Accessing BCO-DMO data
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BCO-DMO ERDDAP
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| Dataset Title: | [Nitrate isotopes] - Nitrate dual isotope (d15N and d18O) measurements from R/ V Knorr cruise KN192-05 in the South Atlantic subtropical gyre and Benguela upwelling region in 2007 (CoFeMUG project) (Cobalt, Iron and Micro-organisms from the Upwelling zone to the Gyre) 
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| Institution: | BCO-DMO (Dataset ID: bcodmo_dataset_630246) |
| Information: | Summary
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| FGDC
| ISO 19115
| Metadata
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Attributes {
s {
cruise_id {
String bcodmo_name "cruise_id";
String description "Official cruise identifier.";
String long_name "Cruise Id";
String units "dimensionless";
}
sta {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 20;
String bcodmo_name "sta";
String description "Station number.";
String long_name "Sta";
String units "dimensionless";
}
latitude {
String _CoordinateAxisType "Lat";
Float64 _FillValue NaN;
Float64 actual_range -17.5, -11.0;
String axis "Y";
String bcodmo_name "latitude";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String description "Latitude; North is positive.";
String ioos_category "Location";
String long_name "Latitude";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LATX/";
String standard_name "latitude";
String units "degrees_north";
}
longitude {
String _CoordinateAxisType "Lon";
Float64 _FillValue NaN;
Float64 actual_range -30.0, 12.2;
String axis "X";
String bcodmo_name "longitude";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String description "Longitude; East is positive. Calculated by BCO-DMO from the original PI-provided lon_360 values.";
String ioos_category "Location";
String long_name "Longitude";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LONX/";
String standard_name "longitude";
String units "degrees_east";
}
lon_360 {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 357.5;
String bcodmo_name "lon_360";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String description "Longitude measured from 0 to 360 degrees.";
String long_name "Longitude";
String standard_name "longitude";
String units "decimal degrees";
}
press {
Float64 _FillValue NaN;
Float64 actual_range 9.0, 5106.0;
String bcodmo_name "pressure";
String description "Pressure.";
String long_name "Press";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/";
String units "decibars (db)";
}
ev_code {
String bcodmo_name "event code";
String description "Event code; type and number of sampling event; matches cruise event log.";
String long_name "Ev Code";
String units "dimensionless";
}
event {
Int32 _FillValue 2147483647;
Int32 actual_range 11180943, 12061724;
String bcodmo_name "event";
String description "Event number from the cruise event log.";
String long_name "Event";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/";
String units "dimensionless";
}
d15N_NO3 {
Float32 _FillValue NaN;
Float32 actual_range 4.5, 22.4;
String bcodmo_name "dN15_NO3";
Float64 colorBarMaximum 50.0;
Float64 colorBarMinimum 0.0;
String description "d15N-NO3 = ([15N]/[14N]NO3 / [15N]/[14N]standard -1) x 1000‰; referenced to atmospheric N2.";
String long_name "Mole Concentration Of Nitrate In Sea Water";
String units "per mil (‰)";
}
d15N_NO3_stdev {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 0.9;
String bcodmo_name "standard deviation";
Float64 colorBarMaximum 50.0;
Float64 colorBarMinimum 0.0;
String description "Standard deviation (in per mil units) of replicate d15N-NO3 analyses.";
String long_name "Mole Concentration Of Nitrate In Sea Water";
String units "per mil (‰)";
}
d18O_NO3 {
Float32 _FillValue NaN;
Float32 actual_range 1.1, 27.4;
String bcodmo_name "d18O_NO3";
Float64 colorBarMaximum 50.0;
Float64 colorBarMinimum 0.0;
String description "d18O-NO3 = ([18O]/[16O]NO3 / [18O]/[16O]standard -1) x 1000‰; referenced to VSMOW";
String long_name "Mole Concentration Of Nitrate In Sea Water";
String units "per mil (‰)";
}
d18O_NO3_stdev {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 2.9;
String bcodmo_name "standard deviation";
Float64 colorBarMaximum 50.0;
Float64 colorBarMinimum 0.0;
String description "Standard deviation (in per mil units) of replicate d18O-NO3 analyses.";
String long_name "Mole Concentration Of Nitrate In Sea Water";
String units "per mil (‰)";
}
}
NC_GLOBAL {
String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
String acquisition_description
"Single water samples for nitrate isotopic analyses were collected from acid-
cleaned, Teflon-coated X-Niskin sampling bottles (OceanTest Equipment) of
8-liter capacity deployed on an epoxy-coated rosette (Sea-Bird Electronics)
rosette as described in Noble et al. (2012). Samples were collected into
triple-rinsed 60 mL HDPE bottles and stored frozen at -20 degrees C until
analysis. Isotopic analyses of NO3 were made with a Finnigan DELTA PLUS XP
IRMS using the denitrifier method (Sigman et al., 2001; Casciotti et al.,
2002; McIlvin and Casciotti, 2011). Both d15N-NO3 and d18O-NO3 analyses were
made in duplicate and data are reported as means +/- 1 standard deviation.";
String awards_0_award_nid "54681";
String awards_0_award_number "OCE-0452883";
String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0452883";
String awards_0_funder_name "NSF Division of Ocean Sciences";
String awards_0_funding_acronym "NSF OCE";
String awards_0_funding_source_nid "355";
String awards_0_program_manager "Donald L. Rice";
String awards_0_program_manager_nid "51467";
String awards_1_award_nid "55017";
String awards_1_award_number "OCE-1031271";
String awards_1_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1031271";
String awards_1_funder_name "NSF Division of Ocean Sciences";
String awards_1_funding_acronym "NSF OCE";
String awards_1_funding_source_nid "355";
String awards_1_program_manager "Donald L. Rice";
String awards_1_program_manager_nid "51467";
String awards_2_award_nid "55159";
String awards_2_award_number "OCE-0928414";
String awards_2_data_url "http://nsf.gov/awardsearch/showAward?AWD_ID=0928414&HistoricalAwards=false";
String awards_2_funder_name "NSF Division of Ocean Sciences";
String awards_2_funding_acronym "NSF OCE";
String awards_2_funding_source_nid "355";
String awards_2_program_manager "Donald L. Rice";
String awards_2_program_manager_nid "51467";
String awards_3_award_nid "529604";
String awards_3_award_number "OCE-0752291";
String awards_3_data_url "http://www.nsf.gov/awardsearch/showAward?AWD_ID=0752291";
String awards_3_funder_name "NSF Division of Ocean Sciences";
String awards_3_funding_acronym "NSF OCE";
String awards_3_funding_source_nid "355";
String awards_3_program_manager "Donald L. Rice";
String awards_3_program_manager_nid "51467";
String cdm_data_type "Other";
String comment
"Nitrate dual isotopes (d15N and d18O)
CoFeMUG cruise KN192-05
PI: Karen Casciotti (Stanford)
Co-PI: Caitlin Frame (University of Basel)
Version: 31 Dec 2015";
String Conventions "COARDS, CF-1.6, ACDD-1.3";
String creator_email "info@bco-dmo.org";
String creator_name "BCO-DMO";
String creator_type "institution";
String creator_url "https://www.bco-dmo.org/";
String data_source "extract_data_as_tsv version 2.3 19 Dec 2019";
String date_created "2015-12-28T20:27:24Z";
String date_modified "2020-03-31T17:33:14Z";
String defaultDataQuery "&time<now";
String doi "10.26008/1912/bco-dmo.630246.1";
Float64 Easternmost_Easting 12.2;
Float64 geospatial_lat_max -11.0;
Float64 geospatial_lat_min -17.5;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max 12.2;
Float64 geospatial_lon_min -30.0;
String geospatial_lon_units "degrees_east";
String history
"2024-11-23T16:56:14Z (local files)
2024-11-23T16:56:14Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_630246.html";
String infoUrl "https://www.bco-dmo.org/dataset/630246";
String institution "BCO-DMO";
String instruments_0_acronym "IR Mass Spec";
String instruments_0_dataset_instrument_description "Isotopic analyses of NO3 were made with a Finnigan DELTA PLUS XP IRMS using the denitrifier method.";
String instruments_0_dataset_instrument_nid "630258";
String instruments_0_description "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).";
String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB16/";
String instruments_0_instrument_name "Isotope-ratio Mass Spectrometer";
String instruments_0_instrument_nid "469";
String instruments_0_supplied_name "Finnigan DELTA PLUS XP IRMS";
String instruments_1_acronym "TM Bottle";
String instruments_1_dataset_instrument_description "Single water samples for nitrate isotopic analyses were collected from acid-cleaned, Teflon-coated X-Niskin sampling bottles (OceanTest Equipment) of 8-liter capacity deployed on an epoxy-coated rosette (Sea-Bird Electronics) rosette.";
String instruments_1_dataset_instrument_nid "630257";
String instruments_1_description "Trace metal (TM) clean rosette bottle used for collecting trace metal clean seawater samples.";
String instruments_1_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/30/";
String instruments_1_instrument_name "Trace Metal Bottle";
String instruments_1_instrument_nid "493";
String instruments_1_supplied_name "Teflon-coated X-Niskin sampling bottles (OceanTest Equipment)";
String keywords "bco, bco-dmo, biological, chemical, chemistry, code, concentration, cruise, cruise_id, d15N_NO3, d15N_NO3_stdev, d18O_NO3, d18O_NO3_stdev, data, dataset, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Nitrate, erddap, ev_code, event, latitude, lon_360, longitude, management, mole, mole_concentration_of_nitrate_in_sea_water, n02, nitrate, no3, ocean, oceanography, oceans, office, preliminary, press, science, sea, seawater, sta, water";
String keywords_vocabulary "GCMD Science Keywords";
String license "https://www.bco-dmo.org/dataset/630246/license";
String metadata_source "https://www.bco-dmo.org/api/dataset/630246";
Float64 Northernmost_Northing -11.0;
String param_mapping "{'630246': {'lat': 'master - latitude', 'press': 'flag - depth', 'lon': 'master - longitude'}}";
String parameter_source "https://www.bco-dmo.org/mapserver/dataset/630246/parameters";
String people_0_affiliation "Stanford University";
String people_0_person_name "Karen L. Casciotti";
String people_0_person_nid "50980";
String people_0_role "Principal Investigator";
String people_0_role_type "originator";
String people_1_affiliation "University of Basel (Universitat Basel)";
String people_1_person_name "Caitlin Frame";
String people_1_person_nid "529608";
String people_1_role "Co-Principal Investigator";
String people_1_role_type "originator";
String people_2_affiliation "Woods Hole Oceanographic Institution";
String people_2_affiliation_acronym "WHOI BCO-DMO";
String people_2_person_name "Shannon Rauch";
String people_2_person_nid "51498";
String people_2_role "BCO-DMO Data Manager";
String people_2_role_type "related";
String project "CoFeMUG";
String projects_0_acronym "CoFeMUG";
String projects_0_description
"The geochemistries of dissolved cobalt (Co) and iron (Fe) in the oceanic water column share several characteristics such as extremely low concentrations, redox chemistry, low solubility,and utilization as micronutrients by marine microbes. Iron has been the subject of considerable research focus in recent years due to its role in limiting phytoplankton productivity in oceanic and coastal upwelling environments. Cobalt has been much less studied, but recent data show it may be important in influencing primary productivity or phytoplankton community composition in certain geographical areas.
The CoFeMUG project predated GEOTRACES, so while it is not formally recognized as a GEOTRACES section, it is considered a GEOTRACES-related project and the CoFeMUG data are GEOTRACES compliant.
State-of-the-art geochemical and molecular biological techniques were used to address biogeochemical questions in the South Atlantic, and focus especially on the two trace metals, cobalt and iron. The 27-day cruise in November and December 2007 to the South Atlantic was designed to study cobalt and iron biogeochemistry and focus on four major hypotheses.
(1) Large fluxes of labile cobalt are associated with upwelling systems even in Aeolian dominated environments.
(2) Cobalt and phosphate show correlations in (and only in) surface waters due to micronutrient utilization and rapid remineralization. The slope of the correlation is dependent on the chemical speciation of cobalt.
(3) The absence of Trichodesmium populations in the subtropical and tropical South Atlantic is caused by iron limitation.
(4) Based on work from the California and Peru Upwelling regimes, primary productivity in the Benguela upwelling regime off of South West Africa may be iron limited or iron-cobalt colimited.
A combination of geochemical and biological/molecular analyses were made across an oligotrophic-upwelling transition to examine how changing metal regimes affect the physiology and growth of the important primary producers Trichodesmium and Synechococcus.
CoFeMUG project results are published in:
Noble, Abigail E., Carl H. Lamborg, Dan C. Ohnemus, Phoebe J. Lam, Tyler J. Goepfert, Chris I. Measures, Caitlin H. Frame, Karen L. Casciotti, Giacomo R. DiTullio, Joe Jennings, and Mak A. Saito (2012) Basin-scale inputs of cobalt, iron, and manganese from the Benguela-Angola front to the South Atlantic Ocean. Limnology & Oceanography. Vol. 57(4), July 2012. pgs 989-1010. doi:10.4319/lo.2012.57.4.0989 (www.aslo.org/lo/toc/vol_57/issue_4/0989.pdf)";
String projects_0_end_date "2008-03";
String projects_0_geolocation "South Atlantic subtropical gyre and Benguela upwelling region";
String projects_0_name "Cobalt, Iron and Micro-organisms from the Upwelling zone to the Gyre";
String projects_0_project_nid "2067";
String projects_0_start_date "2005-03";
String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
String publisher_type "institution";
String sourceUrl "(local files)";
Float64 Southernmost_Northing -17.5;
String standard_name_vocabulary "CF Standard Name Table v55";
String subsetVariables "cruise_id";
String summary "Nitrate dual isotope (d15N and d18O) measurements made from samples from acid-cleaned, Teflon-coated X-Niskin sampling bottles on the CoFeMUG cruise (KN192-05).";
String title "[Nitrate isotopes] - Nitrate dual isotope (d15N and d18O) measurements from R/V Knorr cruise KN192-05 in the South Atlantic subtropical gyre and Benguela upwelling region in 2007 (CoFeMUG project) (Cobalt, Iron and Micro-organisms from the Upwelling zone to the Gyre)";
String version "1";
Float64 Westernmost_Easting -30.0;
String xml_source "osprey2erddap.update_xml() v1.3";
}
}
Data Access Protocol (DAP) and its
selection constraints.
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names,
followed by a collection of
constraints (e.g., variable<value),
each preceded by '&' (which is interpreted as "AND").
For details, see the tabledap Documentation.