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Title Sum-
Institution Dataset ID
   set  data   graph     files  public Particulate organic carbon (POC) and nitrogen (PON) along US GEOTRACES North Atlantic
Transect from the R/V Knorr KN199-04 cruise in the subtropical N. Atlantic from 2010 (U.S.
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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 Sampling Excerpt from associated file: Determination of Carbon and Nitrogen
collected on Whatman glass fiber filters (GFF)

Water samples are filtered through 2.5 cm pre-combusted Whatman GFF filters
using an all-glass filtering funnel. Once enough material has been accumulated
on the filter the samples are stored in Nalgene 1.8 mL cryovials at -80\u00b0C
until analysis. For shipping, samples are stored in liquid nitrogen dry-
shippers. Prior to analysis samples are thawed and dried overnight at
65\u00b0C inside the uncapped cryovials. Dry samples in the uncapped vials are
transferred overnight to a desiccator saturated with HCl fumes to remove
particulate inorganic carbon present in the sample. The air in the desiccator
is kept saturated by leaving concentrated HCl in an open container in the
lower compartment of the desiccator. Acid\u2013treated samples are transferred
back to a 65\u00b0C oven overnight, after which can be stored capped in
cryovials for extended periods prior to analysis in elemental analyzer.

For analysis the samples are wrapped in tin foil discs (PE N241-1363) and
pelletized on a Parr Pellet press.

The samples are analyzed in the Perkin Elmer CHNS/O Analyzer 2400 Series II.
The manufacturer\u2019s data management software for the elemental analyzer is
set up so that the analysis report includes the zero read (ZR), and the carbon
and nitrogen signals (CS, NS) from the instrument for each analyzed sample.

For complete analysis and processing details, see the Supplemental Document:
Determination of Carbon and Nitrogen collected on Whatman glass fiber filters
attribute NC_GLOBAL awards_0_award_nid String 55148
attribute NC_GLOBAL awards_0_award_number String NNX09AN94G
attribute NC_GLOBAL awards_0_funder_name String National Aeronautics & Space Administration
attribute NC_GLOBAL awards_0_funding_acronym String NASA
attribute NC_GLOBAL awards_0_funding_source_nid String 353
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Particulate Organic Carbon and Nitrogen data from the GT10 cruise KN199-04
PIs: Joaquin Chaves and Charles McClain (both NASA)
Version: 20130109
Samples from station 1 were collected with WHOI's GEOTRACES pump.
Samples from station numbers > 1 were collected with NASA's
surface peristaltic pump.
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL dataset_current_state String Final and no updates
attribute NC_GLOBAL date_created String 2013-01-10T17:24:48Z
attribute NC_GLOBAL date_modified String 2020-05-01T17:23:53Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.26008/1912/bco-dmo.3851.1
attribute NC_GLOBAL Easternmost_Easting double -9.6604
attribute NC_GLOBAL geospatial_lat_max double 38.3296
attribute NC_GLOBAL geospatial_lat_min double 17.3581
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -9.6604
attribute NC_GLOBAL geospatial_lon_min double -24.4962
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 0.0
attribute NC_GLOBAL geospatial_vertical_min double 0.0
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/3851 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Pump surface
attribute NC_GLOBAL instruments_0_dataset_instrument_description String NASA's surface peristaltic pump was used to collect some samples.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 6023
attribute NC_GLOBAL instruments_0_description String A source of uncontaminated near-surface seawater pumped onto the deck of the research vessel that can be sampled and analyzed. This pumped seawater supply is from an over-the-side pumping system, and is therefore different from the vessel underway seawater system.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/31/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Pump surface
attribute NC_GLOBAL instruments_0_instrument_nid String 619
attribute NC_GLOBAL instruments_0_supplied_name String Pump surface
attribute NC_GLOBAL instruments_1_acronym String CHN_EA
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Perkin Elmer CHNS/O Analyzer 2400 Series II:
The PE 2400 is a commercially available elemental analyzer that uses a combustion method to convert the sample elements to simple gases (CO2, H2O, and N2). The sample is first oxidized in a pure oxygen environment. Elements such as halogens and sulfur are removed by scrubbing reagents in the combustion zone. The resulting gases are homogenized and controlled to exact conditions of pressure, temperature, and volume. The homogenized gases are allowed to de-pressurize trough a column where they are separated in a stepwise, steady-state manner and measured as a function of their thermal conductivities.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 6024
attribute NC_GLOBAL instruments_1_description String A CHN Elemental Analyzer is used for the determination of carbon, hydrogen, and nitrogen content in organic and other types of materials, including solids, liquids, volatile, and viscous samples.
attribute NC_GLOBAL instruments_1_instrument_name String CHN Elemental Analyzer
attribute NC_GLOBAL instruments_1_instrument_nid String 625
attribute NC_GLOBAL instruments_1_supplied_name String CHN Elemental Analyzer
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, bottle, bottle_GEOTRC, btl, BTL_ISO_DateTime_UTC, carbon, cast, cast_GEOTRC, chemical, cruise, cruise_id, data, dataset, date, date_gmt, depth, depth_GEOTRC_CTD, dmo, erddap, event, event_GEOTRC, geotrc, iso, latitude, longitude, management, oceanography, office, organic, particulate, poc, POC_sd, pon, PON_sd, preliminary, replicate, sample, sample_bottle_GEOTRC, sample_GEOTRC, station, station_GEOTRC, time, time_gmt, yrday, yrday_gmt
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/3851/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/3851 (external link)
attribute NC_GLOBAL Northernmost_Northing double 38.3296
attribute NC_GLOBAL param_mapping String {'3851': {'lat': 'flag - latitude', 'depth': 'flag - depth', 'BTL_ISO_DateTime_UTC': 'flag - time', 'lon': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/3851/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String National Aeronautics and Space Administration
attribute NC_GLOBAL people_0_affiliation_acronym String NASA
attribute NC_GLOBAL people_0_person_name String Joaquin Chaves
attribute NC_GLOBAL people_0_person_nid String 51637
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 National Aeronautics and Space Administration
attribute NC_GLOBAL people_1_affiliation_acronym String NASA
attribute NC_GLOBAL people_1_person_name String Charles McClain
attribute NC_GLOBAL people_1_person_nid String 50549
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 Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Danie Kinkade
attribute NC_GLOBAL people_2_person_nid String 51549
attribute NC_GLOBAL people_2_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String U.S. GEOTRACES NAT
attribute NC_GLOBAL projects_0_acronym String U.S. GEOTRACES NAT
attribute NC_GLOBAL projects_0_description String Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.
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)
attribute NC_GLOBAL projects_0_end_date String 2013-08
attribute NC_GLOBAL projects_0_geolocation String Subtropical western and eastern North Atlantic Ocean
attribute NC_GLOBAL projects_0_name String U.S. GEOTRACES North Atlantic Transect
attribute NC_GLOBAL projects_0_project_nid String 2066
attribute NC_GLOBAL projects_0_project_website String http://www.geotraces.org/ (external link)
attribute NC_GLOBAL projects_0_start_date String 2010-10
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 17.3581
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String cruise_id,depth,replicate
attribute NC_GLOBAL summary String Particulate organic carbon (POC) and nitrogen (PON) along US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04 cruise in the subtropical N. Atlantic from 2010.
attribute NC_GLOBAL time_coverage_start String 2010-10-18T10:11:00Z
attribute NC_GLOBAL title String Particulate organic carbon (POC) and nitrogen (PON) along US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04 cruise in the subtropical N. Atlantic from 2010 (U.S. GEOTRACES NAT project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -24.4962
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.5
variable cruise_id   String  
attribute cruise_id bcodmo_name String cruise_id
attribute cruise_id description String Official cruise identifier e.g. KN199-04 = R/V Knorr cruise number 199-04.
attribute cruise_id long_name String Cruise Id
attribute cruise_id units String dimensionless
variable station_GEOTRC   byte  
attribute station_GEOTRC _FillValue byte 127
attribute station_GEOTRC actual_range byte 1, 12
attribute station_GEOTRC bcodmo_name String station
attribute station_GEOTRC description String GEOTRACES station number; ranges from 1 through 12 for KN199-04 and 1 through 24 for KN204-01. Stations 7 and 9 were skipped on KN204-01. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'station', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
attribute station_GEOTRC long_name String Station GEOTRC
attribute station_GEOTRC units String dimensionless
variable cast_GEOTRC   byte  
attribute cast_GEOTRC _FillValue byte 127
attribute cast_GEOTRC actual_range byte 1, 5
attribute cast_GEOTRC bcodmo_name String cast
attribute cast_GEOTRC description String Cast identifier numbered consecutively within a station. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute cast_GEOTRC long_name String Cast GEOTRC
attribute cast_GEOTRC units String dimensionless
variable event_GEOTRC   short  
attribute event_GEOTRC _FillValue short 32767
attribute event_GEOTRC actual_range short 2042, 2220
attribute event_GEOTRC bcodmo_name String event
attribute event_GEOTRC description String Unique identifying number for US GEOTRACES sampling events; ranges from 2001 to 2225 for KN199-04 events and from 3001 to 3282 for KN204-01 events. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute event_GEOTRC long_name String Event GEOTRC
attribute event_GEOTRC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)
attribute event_GEOTRC units String dimensionless
variable bottle_GEOTRC   String  
attribute bottle_GEOTRC bcodmo_name String bottle
attribute bottle_GEOTRC description String Alphanumeric characters identifying bottle type (e.g. NIS representing Niskin and GF representing GOFLO) and position on a CTD rosette. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute bottle_GEOTRC long_name String Bottle GEOTRC
attribute bottle_GEOTRC units String dimensionless
variable sample_bottle_GEOTRC   byte  
attribute sample_bottle_GEOTRC _FillValue byte 127
attribute sample_bottle_GEOTRC actual_range byte 13, 13
attribute sample_bottle_GEOTRC bcodmo_name String sample
attribute sample_bottle_GEOTRC description String Unique identification numbers given to samples taken from bottles; ranges from 1 to 24; often used synonymously with bottle number. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute sample_bottle_GEOTRC long_name String Sample Bottle GEOTRC
attribute sample_bottle_GEOTRC nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute sample_bottle_GEOTRC units String dimensionless
variable sample_GEOTRC   short  
attribute sample_GEOTRC _FillValue short 32767
attribute sample_GEOTRC actual_range short 5160, 6033
attribute sample_GEOTRC bcodmo_name String station
attribute sample_GEOTRC description String Unique identifying number for US GEOTRACES samples; ranges from 5033 to 6078 for KN199-04 and from 6112 to 8148 for KN204-01. PI-supplied values were identical to those in the intermediate US GEOTRACES master file Originally submitted as 'sample_no'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
Unique sample identifier, where sample numbers from station 1 were collected with WHOI's GEOTRACES pump and samples for stations > 1 were collected with NASA's surface peristaltic pump. Samples with a GEOTRACES sample number also had pigment samples collected, missing sample numbers (nd) did not.
attribute sample_GEOTRC long_name String Sample GEOTRC
attribute sample_GEOTRC units String dimensionless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 17.3581, 38.3296
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 component of geographic position where samples were collected.
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -24.4962, -9.6604
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 component of geographic position where samples were collected.
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable time_gmt   short  
attribute time_gmt _FillValue short 32767
attribute time_gmt actual_range short 1120, 1710
attribute time_gmt bcodmo_name String time_gmt
attribute time_gmt description String Time of sampling, reported in GMT. in the format hhmm
attribute time_gmt long_name String Time Gmt
attribute time_gmt units String unitless
variable yrday_gmt   short  
attribute yrday_gmt _FillValue short 32767
attribute yrday_gmt actual_range short 290, 306
attribute yrday_gmt bcodmo_name String yrday_gmt
attribute yrday_gmt description String Year day recorded in GMT time, where Jan 1 is day 1.
attribute yrday_gmt long_name String Yrday Gmt
attribute yrday_gmt units String unitless
variable date_gmt   int  
attribute date_gmt _FillValue int 2147483647
attribute date_gmt actual_range int 20101017, 20101102
attribute date_gmt bcodmo_name String date_gmt
attribute date_gmt description String Date, recorded in GMT time. in the format yyyymmdd
attribute date_gmt long_name String Date Gmt
attribute date_gmt units String unitless
variable depth   double  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 0.0, 0.0
attribute depth axis String Z
attribute depth bcodmo_name String depth
attribute depth colorBarMaximum double 8000.0
attribute depth colorBarMinimum double -8000.0
attribute depth colorBarPalette String TopographyDepth
attribute depth description String Sample depth in meters.
attribute depth ioos_category String Location
attribute depth long_name String Depth
attribute depth nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable POC   float  
attribute POC _FillValue float NaN
attribute POC actual_range float 31.6, 91.3
attribute POC bcodmo_name String POC
attribute POC description String Particulate organic carbon
attribute POC long_name String Particulate Organic Carbon
attribute POC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/ (external link)
attribute POC units String milligrams/m^3
variable POC_sd   float  
attribute POC_sd _FillValue float NaN
attribute POC_sd actual_range float 0.2, 18.5
attribute POC_sd bcodmo_name String particulates_sd
attribute POC_sd colorBarMaximum double 50.0
attribute POC_sd colorBarMinimum double 0.0
attribute POC_sd description String Standard deviation of POC measurements.
attribute POC_sd long_name String POC Sd
attribute POC_sd units String milligrams/m^3
variable PON   float  
attribute PON _FillValue float NaN
attribute PON actual_range float 2.8, 11.8
attribute PON bcodmo_name String PON
attribute PON description String Particulate organic nitrogen.
attribute PON long_name String PON
attribute PON nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/MDMAP013/ (external link)
attribute PON units String milligrams/m^3
variable PON_sd   float  
attribute PON_sd _FillValue float NaN
attribute PON_sd actual_range float 0.0, 5.0
attribute PON_sd bcodmo_name String particulates_sd
attribute PON_sd colorBarMaximum double 50.0
attribute PON_sd colorBarMinimum double 0.0
attribute PON_sd description String Standard deviation of PON measurements.
attribute PON_sd long_name String PON Sd
attribute PON_sd units String milligrams/m^3
variable replicate   byte  
attribute replicate _FillValue byte 127
attribute replicate actual_range byte 2, 2
attribute replicate bcodmo_name String replicate
attribute replicate description String A number indicating how many replicate samples were averaged to produce the reported value.
attribute replicate long_name String Replicate
attribute replicate units String dimensionless
variable depth_GEOTRC_CTD   float  
attribute depth_GEOTRC_CTD _FillValue float NaN
attribute depth_GEOTRC_CTD actual_range float 5.0, 5.2
attribute depth_GEOTRC_CTD bcodmo_name String depth
attribute depth_GEOTRC_CTD colorBarMaximum double 8000.0
attribute depth_GEOTRC_CTD colorBarMinimum double -8000.0
attribute depth_GEOTRC_CTD colorBarPalette String TopographyDepth
attribute depth_GEOTRC_CTD description String Observation/sample depth in meters; calculated from CTD pressure. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute depth_GEOTRC_CTD long_name String Depth
attribute depth_GEOTRC_CTD nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)
attribute depth_GEOTRC_CTD standard_name String depth
attribute depth_GEOTRC_CTD units String meters
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.28739666E9, NaN
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String 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)
format: YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]
attribute time ioos_category String Time
attribute time long_name String BTL ISO Date Time UTC
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z

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.

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