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
attribute NC_GLOBAL acquisition_description String Water column sample collection:\\u00a0Samples were collected on the R/V\nAtlantis in January through February 2010, and the R/V Melville in March\nthrough April 2011 on a zonal transect along 20\\u00ba S between 80\\u00ba W and\n100\\u00ba W, with exact station locations and sample depths, nutrient\nconcentrations and isotopic compositions reported below. Water column samples\nwere collected by Niskin bottles deployed on a rosette equipped with\nconductivity-temperature-depth (CTD) sensors. All samples were collected into\nacid-washed, sample-rinsed HDPE bottles, and samples from the upper 400 m\npassed a 0.2 \\u00b5m filter before collection. All samples were stored at\n-20\\u00ba C until analysis on land.\n \nNitrate plus nitrite (NO3-+NO2-) concentration: The concentration of NO3-+NO2-\n([NO3-+NO2-]) was determined using chemiluminescent analysis (in a\nconfiguration with a detection limit of 0.05 \\u00b5M, + 0.1 \\u00b5M 1 S.D.).\n \nReference: Braman, R. S. & Hendrix, S. A. Nanogram Nitrite and Nitrate\nDetermination in Environmental and Biological-Materials by Vanadium(Iii)\nReduction with Chemi-Luminescence Detection. Analytical Chemistry 61,\n2715-2718 (1989).\n \n\\u00a0-----\n \nNO3+NO2 d15N: The d15N of NO3+NO2 was determined using the denitrified method\non samples with >0.3 \\u00b5M NO3+NO2 with a standard deviation <0.2 per mil.\n \nReferences:\n \nSigman, D. M. et al. A bacterial method for the nitrogen isotopic analysis of\nnitrate in seawater and freshwater. Analytical Chemistry 73, 4145-4153 (2001).\n \nCasciotti, K. L., Sigman, D. M., Hastings, M. G., Bohlke, J. K. & Hilkert, A.\nMeasurement of the oxygen isotopic composition of nitrate in seawater and\nfreshwater using the denitrifier method. Analytical Chemistry 74, 4905-4912\n(2002).\n \nMcIlvin, M. R. & Casciotti, K. L. Technical Updates to the Bacterial Method\nfor Nitrate Isotopic Analyses. Analytical Chemistry 83, 1850-1856 (2011).
attribute NC_GLOBAL awards_0_award_nid String 55039
attribute NC_GLOBAL awards_0_award_number String OCE-0850801
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0850801 (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 55105
attribute NC_GLOBAL awards_1_award_number String OCE-0850905
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0850905 (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 awards_2_award_nid String 555515
attribute NC_GLOBAL awards_2_award_number String OCE-0961098
attribute NC_GLOBAL awards_2_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0961098 (external link)
attribute NC_GLOBAL awards_2_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_2_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_2_funding_source_nid String 355
attribute NC_GLOBAL awards_2_program_manager String Donald L. Rice
attribute NC_GLOBAL awards_2_program_manager_nid String 51467
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String nitrates and nitrites \n   A. Knapp (FSU) et al \n   version: 2015-04-09
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 2015-04-10T15:02:51Z
attribute NC_GLOBAL date_modified String 2016-08-20T03:10:46Z
attribute NC_GLOBAL defaultDataQuery String &amp;time&lt;now
attribute NC_GLOBAL doi String 10.1575/1912/7227
attribute NC_GLOBAL Easternmost_Easting double -80.0
attribute NC_GLOBAL geospatial_lat_max double -15.0
attribute NC_GLOBAL geospatial_lat_min double -20.0
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -80.0
attribute NC_GLOBAL geospatial_lon_min double -100.0
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 400.0
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/555691 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String CTD
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 555710
attribute NC_GLOBAL instruments_0_description String 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 and permits scientists observe the physical properties in real time via a conducting cable connecting the CTD to a deck unit and computer on the 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.  This instrument designation is used when specific make and model are not known.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/130/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String CTD profiler
attribute NC_GLOBAL instruments_0_instrument_nid String 417
attribute NC_GLOBAL instruments_0_supplied_name String CTD
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, chemical, chemistry, concentration, cruise, cruise_id, data, dataset, date, del15, del15N_NO3NO2, del15N_NO3NO2_sd, density, depth, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Salinity/Density > Density, erddap, latitude, longitude, management, mole, mole_concentration_of_nitrate_in_sea_water, n02, nitrate, nitrite, no2, no3, NO3_NO2, NO3_NO2_sd, ocean, oceanography, oceans, office, preliminary, salinity, science, sea, sea_water_sigma_theta, seawater, sigma, sigma_theta, station, theta, time, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/555691/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/555691 (external link)
attribute NC_GLOBAL Northernmost_Northing double -15.0
attribute NC_GLOBAL param_mapping String {'555691': {'lat': 'master - latitude', 'depth': 'master - depth', 'lon': 'master - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/555691/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of Southern California
attribute NC_GLOBAL people_0_affiliation_acronym String USC-WIES
attribute NC_GLOBAL people_0_person_name String Douglas G. Capone
attribute NC_GLOBAL people_0_person_nid String 50669
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 University of Southern California
attribute NC_GLOBAL people_1_affiliation_acronym String USC-WIES
attribute NC_GLOBAL people_1_person_name String William M. Berelson
attribute NC_GLOBAL people_1_person_nid String 50600
attribute NC_GLOBAL people_1_role String 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 Karen L. Casciotti
attribute NC_GLOBAL people_2_person_nid String 50980
attribute NC_GLOBAL people_2_role String Principal Investigator
attribute NC_GLOBAL people_2_role_type String originator
attribute NC_GLOBAL people_3_affiliation String University of Miami Rosenstiel School of Marine and Atmospheric Science
attribute NC_GLOBAL people_3_affiliation_acronym String UM-RSMAS
attribute NC_GLOBAL people_3_person_name String Dennis Hansell
attribute NC_GLOBAL people_3_person_nid String 50539
attribute NC_GLOBAL people_3_role String Principal Investigator
attribute NC_GLOBAL people_3_role_type String originator
attribute NC_GLOBAL people_4_affiliation String University of Miami Rosenstiel School of Marine and Atmospheric Science
attribute NC_GLOBAL people_4_affiliation_acronym String UM-RSMAS
attribute NC_GLOBAL people_4_person_name String Angela N. Knapp
attribute NC_GLOBAL people_4_person_nid String 555499
attribute NC_GLOBAL people_4_role String Co-Principal Investigator
attribute NC_GLOBAL people_4_role_type String originator
attribute NC_GLOBAL people_5_affiliation String Florida State University
attribute NC_GLOBAL people_5_affiliation_acronym String FSU - EOAS
attribute NC_GLOBAL people_5_person_name String Angela N. Knapp
attribute NC_GLOBAL people_5_person_nid String 555499
attribute NC_GLOBAL people_5_role String Contact
attribute NC_GLOBAL people_5_role_type String related
attribute NC_GLOBAL people_6_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_6_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_6_person_name String Nancy Copley
attribute NC_GLOBAL people_6_person_nid String 50396
attribute NC_GLOBAL people_6_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_6_role_type String related
attribute NC_GLOBAL project String N2 fixation ETSP,Microbial Nitrification
attribute NC_GLOBAL projects_0_acronym String N2 fixation ETSP
attribute NC_GLOBAL projects_0_description String Description from NSF award abstract:\nSeveral independent lines of geochemical and remote sensing evidence suggest that dinitrogen (N2) fixation may be associated with surface waters downstream of major oxygen minimum zones (OMZs) and in particular in the Eastern Tropical South Pacific (ETSP). However, little direct evidence supports these inferences. Besides substantiating these indirect assessments, documenting significant N2 fixation in the ETSP would provide insight into two longstanding controversies: Is the marine N budget balanced, as implied by modeling and paleoceanographic data, and if so, how are the processes that add and remove N spatially, and thus temporally coupled?\nIn this project researchers at the University of Southern California and the University of Miami will test the hypothesis that fixation occurs in the ETSP at areal rates that equal or exceed those previously documented in more well-studied regions such as the oligotrophic waters of the sub/tropical North Atlantic. If scaled to the surface area of ETSP waters, this could add an additional 10-50 Tg N per year of inputs to the global marine N budget. They will undertake two cruises in the ETSP during early and late summer in two consecutive years to assess the quantitative significance of N2 fixation as a source of new N to surface waters using complementary biological and geochemical tools. N2 fixation rates will be evaluated on two temporal/spatial scales: daily/local (bottle 15N2 incubations and floating sediment traps); and seasonal/regional (d15N budget using moored sediment traps and water column TDN d15N). These estimates provide detailed observations of potential N2 fixation during station occupation in two summer seasons, when rates are expected to be greatest, as well as prolonged observation over lower expected N2 fixation periods. A combination of these different estimates will aim to determine if N2 fixation in this region can help balance the marine N budget. If all goes as planned, this study will determine the quantitative importance of N2 fixation in the ETSP, and whether these previously undocumented rates can help resolve the marine N budget. Implications include the ability of the marine N cycle to maintain homeostasis, and thus the global C cycle on glacial/interglacial time scales.
attribute NC_GLOBAL projects_0_end_date String 2012-07
attribute NC_GLOBAL projects_0_geolocation String Eastern Tropical South Pacific
attribute NC_GLOBAL projects_0_name String Collaborative Research: Documenting N2 fixation in N deficient waters of the Eastern Tropical South Pacific
attribute NC_GLOBAL projects_0_project_nid String 555496
attribute NC_GLOBAL projects_0_start_date String 2009-08
attribute NC_GLOBAL projects_1_acronym String Microbial Nitrification
attribute NC_GLOBAL projects_1_description String Description from NSF award abstract:\nClosing the marine budgets of nitrate and nitrous oxide are central goals for researchers interested in nutrient-driven changes in primary productivity and climate change. With the implementation of new methods for oxygen isotopic analysis of seawater nitrate, it will be possible to construct a budget for nitrate based on its oxygen isotopic distribution that is complementary to nitrogen isotope budgets. Before we can effectively use oxygen isotopes in nitrate to inform the current understanding of the marine nitrogen cycle, we must first understand how different processes that produce (nitrification) and consume (assimilation, denitrification) nitrate affect its oxygen isotopic signature.\nIn this study, researchers at the Woods Hole Oceanographic Institution will provide a quantitative assessment of the oxygen isotopic systematics of nitrification in the field and thus fill a key gap in our understanding of 18O variations in nitrate, nitrite, and nitrous oxide. The primary goal is to develop a quantitative prediction of the oxygen isotopic signatures of nitrite and nitrate produced during nitrification in the sea. The researchers hypothesize that oxygen isotopic fractionation during nitrification is the primary factor setting the 18O values of newly produced nitrate and nitrite. Secondly, they hypothesize that oxygen atom exchange is low where ammonia oxidation and nitrite oxidation are tightly coupled, but may increase in regions with nitrite accumulation, such as in the primary and secondary nitrite maxima. They will test these hypotheses with a series of targeted laboratory and field experiments, as well as with measurements of nitrite and nitrate isotopic distributions extending through the euphotic zone, primary nitrite maximum, and secondary nitrite maximum of the Eastern Tropical South Pacific. The results of these experiments are expected to provide fundamental information required for the interpretation of 18O isotopic signatures in nitrite, nitrate, and N2O in the context of underlying microbial processes. A better understanding of these features and the processes involved is important for quantifying new production, controls on the N budget, and N2O production in the ocean -- which should lead to a better understanding of the direct and indirect interactions among the nitrogen cycle, marine chemistry, and climate.
attribute NC_GLOBAL projects_1_end_date String 2011-07
attribute NC_GLOBAL projects_1_geolocation String Eastern Tropical South Pacific
attribute NC_GLOBAL projects_1_name String Expression of Microbial Nitrification in the Stable Isotopic Systematics of Oceanic Nitrite and Nitrate
attribute NC_GLOBAL projects_1_project_nid String 555516
attribute NC_GLOBAL projects_1_start_date String 2010-04
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 -20.0
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Nitrate + nitrite concentration and d15N from the Eastern Tropical South Pacific, 2010-2011
attribute NC_GLOBAL title String [nitrate plus nitrite] - Nitrate + nitrite concentration and d15N from the Eastern Tropical South Pacific collected on the R/V Atlantis (AT15-61) and R/V Melville (MV1104) in 2010-2011 (N2 fixation ETSP project, Microbial Nitrification project) (Collaborative Research: Documenting N2 fixation in N deficient waters of the Eastern Tropical South Pacific)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -100.0
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 cruise_id
attribute cruise_id long_name String Cruise Id
attribute cruise_id units String unitless
variable date String
attribute date bcodmo_name String date_local
attribute date description String sample collection date (local) in yyyy-mm-dd format
attribute date long_name String Date
attribute date source_name String date
attribute date time_precision String 1970-01-01
attribute date units String unitless
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double -20.0, -15.0
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; north is positive
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 -100.0, -80.0
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; east is positive
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 station byte
attribute station _FillValue byte 127
attribute station actual_range byte 1, 13
attribute station bcodmo_name String sta
attribute station description String station
attribute station long_name String Station
attribute station 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, 400.0
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
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 sigma_theta float
attribute sigma_theta _FillValue float NaN
attribute sigma_theta actual_range float 24.223, 28.75
attribute sigma_theta bcodmo_name String sigma_theta
attribute sigma_theta description String seawater density
attribute sigma_theta long_name String Sea Water Sigma Theta
attribute sigma_theta units String unitless
variable NO3_NO2 float
attribute NO3_NO2 _FillValue float NaN
attribute NO3_NO2 actual_range float 0.0, 41.9
attribute NO3_NO2 bcodmo_name String NO3_NO2
attribute NO3_NO2 colorBarMaximum double 50.0
attribute NO3_NO2 colorBarMinimum double 0.0
attribute NO3_NO2 description String nitrate + nitrite concentration
attribute NO3_NO2 long_name String Mole Concentration Of Nitrate In Sea Water
attribute NO3_NO2 units String micro mols N per liter
variable NO3_NO2_sd float
attribute NO3_NO2_sd _FillValue float NaN
attribute NO3_NO2_sd actual_range float 0.0, 2.0
attribute NO3_NO2_sd bcodmo_name String standard deviation
attribute NO3_NO2_sd colorBarMaximum double 50.0
attribute NO3_NO2_sd colorBarMinimum double 0.0
attribute NO3_NO2_sd description String nitrate + nitrite concentration standard deviation
attribute NO3_NO2_sd long_name String NO3 NO2 Sd
attribute NO3_NO2_sd units String micro mols N per liter
variable del15N_NO3NO2 float
attribute del15N_NO3NO2 _FillValue float NaN
attribute del15N_NO3NO2 actual_range float 8.1, 19.8
attribute del15N_NO3NO2 bcodmo_name String 15N of nitrate plus nitrite
attribute del15N_NO3NO2 description String delta 15N of nitrate + nitrite, reported in units of permil vs. atmospheric N2
attribute del15N_NO3NO2 long_name String Del15 N NO3 NO2
attribute del15N_NO3NO2 units String per mil versus air
variable del15N_NO3NO2_sd float
attribute del15N_NO3NO2_sd _FillValue float NaN
attribute del15N_NO3NO2_sd actual_range float 0.0, 1.3
attribute del15N_NO3NO2_sd bcodmo_name String standard deviation
attribute del15N_NO3NO2_sd colorBarMaximum double 50.0
attribute del15N_NO3NO2_sd colorBarMinimum double 0.0
attribute del15N_NO3NO2_sd description String delta 15N of nitrate + nitrite; 1 standard deviation, reported in units of permil vs. atmospheric N2
attribute del15N_NO3NO2_sd long_name String Del15 N NO3 NO2 Sd
attribute del15N_NO3NO2_sd units String per mil versus air

 
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