Accessing BCO-DMO data
log in    
Brought to you by BCO-DMO    

ERDDAP > info > bcodmo_dataset_3905

Title Sum-
Institution Dataset ID
     data   graph     files  public delta 13C measurement of dissolved inorganic carbon (DIC) from R/V Knorr cruises KN199-04 and
KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
   ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_3905

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 Shipboard Sample Collection Methods
Samples are collected in pre-washed and baked 250 ml ground glass stoppered
bottles that were poisoned with 100\u00b5l of a saturated HgCl2 solution. The
stored sealed samples were returned to the Stable Isotope Laboratory at the
University of Washington for extraction and measurement.

Laboratory Methods
CO2 is extracted from the DIC seawater sample using a modification of the
helium stripping technique described in Quay et al (1992). The del13C is
measured on a Thermo Delta Plus XL mass spectrometer.
attribute NC_GLOBAL awards_0_award_nid String 55170
attribute NC_GLOBAL awards_0_award_number String OCE-0926213
attribute NC_GLOBAL awards_0_data_url String http://nsf.gov/awardsearch/showAward?AWD_ID=0926213 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Donald L. Rice
attribute NC_GLOBAL awards_0_program_manager_nid String 51467
attribute NC_GLOBAL awards_1_award_nid String 55171
attribute NC_GLOBAL awards_1_award_number String OCE-1137455
attribute NC_GLOBAL awards_1_data_url String http://nsf.gov/awardsearch/showAward?AWD_ID=1137455 (external link)
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 Donald L. Rice
attribute NC_GLOBAL awards_1_program_manager_nid String 51467
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String delta 13C (ratio of 13C:12C) from GT10 and GT11
PI: Paul Quay (University of Washington)
Version History:
17 June 2014 = data updated/corrections made (current version)
04 April 2013 = original data submitted
Note: Surface samples collected at stations through sample clean
seawater feed have no cast and sample numbers.
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2013-04-05T15:22:45Z
attribute NC_GLOBAL date_modified String 2020-03-30T20:48:45Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.26008/1912/bco-dmo.3905.2
attribute NC_GLOBAL Easternmost_Easting double -9.66
attribute NC_GLOBAL geospatial_lat_max double 39.7
attribute NC_GLOBAL geospatial_lat_min double 17.349
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -9.66
attribute NC_GLOBAL geospatial_lon_min double -69.86
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 5815.3
attribute NC_GLOBAL geospatial_vertical_min double 9.5
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/3905 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String IR Mass Spec
attribute NC_GLOBAL instruments_0_dataset_instrument_description String The del13C is measured on a Thermo Delta Plus XL mass spectrometer.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 6120
attribute NC_GLOBAL instruments_0_description String The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB16/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Isotope-ratio Mass Spectrometer
attribute NC_GLOBAL instruments_0_instrument_nid String 469
attribute NC_GLOBAL instruments_0_supplied_name String Isotope-ratio Mass Spectrometer
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, bottle, bottle_GEOTRC, btl, BTL_ISO_DateTime_UTC, cast, cast_GEOTRC, chemical, cruise, cruise_id, cruise_name, data, dataset, date, day, delta13, delta13C, delta13C_flag, depth, depth_GEOTRC_CTD, dmo, erddap, event, event_GEOTRC, flag, geotrc, iso, lat_nom, latitude, lon_nom, longitude, management, month, name, oceanography, office, preliminary, sample, sample_bottle_GEOTRC, sample_GEOTRC, station, station_GEOTRC, time, year
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/3905/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/3905 (external link)
attribute NC_GLOBAL Northernmost_Northing double 39.7
attribute NC_GLOBAL param_mapping String {'3905': {'depth_GEOTRC_CTD': 'flag - depth', 'lat': 'flag - latitude', 'BTL_ISO_DateTime_UTC': 'flag - time', 'lon': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/3905/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of Washington
attribute NC_GLOBAL people_0_affiliation_acronym String UW
attribute NC_GLOBAL people_0_person_name String Paul Quay
attribute NC_GLOBAL people_0_person_nid String 50590
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 Washington
attribute NC_GLOBAL people_1_affiliation_acronym String UW
attribute NC_GLOBAL people_1_person_name String Johnny Stutsman
attribute NC_GLOBAL people_1_person_nid String 51670
attribute NC_GLOBAL people_1_role String Contact
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Shannon Rauch
attribute NC_GLOBAL people_2_person_nid String 51498
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 17.349
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String delta 13C measurements made on dissolved inorganic carbon (DIC) samples collected at stations during the GT10 and GT11 (KN199-04 and KN204-01) cruises as part of the U.S. GEOTRACES North Atlantic Transect project.
attribute NC_GLOBAL time_coverage_start String 2010-10-16T21:32:00Z
attribute NC_GLOBAL title String delta 13C measurement of dissolved inorganic carbon (DIC) from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
attribute NC_GLOBAL version String 2
attribute NC_GLOBAL Westernmost_Easting double -69.86
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable cruise_id   String  
attribute cruise_id bcodmo_name String cruise_id
attribute cruise_id description String 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 cruise_name   String  
attribute cruise_name bcodmo_name String Cruise Name
attribute cruise_name description String GEOTRACES cruise identifier.
attribute cruise_name long_name String Cruise Name
attribute cruise_name units String dimensionless
variable station_GEOTRC   byte  
attribute station_GEOTRC _FillValue byte 127
attribute station_GEOTRC actual_range byte 1, 24
attribute station_GEOTRC bcodmo_name String station
attribute station_GEOTRC description String GEOTRACES station number; ranges from 1 through 12 for KN199-04 and 1 through 24 for KN204-01. Stations 7 and 9 were skipped on KN204-01. PI-supplied values were identical to those in the
intermediate US GEOTRACES master file. Originally submitted as 'Station', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
attribute station_GEOTRC long_name String Station GEOTRC
attribute station_GEOTRC units String dimensionless
variable lat_nom   float  
attribute lat_nom _FillValue float NaN
attribute lat_nom actual_range float 17.35, 39.7
attribute lat_nom bcodmo_name String lat_n
attribute lat_nom colorBarMaximum double 90.0
attribute lat_nom colorBarMinimum double -90.0
attribute lat_nom description String Nominal latitude of station. BCO-DMO added from station waypoints provided by Chief Sci.
attribute lat_nom long_name String Latitude
attribute lat_nom standard_name String latitude
attribute lat_nom units String decimal degrees
variable lon_nom   float  
attribute lon_nom _FillValue float NaN
attribute lon_nom actual_range float -69.8, -9.66
attribute lon_nom bcodmo_name String lon_n
attribute lon_nom colorBarMaximum double 180.0
attribute lon_nom colorBarMinimum double -180.0
attribute lon_nom description String Nominal longitude of station. BCO-DMO added from station waypoints provided by Chief Sci.
attribute lon_nom long_name String Longitude
attribute lon_nom standard_name String longitude
attribute lon_nom units String decimal degrees
variable depth   double  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 9.5, 5815.3
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 Observation/sample depth in meters, calculated from CTD pressure. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
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 cast_GEOTRC   byte  
attribute cast_GEOTRC _FillValue byte 127
attribute cast_GEOTRC actual_range byte 1, 10
attribute cast_GEOTRC bcodmo_name String cast
attribute cast_GEOTRC description String Cast identifier, numbered consecutively within a station. PI-supplied values were identical to those in the intermediate US GEOTRACES master file. Originally submitted as 'Cast', this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions.
attribute cast_GEOTRC long_name String Cast GEOTRC
attribute cast_GEOTRC units String dimensionless
variable sample_bottle_GEOTRC   byte  
attribute sample_bottle_GEOTRC _FillValue byte 127
attribute sample_bottle_GEOTRC actual_range byte 1, 12
attribute sample_bottle_GEOTRC bcodmo_name String bot_Nis
attribute sample_bottle_GEOTRC description String 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.
attribute sample_bottle_GEOTRC long_name String Sample Bottle GEOTRC
attribute sample_bottle_GEOTRC units String dimensionless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 17.349, 39.7
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude ranging from 0 to +/- 180.
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 -69.86, -9.66
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 ranging from 0 to +/- 180. Negative values = West.
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 month   String  
attribute month bcodmo_name String month_utc
attribute month description String 2-digit month of year (UTC). in the format mm (01 to 12)
attribute month long_name String Month
attribute month units String unitless
variable day   String  
attribute day bcodmo_name String day_gmt
attribute day description String 2-digit day of month (UTC). in the format dd (01 to 31)
attribute day long_name String Day
attribute day units String unitless
variable year   short  
attribute year _FillValue short 32767
attribute year actual_range short 2010, 2011
attribute year bcodmo_name String year
attribute year description String 4-digit year (UTC). in the format YYYY
attribute year long_name String Year
attribute year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
attribute year units String unitless
variable delta13C   float  
attribute delta13C _FillValue float NaN
attribute delta13C actual_range float -0.37, 1.72
attribute delta13C bcodmo_name String delta13C
attribute delta13C description String A measure of the ratio of stable isotopes 13C:12C, reported in parts per thousand (per mil, o/oo) reported vs PDB.
attribute delta13C long_name String Delta13 C
attribute delta13C nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/D13CMITX/ (external link)
attribute delta13C units String per mil
variable delta13C_flag   byte  
attribute delta13C_flag _FillValue byte 127
attribute delta13C_flag actual_range byte 2, 9
attribute delta13C_flag bcodmo_name String q_flag
attribute delta13C_flag colorBarMaximum double 150.0
attribute delta13C_flag colorBarMinimum double 0.0
attribute delta13C_flag description String Quality flag for delta13C.
2 = good data
3 = questionable data
9 = no data
attribute delta13C_flag long_name String Delta13 C Flag
attribute delta13C_flag units String dimensionless
variable event_GEOTRC   short  
attribute event_GEOTRC _FillValue short 32767
attribute event_GEOTRC actual_range short 2020, 3281
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 sample_GEOTRC   short  
attribute sample_GEOTRC _FillValue short 32767
attribute sample_GEOTRC actual_range short 5075, 8140
attribute sample_GEOTRC bcodmo_name String sample
attribute sample_GEOTRC description String Unique identifying number for US GEOTRACES samples; ranges from 5033 to 6078 for KN199-04 and from 6112 to 8148 for KN204-01. Values were added from the intermediate US GEOTRACES master file (see Processing Description).
attribute sample_GEOTRC long_name String Sample GEOTRC
attribute sample_GEOTRC nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute sample_GEOTRC units String dimensionless
variable bottle_GEOTRC   String  
attribute bottle_GEOTRC bcodmo_name String bot
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 time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.28726472E9, 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)
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.

ERDDAP, Version 2.02
Disclaimers | Privacy Policy | Contact