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     data   graph     files  public [Arctic Nitrogen Fixation Rates] - Nitrogen fixation rates from samples collected in the
Chukchi Sea, Arctic Ocean near Barrow, Alaska in August of 2011 (ArcticNITRO project) (Does
competition for nitrogen between autotrophs and heterotrophs control carbon fluxes in the
western coastal Arctic?)
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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 Nitrogen fixation rates were calculated according to Montoya et al. (1996) and
are reported as the average +- the standard error for each site (n=3).
Sampling methodology and other analytical procedures are described in detail
in Baer et al (2017).
attribute NC_GLOBAL awards_0_award_nid String 535525
attribute NC_GLOBAL awards_0_award_number String PLR-0909839
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0909839 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Arctic Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF ARC
attribute NC_GLOBAL awards_0_funding_source_nid String 390
attribute NC_GLOBAL awards_0_program_manager String Henrietta N Edmonds
attribute NC_GLOBAL awards_0_program_manager_nid String 51517
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Arctic Nitrogen Fixation Rates
PI: Rachel Sipler
data version: 02 Jun 2017
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 2017-06-02T16:19:59Z
attribute NC_GLOBAL date_modified String 2018-10-03T19:26:21Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.704528
attribute NC_GLOBAL Easternmost_Easting double -156.65833
attribute NC_GLOBAL geospatial_lat_max double 71.34444
attribute NC_GLOBAL geospatial_lat_min double 71.11889
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -156.65833
attribute NC_GLOBAL geospatial_lon_min double -157.0625
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 8.0
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/701789 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String UV Spectrophotometer-Shimadzu
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Ammonium concentrations were measured on a Shimadzu UV-1601 spectrophotometer.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 704310
attribute NC_GLOBAL instruments_0_description String The Shimadzu UV Spectrophotometer is manufactured by Shimadzu Scientific Instruments (ssi.shimadzu.com). Shimadzu manufacturers several models of spectrophotometer; refer to dataset for make/model information.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB20/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String UV Spectrophotometer-Shimadzu
attribute NC_GLOBAL instruments_0_instrument_nid String 595
attribute NC_GLOBAL instruments_0_supplied_name String Shimadzu UV-1601 spectrophotometer
attribute NC_GLOBAL instruments_1_acronym String FIA
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Nitrate and phosphate were measured using a Lachat QuikChem 8500 autoanalyzer.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 704311
attribute NC_GLOBAL instruments_1_description String An instrument that performs flow injection analysis. Flow injection analysis (FIA) is an approach to chemical analysis that is accomplished by injecting a plug of sample into a flowing carrier stream. FIA is an automated method in which a sample is injected into a continuous flow of a carrier solution that mixes with other continuously flowing solutions before reaching a detector. Precision is dramatically increased when FIA is used instead of manual injections and as a result very specific FIA systems have been developed for a wide array of analytical techniques.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB36/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Flow Injection Analyzer
attribute NC_GLOBAL instruments_1_instrument_nid String 657
attribute NC_GLOBAL instruments_1_supplied_name String Lachat QuickChem 8500 autoanalyzer
attribute NC_GLOBAL instruments_2_acronym String Mass Spec
attribute NC_GLOBAL instruments_2_dataset_instrument_description String Isotopic measurements for 15N fixation rates were analyzed on a Europa GEO 20/20 mass spectrometer with an ANCA-SL autosampler.
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 704309
attribute NC_GLOBAL instruments_2_description String General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components.
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB16/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Mass Spectrometer
attribute NC_GLOBAL instruments_2_instrument_nid String 685
attribute NC_GLOBAL instruments_2_supplied_name String Europa GEO 20/20
attribute NC_GLOBAL keywords String absolute, ammonia, ammonium, Ammonium_SD, bco, bco-dmo, biological, chemical, chemistry, collection, Collection_Depth, concentration, data, dataset, date, Date_local, density, depth, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Ammonia, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > Phosphate, Earth Science > Oceans > Salinity/Density > Salinity, erddap, fixation, fraction, iso, latitude, local, longitude, management, mass, mass_concentration_of_phosphate_in_sea_water, mole, mole_concentration_of_ammonium_in_sea_water, mole_concentration_of_nitrate_in_sea_water, n02, N_Fixation_Rate_Absolute, nh4, nitrate, Nitrate_SD, nitrogen, Nitrogen_Fixation_Rate_SE, no3, ocean, oceanography, oceans, office, phosphate, Phosphate_SD, po4, practical, preliminary, rate, salinity, sample, Sample_ID, science, sea, sea_water_practical_salinity, seawater, size, Size_fraction, temperature, time, Time_local, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/701789/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/701789 (external link)
attribute NC_GLOBAL Northernmost_Northing double 71.34444
attribute NC_GLOBAL param_mapping String {'701789': {'Latitude': 'flag - latitude', 'Collection_Depth': 'flag - depth', 'Longitude': 'flag - longitude', 'ISO_DateTime_UTC': 'flag - time'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/701789/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Virginia Institute of Marine Science
attribute NC_GLOBAL people_0_affiliation_acronym String VIMS
attribute NC_GLOBAL people_0_person_name String Rachel E. Sipler
attribute NC_GLOBAL people_0_person_nid String 473372
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 Virginia Institute of Marine Science
attribute NC_GLOBAL people_1_affiliation_acronym String VIMS
attribute NC_GLOBAL people_1_person_name String Deborah A. Bronk
attribute NC_GLOBAL people_1_person_nid String 50574
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 University of Georgia
attribute NC_GLOBAL people_2_affiliation_acronym String UGA
attribute NC_GLOBAL people_2_person_name String Patricia L. Yager
attribute NC_GLOBAL people_2_person_nid String 51130
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 Virginia Institute of Marine Science
attribute NC_GLOBAL people_3_affiliation_acronym String VIMS
attribute NC_GLOBAL people_3_person_name String Rachel E. Sipler
attribute NC_GLOBAL people_3_person_nid String 473372
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 Amber York
attribute NC_GLOBAL people_4_person_nid String 643627
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 ArcticNITRO
attribute NC_GLOBAL projects_0_acronym String ArcticNITRO
attribute NC_GLOBAL projects_0_description String The Arctic is changing. Warm air is melting the sea ice at an accelerating pace, impacting the marine ecosystem. Further changes on land mean higher river discharge, rising seas, thawing of permafrost, and coastal erosion.
For the Arctic continental shelf, these physical changes impact the creatures that live there in major ways, ultimately altering the pathways and magnitude of energy transfer to fish, sea birds and marine mammals, and impacting the people dependant on those resources.  Our challenge today is to understand what is happening in specific Arctic ecosystems to assess future change.  
Understanding the microorganisms in Arctic coastal ecosystems is important because microbes dominate the biological biomass, production, and remineralization in marine systems. They are the "composters." Microbes are also the major producers and consumers of carbon dioxide and other greenhouse gases.
This study is focused on the climate-sensitive relationship between these microbes -- particularly the competition for nitrogen between phytoplankton/algae and bacteria -- and the productivity of the food web that depends on these organisms.
attribute NC_GLOBAL projects_0_end_date String 2012-08
attribute NC_GLOBAL projects_0_geolocation String Nearshore Arctic Ocean; Barrow, Alaska; 71.25-71.50N, 156-157W
attribute NC_GLOBAL projects_0_name String Does competition for nitrogen between autotrophs and heterotrophs control carbon fluxes in the western coastal Arctic?
attribute NC_GLOBAL projects_0_project_nid String 535528
attribute NC_GLOBAL projects_0_project_website String http://arcticnitro.org (external link)
attribute NC_GLOBAL projects_0_start_date String 2009-09
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 71.11889
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String This dataset contains nitrogen fixation rates, as well as ammonium, nitrate,
and phosphate concentrations collected in the coastal Chukchi Sea west of
Barrow, Alaska between 15 Aug 2011 and 20 Aug 2011. \u00a0Salinity,
temperature, and collection depth are also provided.
attribute NC_GLOBAL time_coverage_end String 2011-08-21T04:18Z
attribute NC_GLOBAL time_coverage_start String 2011-08-16T03:10Z
attribute NC_GLOBAL title String [Arctic Nitrogen Fixation Rates] - Nitrogen fixation rates from samples collected in the Chukchi Sea, Arctic Ocean near Barrow, Alaska in August of 2011 (ArcticNITRO project) (Does competition for nitrogen between autotrophs and heterotrophs control carbon fluxes in the western coastal Arctic?)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -157.0625
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Sample_ID   String  
attribute Sample_ID bcodmo_name String sample
attribute Sample_ID description String Station number (name)
attribute Sample_ID long_name String Sample ID
attribute Sample_ID nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute Sample_ID units String unitless
variable Date_local   String  
attribute Date_local bcodmo_name String date
attribute Date_local description String Date of sample collection (time zone AKDT, UTC-8)
attribute Date_local long_name String Date Local
attribute Date_local nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute Date_local time_precision String 1970-01-01
attribute Date_local units String unitless
variable Time_local   String  
attribute Time_local bcodmo_name String time
attribute Time_local description String Time of sample collection (time zone AKDT, UTC-8)
attribute Time_local long_name String Time Local
attribute Time_local nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/ (external link)
attribute Time_local units String unitless
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.3134642E9, 1.31390028E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Date and time of sample collection (UTC) in ISO 8601:2004(E) format YYYY-MM-DDThh:mmZ
attribute time ioos_category String Time
attribute time long_name String ISO Date Time UTC
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time source_name String ISO_DateTime_UTC
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01T00:00Z
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 71.11889, 71.34444
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 of sample collection
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 -157.0625, -156.65833
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 of sample collection; 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 Depth   float  
attribute Depth _FillValue float NaN
attribute Depth actual_range float 8.0, 17.5
attribute Depth bcodmo_name String depth_w
attribute Depth colorBarMaximum double 8000.0
attribute Depth colorBarMinimum double -8000.0
attribute Depth colorBarPalette String TopographyDepth
attribute Depth description String Water Column Depth (Bottom depth)
attribute Depth long_name String Depth
attribute Depth standard_name String depth
attribute Depth units String meters (m)
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, 8.0
attribute depth axis String Z
attribute depth bcodmo_name String depth
attribute depth description String Depth of sample collection
attribute depth ioos_category String Location
attribute depth long_name String Collection 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 Size_fraction   String  
attribute Size_fraction bcodmo_name String sample_descrip
attribute Size_fraction description String Size Fraction
attribute Size_fraction long_name String Size Fraction
attribute Size_fraction units String micrometer (um)
variable Temperature   float  
attribute Temperature _FillValue float NaN
attribute Temperature actual_range float 4.5, 6.7
attribute Temperature bcodmo_name String temperature
attribute Temperature description String Temperature
attribute Temperature long_name String Temperature
attribute Temperature units String degrees Celsius
variable Salinity   float  
attribute Salinity _FillValue float NaN
attribute Salinity actual_range float 12.0, 30.5
attribute Salinity bcodmo_name String sal
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 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/ (external link)
attribute Salinity units String Practical Salinity Units (PSU)
variable N_Fixation_Rate_Absolute   float  
attribute N_Fixation_Rate_Absolute _FillValue float NaN
attribute N_Fixation_Rate_Absolute actual_range float 0.3, 12.6
attribute N_Fixation_Rate_Absolute bcodmo_name String N2_fix
attribute N_Fixation_Rate_Absolute description String Absolute Nitrogen fixation rate
attribute N_Fixation_Rate_Absolute long_name String N Fixation Rate Absolute
attribute N_Fixation_Rate_Absolute units String micromoles per liter per hour (umol/L/h)
variable Nitrogen_Fixation_Rate_SE   float  
attribute Nitrogen_Fixation_Rate_SE _FillValue float NaN
attribute Nitrogen_Fixation_Rate_SE actual_range float 0.2, 6.1
attribute Nitrogen_Fixation_Rate_SE bcodmo_name String N2_fix
attribute Nitrogen_Fixation_Rate_SE description String Nitrogen fixation rate standard error
attribute Nitrogen_Fixation_Rate_SE long_name String Nitrogen Fixation Rate SE
attribute Nitrogen_Fixation_Rate_SE units String micromoles per liter per hour (umol/L/h)
variable Ammonium   float  
attribute Ammonium _FillValue float NaN
attribute Ammonium actual_range float 0.1, 1.55
attribute Ammonium bcodmo_name String Ammonium
attribute Ammonium colorBarMaximum double 5.0
attribute Ammonium colorBarMinimum double 0.0
attribute Ammonium description String Ammonium concentration [NH4]
attribute Ammonium long_name String Mole Concentration Of Ammonium In Sea Water
attribute Ammonium nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AMONAAZX/ (external link)
attribute Ammonium units String micromolar (umol/L)
variable Ammonium_SD   float  
attribute Ammonium_SD _FillValue float NaN
attribute Ammonium_SD actual_range float 0.0, 0.07
attribute Ammonium_SD bcodmo_name String Ammonium
attribute Ammonium_SD colorBarMaximum double 50.0
attribute Ammonium_SD colorBarMinimum double 0.0
attribute Ammonium_SD description String Ammonium concentration [NH4] standard deviation
attribute Ammonium_SD long_name String Ammonium SD
attribute Ammonium_SD nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AMONAAZX/ (external link)
attribute Ammonium_SD units String micromolar (umol/L)
variable Nitrate   float  
attribute Nitrate _FillValue float NaN
attribute Nitrate actual_range float 0.21, 0.59
attribute Nitrate bcodmo_name String NO3
attribute Nitrate colorBarMaximum double 50.0
attribute Nitrate colorBarMinimum double 0.0
attribute Nitrate description String Nitrate concentration [NO3]
attribute Nitrate long_name String Mole Concentration Of Nitrate In Sea Water
attribute Nitrate nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/NTRAIGGS/ (external link)
attribute Nitrate units String micromolar (umol/L)
variable Nitrate_SD   float  
attribute Nitrate_SD _FillValue float NaN
attribute Nitrate_SD actual_range float 0.0, 0.01
attribute Nitrate_SD bcodmo_name String NO2
attribute Nitrate_SD colorBarMaximum double 50.0
attribute Nitrate_SD colorBarMinimum double 0.0
attribute Nitrate_SD description String Nitrate concentration [NO3] standard deviation
attribute Nitrate_SD long_name String Nitrate SD
attribute Nitrate_SD nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/NTRIAAZX/ (external link)
attribute Nitrate_SD units String micromolar (umol/L)
variable Phosphate   float  
attribute Phosphate _FillValue float NaN
attribute Phosphate actual_range float 0.17, 0.55
attribute Phosphate bcodmo_name String PO4
attribute Phosphate description String Phosphate concentration [PO4]
attribute Phosphate long_name String Mass Concentration Of Phosphate In Sea Water
attribute Phosphate units String micromolar (umol/L)
variable Phosphate_SD   float  
attribute Phosphate_SD _FillValue float NaN
attribute Phosphate_SD actual_range float 0.0, 0.01
attribute Phosphate_SD bcodmo_name String PO4
attribute Phosphate_SD colorBarMaximum double 50.0
attribute Phosphate_SD colorBarMinimum double 0.0
attribute Phosphate_SD description String Phosphate concentration [PO4] standard deviation
attribute Phosphate_SD long_name String Phosphate SD
attribute Phosphate_SD units String micromolar (umol/L)

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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