19:I[42426,["/_next/static/immutable/chunks/1xctgzqre-wsy.js","/_next/static/immutable/chunks/06_-wz6pdtp2b.js","/_next/static/immutable/chunks/30e52g49hg40p.js","/_next/static/immutable/chunks/02yq6tul2z-oh.js","/_next/static/immutable/chunks/10bx_ec2vj7n_.js","/_next/static/immutable/chunks/33bfn03fo8xnt.js","/_next/static/immutable/chunks/0tfjf78scu61b.js","/_next/static/immutable/chunks/31xnvej4n1bi9.js"],"default"] 1a:Tf75,

Sample concentrations were determined on a weight basis. Data for dissolved Y, Cd, La, Pb, Mn, Fe, Co, Ni, Cu, Zn and Ga are presented in concentrations units of pmol/kg (Y, Cd, La, Pb, Ga) or nmol/kg (Mn, Fe, Ni, Cu, Zn).
UV oxidization of the samples prior to extraction was necessary for dissolved Co and Cu. Samples were analyzed with and without prior treatment by UV oxidation. Only the UV-treated sample data should be used for dissolved Co and Cu. For the other trace elements, all the data was averaged.

On the GEOTRACES 2011 cruise (Stations 10, 12 and 20), some sporadic contamination of Cu, Zn and Ni was observed. The contamination problem for Cu was the worst and it occurred at roughly a constant ratio of Cu:Ni:Zn. Samples with obvious Cu contamination were eliminated from the Corrected UV data sets. Samples that were obviously significantly contaminated for Cu also showed significant Zn and Ni contamination and were eliminated from the corrected Zn and Ni average data sets.

Data for the SAFe and GEOTRACES Reference Samples are included with each data set submitted along with blanks and detection limits.

Related references:

Cutter, G.A. and K.W. Bruland. Rapid and non-contaminating sampling system for trace elements in global ocean surveys. Limnology and Oceanography: Methods, 10: 425-436 (2012).

Biller, D.V. and K.W. Bruland. Analysis of Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb in seawater using the Nobias-chelate PA1 resin and magnetic sector inductively coupled plasma mass spectrometry. Marine Chemistry, 130/131: 12-20 (2012).

Additional GEOTRACES Processing: After the data were submitted to the International Data Management Office, BODC, the office noticed that important identifying information was missing in many datasets. With the agreement of BODC and the US GEOTRACES lead PIs, BCO-DMO added standard US GEOTRACES information, such as the US GEOTRACES event number, to each submitted dataset lacking this information. To accomplish this, BCO-DMO compiled a 'master' dataset composed of the following parameters: station_GEOTRC, cast_GEOTRC (bottle and pump data only), event_GEOTRC, sample_GEOTRC, sample_bottle_GEOTRC (bottle data only), bottle_GEOTRC (bottle data only), depth_GEOTRC_CTD (bottle data only), depth_GEOTRC_CTD_rounded (bottle data only), BTL_ISO_DateTime_UTC (bottle data only), and GeoFish_id (GeoFish data only). This added information will facilitate subsequent analysis and inter comparison of the datasets.

Bottle parameters in the master file were taken from the GT-C_Bottle_GT10, GT-C_Bottle_GT11, ODF_Bottle_GT10, and ODF_Bottle_GT11 datasets. Non-bottle parameters, including those from GeoFish tows, Aerosol sampling, and McLane Pumps, were taken from the Event_Log_GT10 and Event_Log_GT11 datasets. McLane pump cast numbers missing in event logs were taken from the Particulate Th-234 dataset submitted by Ken Buesseler.

A standardized BCO-DMO method (called “join”) was then used to merge the missing parameters to each US GEOTRACES dataset, most often by matching on sample_GEOTRC or on some unique combination of other parameters.

If the master parameters were included in the original data file and the values did not differ from the master file, the original data columns were retained and the name of the parameters were changed from the PI-submitted names to the standardized master names. If there were differences between the PI-supplied parameter values and those in the master file, both columns were retained. If the original data submission included all of the master parameters, no additional columns were added, but parameter names were modified to match the naming conventions of the master file.

See the dataset parameters documentation for a description of which parameters were supplied by the PI and which were added via the join method.

1b:T12bf,Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office. The 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. It 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. Figure 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] Hydrography, 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. The North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2). KN199-04 Cruise Report (PDF) Figure 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] The section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3). KN204-01A,B Cruise Report (PDF) Figure 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] Data 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 ADCP 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)6:["$","$L19",null,{"dataset":{"_id":"3843","description":"

Trace metal profile data for two stations (7 and 9) during the US GEOTRACES North Atlantic zonal transect in 2010 (GT-10) and for three super stations (10, 12 and 20) during the US GEOTRACES North Atlantic zonal transect in 2011 (GT-11).

Version 2015-02-04: revised sample numbers for KN204, sta.10, cast 1, depths 40, 65 84, 96 from 6890, 6892, 6894, and 6896 to 6790, 6792, 6794, and 6796.
\nVersion 2013-01-10: original version

\n","problem":"","acquisition":"

Samples were collected with the US GEOTRACES clean rosette sampling system. Samples were filtered through 0.2 micrometer pore size Acropak capsule filters. Samples were stored in 0.5 L conventional polyethylene bottles acidified with 2 mL of 6 N Q-HCl to a pH of ~1.7.

In the lab at UCSC the samples were extracted off-line in an 8-channel manifold extraction system using Nobias PA-1 chelating resin (Biller and Bruland, 2012) with a slight modification of adding fluoride ion to the sample and HF to the eluant Q-nitric acid (Middag et al., in prep).
\n

\n","processing":"$1a","bcodmoProcessing":"","title":"Trace element profiles from GT-10 and GT-11 from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)","nickname":"GT10-11 - Trace Element Profiles","dataUrl":"","currentState":"Final no updates expected","currentStateId":"7","validated":true,"restricted":false,"version":"2015-02-04","version_date":"2015-02-04T05:00:00.000Z","abstract":"","citation":"Bruland, K. W. (2015) Trace element profiles from GT-10 and GT-11 from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2015-02-04) Version Date 2015-02-04 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3843 [access date]","citationParts":{"identifier":"http://lod.bco-dmo.org/id/dataset/3843","versionDate":"2015-02-04","versionId":"2015-02-04","year":"2015","title":"Trace element profiles from GT-10 and GT-11 from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)","authors":"Bruland, K. W.","publisher":"Biological and Chemical Oceanography Data Management Office (BCO-DMO)."},"doi":"","release_date":null,"field_dataset_location":"","temporal_extent":{"start":null,"end":null},"temporal":{"resolution":"","type":"","start":{"value":"","label":""},"end":{"value":"","label":""}},"spatial_extent":{"shape":"polygon","center":{"latitude":24.55115,"longitude":-41.21175},"wkt":" POLYGON((-64.1732 17.3502, -18.2503 17.3502, -18.2503 31.7521, -64.1732 31.7521, -64.1732 17.3502))","north":31.7521,"east":-18.2503,"south":17.3502,"west":-64.1732},"dataset_type":["Unknown"],"keywords":["oceans"],"data_files":[{"id":"899763","title":"GT10-11_trace_Bruland_joined.csv","url":"https://datadocs.bco-dmo.org/dataset/3843/file/k66gxqrhqwVYky/GT10-11_trace_Bruland_joined.csv","showTableUrl":"https://www.bco-dmo.org/dataset/3843/data/view/899763","description":"Primary data file for dataset ID 3843","filename":"GT10-11_trace_Bruland_joined.csv","bytesize":31903,"checksum":{"value":"306e33f06e3253a2f5bbf0d8c518a7da","Algorithm":{"_id":"190","name":"MD5"}},"mimetype":"text/csv","fileType":{"_id":"192","name":"Comma Separated Values (.csv)"},"isErddap":"","date":"","isPublicDuringEmbargo":false,"primaryDataFile":true,"showTable":true,"restricted":false}],"supplemental_files":[],"roles":[{"role":{"_id":"138","name":"Principal Investigator"},"performedBy":{"_id":"50662","name":"Kenneth W. Bruland"},"performedAtOrganization":{"_id":"120","name":"University of California-Santa Cruz"}},{"role":{"_id":"145","name":"BCO-DMO Data Manager"},"performedBy":{"_id":"50396","name":"Nancy Copley"},"performedAtOrganization":{"_id":"191","name":"Woods Hole Oceanographic Institution"}}],"deployments":[{"_id":"58066","name":"KN199-04","synonyms":["GA03","GT10","USGT-NAT-2010","KN199-4","GNAT","U.S. GEOTRACES NAZT Leg 1","knorr199-4/5","Section Cruise (GA03)","316N20101015"],"dates":{"start":"2010-10-15T00:00:00.000Z","end":"2010-11-04T00:00:00.000Z"},"platform":{"_id":"53994","name":"R/V Knorr"},"chiefScientists":[{"id":"50745","name":"William J. Jenkins","role":"Chief Scientist"},{"id":"50984","name":"Edward A. Boyle","role":"Co-Chief Scientist"},{"id":"50679","name":"Gregory A. Cutter","role":"Co-Chief Scientist"}]},{"_id":"58786","name":"KN204-01","synonyms":["GA03","GT11","KN204-01A","KN204-01B","USGT-NAT-2011","USGNAZT","GNAT","316N20111106","KN204-1"],"dates":{"start":"2011-11-06T00:00:00.000Z","end":"2011-12-11T00:00:00.000Z"},"platform":{"_id":"53994","name":"R/V Knorr"},"chiefScientists":[{"id":"50984","name":"Edward A. Boyle","role":"Chief Scientist"},{"id":"50679","name":"Gregory A. Cutter","role":"Co-Chief Scientist"}]}],"funding":[{"_id":"55135","name":"OCE-0961579","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=0961579"}],"instruments":[{"_id":"5990","name":"CTD profiler","description":"","type_id":"417","type_name":"CTD - profiler","type_desc":"The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.\r\n\r\nThis term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934.","type_acronym":""},{"_id":"6043","name":"GeoFish","description":"","type_id":"549","type_name":"GeoFish Towed near-Surface Sampler","type_desc":"The GeoFish towed sampler is a custom designed near surface (2 meters or less) sampling system for the collection of trace metal clean seawater. It consists of a PVC encapsulated lead weighted torpedo and separate PVC depressor vane supporting the intake utilizing all PFA Teflon tubing connected to a deck mounted, air-driven, PFA Teflon dual-diaphragm pump which provides trace-metal clean seawater at up to 3.7L/min. The GeoFish is towed at up to 13kts off to the side of the vessel outside of the ship's wake to avoid possible contamination from the ship's hull. It was developed by Geoffrey Smith and Ken Bruland (University of California, Santa Cruz).","type_acronym":"GeoFish"},{"_id":"6000","name":"GO-FLO Teflon Trace Metal","description":"","type_id":"533","type_name":"GO-FLO Teflon Trace Metal Bottle","type_desc":"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.","type_acronym":"GO-FLO Teflon TM"},{"_id":"6025","name":"Mass Spectrometer","description":"XR High Resolution Magnetic SectorICP-MS","type_id":"685","type_name":"Mass Spectrometer","type_desc":"General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components.","type_acronym":"Mass Spec"}],"parameters":[{"_id":"31966","name":"cruise_id","format":"","frictionlessType":"","description":"

Official cruise identifier e.g. KN199-04 = R/V Knorr cruise number 199-04.

","units":{"_id":"","name":"text"},"type":{"_id":"1102","name":"cruise_id","description":"

cruise designation; name

"}},{"_id":"31967","name":"station_GEOTRC","format":"","frictionlessType":"","description":"

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 'sta', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.

","units":{"_id":"","name":"integer"},"type":{"_id":"987","name":"station","description":"

Station identifier; a unique number or alphanumeric string designating a general geographic location at which one or more sampling activities may occur.

"}},{"_id":"31968","name":"cast_GEOTRC","format":"","frictionlessType":"","description":"

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.

","units":{"_id":"","name":"integer"},"type":{"_id":"761","name":"cast","description":"

cast or profile number

"}},{"_id":"31969","name":"date","format":"","frictionlessType":"","description":"

sample date, UTC

","units":{"_id":"","name":"YYYYMMDD"},"type":{"_id":"798","name":"date_utc","description":"

UTC month, day and year, usually as a text string, e.g. feb10_1995. It is better to use one of the other forms of presenting date and time data so that the data can be used in computations and for comparisons. Note, if the string begins with numbers but also includes letters, there may be problems using the field name for retrieval. Use date_gmt for future data sets.

"}},{"_id":"31970","name":"lat","format":"","frictionlessType":"","description":"

latitude; north is positive

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"730","name":"latitude","description":"

latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes

"}},{"_id":"31971","name":"lon","format":"","frictionlessType":"","description":"

longitude; east is positive

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"731","name":"longitude","description":"

longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes

"}},{"_id":"31972","name":"depth_n","format":"","frictionlessType":"","description":"

nominal sample depth

","units":{"_id":"","name":"meters"},"type":{"_id":"1139","name":"depth_n","description":"

depth; nominal

"}},{"_id":"31973","name":"sample_GEOTRC","format":"","frictionlessType":"","description":"

Unique identification numbers given to samples taken from bottles; rangies from 1 to 24; often used synonymously with bottle number. 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.

","units":{"_id":"","name":"text"},"type":{"_id":"960","name":"sample","description":"

unique sample identification or number; any combination of alpha numeric characters; precise definition is file dependent

"}},{"_id":"31974","name":"bottle","format":"","frictionlessType":"","description":"

bottle identification

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"757","name":"bottle","description":"

water bottle number, generally assigned to a position on a CTD rosette, identifies all samples drawn from a given bottle

"}},{"_id":"31975","name":"Y_pmol","format":"","frictionlessType":"","description":"

average concentration of Yttrium in sample

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31976","name":"Y_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Yttrium subsample concentration

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31977","name":"Cd_pmol","format":"","frictionlessType":"","description":"

average concentration of Cadmium in sample

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31978","name":"Cd_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Cadmium subsample concentration

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31979","name":"La_pmol","format":"","frictionlessType":"","description":"

average concentration of Lanthanum in sample

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31980","name":"La_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Lanthanum subsample concentration

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31981","name":"Pb_pmol","format":"","frictionlessType":"","description":"

average concentration of Lead in sample

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31982","name":"Pb_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Lead subsample concentration

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31983","name":"Mn_nmol","format":"","frictionlessType":"","description":"

average concentration of Manganese in sample

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31984","name":"Mn_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Manganese subsample concentration

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31985","name":"Fe_nmol","format":"","frictionlessType":"","description":"

average concentration of Iron in sample

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31986","name":"Fe_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Iron subsample concentration

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31987","name":"Ni_nmol","format":"","frictionlessType":"","description":"

average concentration of Nickel in sample

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31988","name":"Ni_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Nickel subsample concentration

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31989","name":"Zn_nmol","format":"","frictionlessType":"","description":"

average concentration of Zinc in sample

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31990","name":"Zn_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Zinc subsample concentration

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31991","name":"Ga_pmol","format":"","frictionlessType":"","description":"

average concentration of Gallium in sample

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31992","name":"Ga_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Gallium subsample concentration

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31993","name":"Co_pmol","format":"","frictionlessType":"","description":"

average concentration of Cobalt in sample

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31994","name":"Co_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Cobalt subsample concentration

","units":{"_id":"","name":"picomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"31995","name":"Cu_nmol","format":"","frictionlessType":"","description":"

average concentration of Copper in sample

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1945","name":"trace_metal_conc","description":"

Concentration of a trace metal in seawater. Refer to dataset for element name and units.

"}},{"_id":"31996","name":"Cu_std_dev","format":"","frictionlessType":"","description":"

standard deviation of Copper subsample concentration

","units":{"_id":"","name":"nanomoles/kilogram"},"type":{"_id":"1946","name":"trace_metal_sd","description":"

Standard deviation reported for the concentration of a trace metal in seawater. Refer to dataset for element and units.

"}},{"_id":"33166","name":"bottle_GEOTRC","format":"","frictionlessType":"","description":"

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).

","units":{"_id":"","name":"dimensionless"},"type":{"_id":"757","name":"bottle","description":"

water bottle number, generally assigned to a position on a CTD rosette, identifies all samples drawn from a given bottle

"}},{"_id":"33167","name":"event_GEOTRC","format":"","frictionlessType":"","description":"

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. Values were added from the intermediate US GEOTRACES master file (see Processing Description).

","units":{"_id":"","name":"dimensionless"},"type":{"_id":"829","name":"event","description":"

Event or operation identifier; event or operation number; often derived from date/time (MMDDHHmm) of sampling and when combined with year (YYYY) is a unique sampling identifier/data processing key. Date/time is not necessarily in GMT.

"}},{"_id":"33168","name":"sample_bottle_GEOTRC","format":"","frictionlessType":"","description":"

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).

","units":{"_id":"","name":"dimensionless"},"type":{"_id":"960","name":"sample","description":"

unique sample identification or number; any combination of alpha numeric characters; precise definition is file dependent

"}},{"_id":"33169","name":"depth_GEOTRC_CTD","format":"","frictionlessType":"","description":"

Observation/sample depth in meters; calculated from CTD pressure. Values were added from the intermediate US GEOTRACES master file (see Processing Description).

","units":{"_id":"","name":"meters"},"type":{"_id":"808","name":"depth","description":"

Observation/sample depth below the sea surface. Units often reported as: meters, feet.

\nWhen used in a JGOFS/GLOBEC dataset the depth is a best estimate; usually but not always calculated from pressure; calculated either from CTD pressure using Fofonoff and Millard (1982; UNESCO Tech Paper #44) algorithm adjusted for 1980 equation of state for seawater (EOS80) or simply equivalent to nominal depth as recorded during sampling if CTD pressure was unavailable.

"}},{"_id":"33170","name":"BTL_ISO_DateTime_UTC","format":"","frictionlessType":"","description":"

Date and time (UTC) variable recorded at the bottle sampling time in ISO compliant format. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
This standard is based on ISO 8601:2004(E) and takes on the following form:
2009-08-30T14:05:00[.xx]Z (UTC time)

","units":{"_id":"","name":"YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]"},"type":{"_id":"1908","name":"ISO_DateTime_UTC","description":"

Date/Time (UTC) ISO formatted
\nThis standard is based on ISO 8601:2004(E) and takes on any of the following forms:
\n2009-08-30T09:05:00[.xx] (local time)
\n2009-08-30T14:05:00[.xx]Z (UTC time)
\n2009-08-30T14:05:00[.xx]-05:00
\nThe dashes and the colons can be dropped.
\nThe T can also be dropped \"by mutual agreement\", but one needs the trailing Z if the time is UTC.

Sample ISO_datetime_utc:
\n2009-08-30T14:05:00[.xx]Z (UTC time)

Format: YYYY-mm-ddTHH:MM:SS[.xx]Z (UTC time)

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