates TEI uptake onto/into authigenic particles in hydrothermal plumes and to what extent are these processes augmented by continuing uptake in core-top sediments?; and (6) What is the net effect from submarine venting on global TEI budgets? As regards broader impacts, the scientist from Rutgers University is collaborating with the Education Director of the Centers for Ocean Science Education Excellence Networked Ocean World (COSEE-NOW) to contribute to the MARE (Marine Activities, Resources, and Education) program by inviting teachers and high school students to workshops and presentations on climate and ocean sciences. With the help of COSEE-NOW, he also plans to create educational video clips during the Pacific cruise and the subsequent laboratory based analytical work to educate them on the use of geochemistry to understand how the ocean works. Both scientists also plan to develop a teaching module entitled "Particles, Metals, and Carbon" for an Introduction to Oceanography class taught by the Rutgers scientist. One postdoc from Rutgers University would be supported and trained as part of this project.
attribute	NC_GLOBAL	projects_1_end_date	String	2016-12
attribute	NC_GLOBAL	projects_1_geolocation	String	Subtropical Southeastern Pacific Ocean
attribute	NC_GLOBAL	projects_1_name	String	GEOTRACES: Suspended particle geochemistry along the US GEOTRACES Eastern Pacific Zonal Transect, from high productivity ocean margin to deep sea hydrothermal plume
attribute	NC_GLOBAL	projects_1_project_nid	String	640083
attribute	NC_GLOBAL	projects_1_start_date	String	2013-01
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	-15.0
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	cruise,dFe_conc_flag,sFe_conc_flag,delta_56_dFe_flag,delta_56_sFe_flag
attribute	NC_GLOBAL	summary	String	Concentrations of soluble and dissolved iron (Fe) and iron isotope ratios from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific during November & December 2013.
attribute	NC_GLOBAL	time_coverage_end	String	2013-12-04T06:41Z
attribute	NC_GLOBAL	time_coverage_start	String	2013-11-21T01:19Z
attribute	NC_GLOBAL	title	String	[GP16 Soluble and Dissolved Fe and Fe Isotopes] - Concentrations of soluble and dissolved iron (Fe) and iron isotope ratios from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific during November & December 2013 (U.S. GEOTRACES East Pacific Zonal Transect)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-128.0
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.5
variable	cruise		String
attribute	cruise	bcodmo_name	String	cruise_id
attribute	cruise	description	String	Cruise identifier
attribute	cruise	long_name	String	Cruise
attribute	cruise	units	String	unitless
variable	station_no		byte
attribute	station_no	_FillValue	byte	127
attribute	station_no	actual_range	byte	18, 26
attribute	station_no	bcodmo_name	String	station
attribute	station_no	description	String	Station number
attribute	station_no	long_name	String	Station No
attribute	station_no	units	String	unitless
variable	cast_no		byte
attribute	cast_no	_FillValue	byte	127
attribute	cast_no	actual_range	byte	1, 11
attribute	cast_no	bcodmo_name	String	cast
attribute	cast_no	description	String	Cast number
attribute	cast_no	long_name	String	Cast No
attribute	cast_no	units	String	unitless
variable	event_no		short
attribute	event_no	_FillValue	short	32767
attribute	event_no	actual_range	short	4233, 4343
attribute	event_no	bcodmo_name	String	event
attribute	event_no	description	String	Event number
attribute	event_no	long_name	String	Event No
attribute	event_no	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/
attribute	event_no	units	String	unitless
variable	geotraces_no		String
attribute	geotraces_no	bcodmo_name	String	sample
attribute	geotraces_no	description	String	GEOTRACES sample number
attribute	geotraces_no	long_name	String	Geotraces No
attribute	geotraces_no	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	geotraces_no	units	String	unitless
variable	date		String
attribute	date	bcodmo_name	String	date_utc
attribute	date	description	String	Sampling date (UTC); format: YYYY-MM-DD
attribute	date	long_name	String	Date
attribute	date	time_precision	String	1970-01-01
attribute	date	units	String	unitless
variable	time2		String
attribute	time2	bcodmo_name	String	time_utc
attribute	time2	description	String	Sampling time (UTC); format: hh:mm
attribute	time2	long_name	String	Time
attribute	time2	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.38499674E9, 1.38613926E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	Sampling date and time (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmZ
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	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	-15.0, -11.671
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
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	-128.0, -112.75
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
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	source_name	String	long
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	2000.8, 2610.2
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	description	String	Depth measured by CTD
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Ctd 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	dFe_conc		float
attribute	dFe_conc	_FillValue	float	NaN
attribute	dFe_conc	actual_range	float	0.629, 8.742
attribute	dFe_conc	bcodmo_name	String	Fe
attribute	dFe_conc	description	String	Dissolved Fe concentration (
attribute	dFe_conc	long_name	String	D Fe Conc
attribute	dFe_conc	units	String	nanomoles per kilogram (nmol kg-1)
variable	dFe_conc_error		float
attribute	dFe_conc_error	_FillValue	float	NaN
attribute	dFe_conc_error	actual_range	float	0.031, 0.437
attribute	dFe_conc_error	bcodmo_name	String	Fe
attribute	dFe_conc_error	colorBarMaximum	double	50.0
attribute	dFe_conc_error	colorBarMinimum	double	0.0
attribute	dFe_conc_error	description	String	1 std. deviation error on dissolved Fe concentration
attribute	dFe_conc_error	long_name	String	D Fe Conc Error
attribute	dFe_conc_error	units	String	nanomoles per kilogram (nmol kg-1)
variable	dFe_conc_flag		byte
attribute	dFe_conc_flag	_FillValue	byte	127
attribute	dFe_conc_flag	actual_range	byte	2, 2
attribute	dFe_conc_flag	bcodmo_name	String	q_flag
attribute	dFe_conc_flag	colorBarMaximum	double	150.0
attribute	dFe_conc_flag	colorBarMinimum	double	0.0
attribute	dFe_conc_flag	description	String	Quality flag for dissolved Fe concentration (SeaDataNet scheme)
attribute	dFe_conc_flag	long_name	String	D Fe Conc Flag
attribute	dFe_conc_flag	units	String	unitless
variable	sFe_conc		float
attribute	sFe_conc	_FillValue	float	NaN
attribute	sFe_conc	actual_range	float	0.257, 4.88
attribute	sFe_conc	bcodmo_name	String	Fe
attribute	sFe_conc	description	String	Soluble Fe concentration (
attribute	sFe_conc	long_name	String	S Fe Conc
attribute	sFe_conc	units	String	nanomoles per kilogram (nmol kg-1)
variable	sFe_conc_error		float
attribute	sFe_conc_error	_FillValue	float	NaN
attribute	sFe_conc_error	actual_range	float	0.0129, 0.244
attribute	sFe_conc_error	bcodmo_name	String	Fe
attribute	sFe_conc_error	colorBarMaximum	double	50.0
attribute	sFe_conc_error	colorBarMinimum	double	0.0
attribute	sFe_conc_error	description	String	1 std. deviation error on soluble Fe concentration
attribute	sFe_conc_error	long_name	String	S Fe Conc Error
attribute	sFe_conc_error	units	String	nanomoles per kilogram (nmol kg-1)
variable	sFe_conc_flag		byte
attribute	sFe_conc_flag	_FillValue	byte	127
attribute	sFe_conc_flag	actual_range	byte	2, 2
attribute	sFe_conc_flag	bcodmo_name	String	q_flag
attribute	sFe_conc_flag	colorBarMaximum	double	150.0
attribute	sFe_conc_flag	colorBarMinimum	double	0.0
attribute	sFe_conc_flag	description	String	Quality flag for soluble Fe concentration (SeaDataNet scheme)
attribute	sFe_conc_flag	long_name	String	S Fe Conc Flag
attribute	sFe_conc_flag	units	String	unitless
variable	delta_56_dFe		float
attribute	delta_56_dFe	_FillValue	float	NaN
attribute	delta_56_dFe	actual_range	float	-0.2, 0.54
attribute	delta_56_dFe	bcodmo_name	String	Fe
attribute	delta_56_dFe	description	String	Dissolved 56/54 Fe isotope ratio (
attribute	delta_56_dFe	long_name	String	Delta 56 D Fe
attribute	delta_56_dFe	units	String	per mil (‰)
variable	delta_56_dFe_error		float
attribute	delta_56_dFe_error	_FillValue	float	NaN
attribute	delta_56_dFe_error	actual_range	float	0.02, 0.1
attribute	delta_56_dFe_error	bcodmo_name	String	Fe
attribute	delta_56_dFe_error	colorBarMaximum	double	50.0
attribute	delta_56_dFe_error	colorBarMinimum	double	0.0
attribute	delta_56_dFe_error	description	String	2 std. deviation error on dissolved 56/54 Fe isotope ratio
attribute	delta_56_dFe_error	long_name	String	Delta 56 D Fe Error
attribute	delta_56_dFe_error	units	String	per mil (‰)
variable	delta_56_dFe_flag		byte
attribute	delta_56_dFe_flag	_FillValue	byte	127
attribute	delta_56_dFe_flag	actual_range	byte	2, 2
attribute	delta_56_dFe_flag	bcodmo_name	String	q_flag
attribute	delta_56_dFe_flag	colorBarMaximum	double	150.0
attribute	delta_56_dFe_flag	colorBarMinimum	double	0.0
attribute	delta_56_dFe_flag	description	String	Quality flag for dissolved Fe isotope ratio (SeaDataNet scheme)
attribute	delta_56_dFe_flag	long_name	String	Delta 56 D Fe Flag
attribute	delta_56_dFe_flag	units	String	unitless
variable	delta_56_sFe		float
attribute	delta_56_sFe	_FillValue	float	NaN
attribute	delta_56_sFe	actual_range	float	0.09, 0.68
attribute	delta_56_sFe	bcodmo_name	String	Fe
attribute	delta_56_sFe	description	String	Soluble 56/54 Fe isotope ratio (
attribute	delta_56_sFe	long_name	String	Delta 56 S Fe
attribute	delta_56_sFe	units	String	per mil (‰)
variable	delta_56_sFe_error		float
attribute	delta_56_sFe_error	_FillValue	float	NaN
attribute	delta_56_sFe_error	actual_range	float	0.03, 0.1
attribute	delta_56_sFe_error	bcodmo_name	String	Fe
attribute	delta_56_sFe_error	colorBarMaximum	double	50.0
attribute	delta_56_sFe_error	colorBarMinimum	double	0.0
attribute	delta_56_sFe_error	description	String	2 std. deviation error on soluble 56/54 Fe isotope ratio
attribute	delta_56_sFe_error	long_name	String	Delta 56 S Fe Error
attribute	delta_56_sFe_error	units	String	per mil (‰)
variable	delta_56_sFe_flag		byte
attribute	delta_56_sFe_flag	_FillValue	byte	127
attribute	delta_56_sFe_flag	actual_range	byte	2, 2
attribute	delta_56_sFe_flag	bcodmo_name	String	q_flag
attribute	delta_56_sFe_flag	colorBarMaximum	double	150.0
attribute	delta_56_sFe_flag	colorBarMinimum	double	0.0
attribute	delta_56_sFe_flag	description	String	Quality flag for soluble Fe isotope ratio (SeaDataNet scheme)
attribute	delta_56_sFe_flag	long_name	String	Delta 56 S Fe Flag
attribute	delta_56_sFe_flag	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.