BCO-DMO ERDDAP
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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 Methodology (extracted from the TN303 cruise report):  \n Salinity and nutrient samples were taken from the surface fish and from\nNiskins attached to the wire at each Deep and Mid McLane pump cast.\n \nNutrient analyses (phosphate, silicate, nitrate+nitrite, nitrite) were\nperformed on a Seal Analytical continuous-flow AutoAnalyzer 3 (AA3). The\nanalytical methods used are described by Gordon et al., Hager et al., and\nAtlas et al.\n \nSilicate: Silicate was analyzed using the technique of Kirkwood et al.\\u00a0An\nacidic solution of ammonium molybdate was added to a seawater sample to\nproduce silicomolybdic acid, which was then reduced to a silicomolybdenum blue\ncomplex following the addition of ascorbic acid. Oxalic acid was also added to\nimpede PO4 color development. The sample was passed through a flowcell and the\nabsorbance measured at 660nm.\n \nNitrate + Nitrite: A modification of Armstrong et al. procedure was used for\nthe analysis of nitrate and nitrite. For the nitrate analysis, the seawater\nsample was passed through a cadmium reduction column where nitrate was\nquantitatively reduced to nitrite. Sulfanilamide was introduced to the sample\nstream followed by N-(1-naphthyl)ethylenediamine dihydrochloride which coupled\nto form a red azo dye. The stream was then passed through a flowcell and the\nabsorbance measured at 520nm. The same technique was employed for nitrite\nanalysis, except the cadmium column was not present.\n \nPhosphate:\\u00a0Phosphate was analyzed using the Murphy and Riley technique.\nAn acidic solution of ammonium molybdate and antimony potassium tartrate was\nadded to the sample to produce phosphomolybdic acid, then reduced to\nphosphomolybdous acid (a blue compound) following the addition of ascorbic\nacid. The reaction product was heated to ~37 degrees C to enhance color\ndevelopment, then passed through a flowcell and the absorbance measured at\n880nm.\n \nSalinity:\\u00a0A single Guildline Autosal 8400B salinometer (S/N 69-180)\nlocated in the hydro lab was used for all salinity measurements. Samples were\nanalyzed after they had equilibrated to laboratory temperature, usually within\n12-29 hours after collection. The salinometer was standardized for each group\nof analyses, 36 to 72 samples, using two fresh vials of standard seawater per\ngroup.\\u00a0Normal standardization procedures included flushing the cell at\nleast 2 times with a fresh vial of IAPSO Standard Seawater (SSW, Batch P-155),\nsetting the flow rate as low as possible during the last fill, and monitoring\nthe STD dial setting. Samples were run using 2 flushes before the final fill.\nThe computer determined the stability of a measurement and prompted for\nadditional readings if there appeared to be drift.\\u00a0Salinity samples were\ndrawn into 200 ml Kimax high-alumina borosilicate bottles, which were rinsed\nthree times with the sample prior to filling. The bottles were sealed with\ncustom-made plastic insert thimbles and kept closed with Nalgene screw\ncaps.\\u00a0PSS-78 salinity [UNES81] was calculated for each sample from the\nmeasured conductivity ratios. The difference between the initial vial of\nstandard water and the next one run as an unknown was applied as a linear\nfunction of elapsed run time to the measured ratios. The corrected salinity\ndata were then incorporated into the cruise database. Data processing included\ndouble checking that the station, sample and box number had been correctly\nassigned, and reviewing the data and log files for operator comments. The\nsalinity data were compared to CTD salinities and were used for shipboard\nsensor calibration.
attribute NC_GLOBAL awards_0_award_nid String 502593
attribute NC_GLOBAL awards_0_award_number String OCE-1235248
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=1235248&HistoricalAwards=false (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 502594
attribute NC_GLOBAL awards_1_award_number String OCE-1130870
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=1130870&HistoricalAwards=false (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 Henrietta N Edmonds
attribute NC_GLOBAL awards_1_program_manager_nid String 51517
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String GEOTRACES EPZT  GT13  TN303 \n  Mid and Deep Pump Cast Nutrient and Salinity samples\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \n  PIs: Moffett, et al \n  Version: 02 June 2016 (fixed 00 month in DATE column) \n \t\t\t\t\t\t\t\t\t\t\t\t\t \n  \"Pump_SampleNo\" is cast*100+bottle \n  (Nutrient values are reported in umol/L units; Salinity is PSS-78)
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 2014-08-13T15:41:43Z
attribute NC_GLOBAL date_modified String 2020-04-16T20:41:13Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.26008/1912/bco-dmo.522834.2
attribute NC_GLOBAL Easternmost_Easting double -78.16683
attribute NC_GLOBAL geospatial_lat_max double -10.50017
attribute NC_GLOBAL geospatial_lat_min double -16.00058
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -78.16683
attribute NC_GLOBAL geospatial_lon_min double -152.00059
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/522834 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String McLane Pump
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 682727
attribute NC_GLOBAL instruments_0_description String McLane pumps sample large volumes of seawater at depth. They are attached to a wire and lowered to different depths in the ocean. As the water is pumped through the filter, particles suspended in the ocean are collected on the filters. The pumps are then retrieved and the contents of the filters are analyzed in a lab.
attribute NC_GLOBAL instruments_0_instrument_name String McLane Pump
attribute NC_GLOBAL instruments_0_instrument_nid String 627
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, chemical, chemistry, concentration, data, dataset, date, datetime, density, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > Phosphate, Earth Science > Oceans > Salinity/Density > Salinity, erddap, eventno, expocode, geotrc, GEOTRC_EVENTNO, GEOTRC_SAMPNO, iso, latitude, longitude, management, mass, mass_concentration_of_phosphate_in_sea_water, mole, mole_concentration_of_nitrate_in_sea_water, mole_concentration_of_nitrite_in_sea_water, n02, nitrate, nitrite, NO2, no3, ocean, oceanography, oceans, office, phosphate, po4, practical, preliminary, pump, Pump_SampleNo, salinity, sample, sampno, science, sea, sea_water_practical_salinity, seawater, sect, SECT_ID, sil, station, time, time2, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/522834/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/522834 (external link)
attribute NC_GLOBAL Northernmost_Northing double -10.50017
attribute NC_GLOBAL param_mapping String {'522834': {'LATITUDE': 'flag - latitude', 'ISO_DATETIME': 'flag - time', 'LONGITUDE': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/522834/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of Southern California
attribute NC_GLOBAL people_0_affiliation_acronym String USC-HIMS
attribute NC_GLOBAL people_0_person_name String James W. Moffett
attribute NC_GLOBAL people_0_person_nid String 50800
attribute NC_GLOBAL people_0_role String Lead Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Old Dominion University
attribute NC_GLOBAL people_1_affiliation_acronym String ODU
attribute NC_GLOBAL people_1_person_name String Gregory Cutter
attribute NC_GLOBAL people_1_person_nid String 50679
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
attribute NC_GLOBAL people_2_person_name String Christopher R. German
attribute NC_GLOBAL people_2_person_nid String 51700
attribute NC_GLOBAL people_2_role String Co-Principal Investigator
attribute NC_GLOBAL people_2_role_type String originator
attribute NC_GLOBAL people_3_affiliation String University of Southern California
attribute NC_GLOBAL people_3_affiliation_acronym String USC-HIMS
attribute NC_GLOBAL people_3_person_name String James W. Moffett
attribute NC_GLOBAL people_3_person_nid String 50800
attribute NC_GLOBAL people_3_role String Contact
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL people_4_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_4_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_4_person_name String Stephen R. Gegg
attribute NC_GLOBAL people_4_person_nid String 50910
attribute NC_GLOBAL people_4_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_4_role_type String related
attribute NC_GLOBAL project String U.S. GEOTRACES EPZT
attribute NC_GLOBAL projects_0_acronym String U.S. GEOTRACES EPZT
attribute NC_GLOBAL projects_0_description String From the NSF Award Abstract\nThe mission of the International GEOTRACES Program (www.geotraces.org), of which the U.S. chemical oceanography research community is a founding member, is \"to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions\" (GEOTRACES Science Plan, 2006). In the United States, ocean chemists are currently in the process of organizing a zonal transect in the eastern tropical South Pacific (ETSP) from Peru to Tahiti as the second cruise of the U.S.GEOTRACES Program. This Pacific section includes a large area characterized by high rates of primary production and particle export in the eastern boundary associated with the Peru Upwelling, a large oxygen minimum zone that is a major global sink for fixed nitrogen, and a large hydrothermal plume arising from the East Pacific Rise. This particular section was selected as a result of open planning workshops in 2007 and 2008, with a final recommendation made by the U.S.GEOTRACES Steering Committee in 2009. It is the first part of a two-stage plan that will include a meridional section of the Pacific from Tahiti to Alaska as a subsequent expedition.\nThis award provides funding for management of the U.S.GEOTRACES Pacific campaign to a team of scientists from the University of Southern California, Old Dominion University, and the Woods Hole Oceanographic Institution. The three co-leaders will provide mission leadership, essential support services, and management structure for acquiring the trace elements and isotopes samples listed as core parameters in the International GEOTRACES Science Plan, plus hydrographic and nutrient data needed by participating investigators. With this support from NSF, the management team will (1) plan and coordinate the 52-day Pacific research cruise described above; (2) obtain representative samples for a wide variety of trace metals of interest using conventional CTD/rosette and GEOTRACES Sampling Systems; (3) acquire conventional JGOFS/WOCE-quality hydrographic data (CTD, transmissometer, fluorometer, oxygen sensor, etc) along with discrete samples for salinity, dissolved oxygen (to 1 uM detection limits), plant pigments, redox tracers such as ammonium and nitrite, and dissolved nutrients at micro- and nanomolar levels; (4) ensure that proper QA/QC protocols are followed and reported, as well as fulfilling all GEOTRACES Intercalibration protocols; (5) prepare and deliver all hydrographic-type data to the GEOTRACES Data Center (and US data centers); and (6) coordinate cruise communications between all participating investigators, including preparation of a hydrographic report/publication.\nBroader Impacts: The project is part of an international collaborative program that has forged strong partnerships in the intercalibration and implementation phases that are unprecedented in chemical oceanography. The science product of these collective missions will enhance our ability to understand how to interpret the chemical composition of the ocean, and interpret how climate change will affect ocean chemistry. Partnerships include contributions to the infrastructure of developing nations with overlapping interests in the study area, in this case Peru. There is a strong educational component to the program, with many Ph.D. students carrying out thesis research within the program.\nFigure 1. The 2013 GEOTRACES EPZT Cruise Track. [click on the image to view a larger version]
attribute NC_GLOBAL projects_0_end_date String 2015-06
attribute NC_GLOBAL projects_0_geolocation String Eastern Tropical Pacific - Transect from Peru to Tahiti
attribute NC_GLOBAL projects_0_name String U.S. GEOTRACES East Pacific Zonal Transect
attribute NC_GLOBAL projects_0_project_nid String 499723
attribute NC_GLOBAL projects_0_project_website String http://www.geotraces.org/ (external link)
attribute NC_GLOBAL projects_0_start_date String 2012-06
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 -16.00058
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String EXPOCODE,SECT_ID
attribute NC_GLOBAL summary String Pump nutrients and salts along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the tropical Pacific from Peru to Tahiti during 2013.
attribute NC_GLOBAL time_coverage_end String 2013-12-18T08:12:00.00Z
attribute NC_GLOBAL time_coverage_start String 2013-10-29T22:11:00.00Z
attribute NC_GLOBAL title String Pump nutrients and salts along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the tropical Pacific from Peru to Tahiti during 2013 (U.S. GEOTRACES EPZT project)
attribute NC_GLOBAL version String 2
attribute NC_GLOBAL Westernmost_Easting double -152.00059
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable EXPOCODE String
attribute EXPOCODE bcodmo_name String Cruise Name
attribute EXPOCODE description String expedition code assigned by the CCHDO: NODCShipCodeYearMonthDay
attribute EXPOCODE long_name String EXPOCODE
attribute EXPOCODE units String text
variable SECT_ID String
attribute SECT_ID bcodmo_name String Cruise Name
attribute SECT_ID description String cruise section identification number
attribute SECT_ID long_name String SECT ID
attribute SECT_ID units String text
variable GEOTRC_EVENTNO short
attribute GEOTRC_EVENTNO _FillValue short 32767
attribute GEOTRC_EVENTNO actual_range short 4021, 4475
attribute GEOTRC_EVENTNO bcodmo_name String event
attribute GEOTRC_EVENTNO description String GEOTRACES Event Number
attribute GEOTRC_EVENTNO long_name String GEOTRC EVENTNO
attribute GEOTRC_EVENTNO nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)
attribute GEOTRC_EVENTNO units String dimensionless
variable Station String
attribute Station bcodmo_name String station
attribute Station description String Station Number
attribute Station long_name String Station
attribute Station units String dimensionless
variable GEOTRC_SAMPNO short
attribute GEOTRC_SAMPNO _FillValue short 32767
attribute GEOTRC_SAMPNO actual_range short 2162, 10457
attribute GEOTRC_SAMPNO bcodmo_name String sample
attribute GEOTRC_SAMPNO description String GEOTRACES Sample Number
attribute GEOTRC_SAMPNO long_name String GEOTRC SAMPNO
attribute GEOTRC_SAMPNO nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute GEOTRC_SAMPNO units String dimensionless
variable Pump_SampleNo short
attribute Pump_SampleNo _FillValue short 32767
attribute Pump_SampleNo actual_range short 301, 1603
attribute Pump_SampleNo bcodmo_name String sample
attribute Pump_SampleNo description String Pump_SampleNo is cast*100+bottle
attribute Pump_SampleNo long_name String Pump Sample No
attribute Pump_SampleNo nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Pump_SampleNo units String dimensionless
variable DATE int
attribute DATE _FillValue int 2147483647
attribute DATE actual_range int 20131029, 20131218
attribute DATE bcodmo_name String date
attribute DATE description String Station Date (GMT) in the format YYYYMMDD
attribute DATE long_name String DATE
attribute DATE nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute DATE units String unitless
variable time2 String
attribute time2 bcodmo_name String time
attribute time2 description String Station Time (GMT)
attribute time2 long_name String TIME
attribute time2 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/ (external link)
attribute time2 units String HHMM
variable time double
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.38308466E9, 1.38735432E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Date/Time (ISO formatted)
attribute time ioos_category String Time
attribute time long_name String ISO DATETIME
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time source_name String ISO_DATETIME
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01T00:00:00.00Z
attribute time units String seconds since 1970-01-01T00:00:00Z
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double -16.00058, -10.50017
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 Station Latitude (South is negative)
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 -152.00059, -78.16683
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 Station Longitude (West is negative)
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 NO3 float
attribute NO3 _FillValue float NaN
attribute NO3 actual_range float 1.83, 45.98
attribute NO3 bcodmo_name String NO3
attribute NO3 colorBarMaximum double 50.0
attribute NO3 colorBarMinimum double 0.0
attribute NO3 description String NO3
attribute NO3 long_name String Mole Concentration Of Nitrate In Sea Water
attribute NO3 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/NTRAIGGS/ (external link)
attribute NO3 units String umol/L
variable PO4 float
attribute PO4 _FillValue float NaN
attribute PO4 actual_range float 0.3, 3.39
attribute PO4 bcodmo_name String PO4
attribute PO4 description String PO4
attribute PO4 long_name String Mass Concentration Of Phosphate In Sea Water
attribute PO4 units String umol/L
variable SIL float
attribute SIL _FillValue float NaN
attribute SIL actual_range float 1.4, 154.0
attribute SIL bcodmo_name String SiO4
attribute SIL description String SILICATE
attribute SIL long_name String SIL
attribute SIL nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/SLCAAAZX/ (external link)
attribute SIL units String umol/L
variable NO2 float
attribute NO2 _FillValue float NaN
attribute NO2 actual_range float 0.0, 9.56
attribute NO2 bcodmo_name String NO2
attribute NO2 colorBarMaximum double 1.0
attribute NO2 colorBarMinimum double 0.0
attribute NO2 description String NO2
attribute NO2 long_name String Mole Concentration Of Nitrite In Sea Water
attribute NO2 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/NTRIAAZX/ (external link)
attribute NO2 units String umol/L
variable Salinity float
attribute Salinity _FillValue float NaN
attribute Salinity actual_range float 34.49911, 36.09581
attribute Salinity bcodmo_name String sal_bottle
attribute Salinity colorBarMaximum double 37.0
attribute Salinity colorBarMinimum double 32.0
attribute Salinity description String Salinity
attribute Salinity long_name String Sea Water Practical Salinity
attribute Salinity units String PSS-78

 
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