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Title Sum-
Institution Dataset ID
     data   graph     files  public Inorganic and organic nutrient data from Niskin bottles from R/V Knorr cruise KN210-04 in the
Western Atlantic Ocean between Uruguay and Barbados in 2013 (Deep Atlantic DOM project)
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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
attribute NC_GLOBAL acquisition_description String Samples for inorganic nutrient analysis were collected in HDPE bottles and
frozen (-20\u00baC) immediately after sample collection. Samples were kept
frozen until processing by Joe Jennings at Oregon State University. The
analyses for phosphate (PO4), nitrate plus nitrite (NO3_NO2), nitrite (NO2),
ammonium (NH4), and silicic acid (silicate) were performed using a hybrid
Technicon AutoAnalyzerII and Alpkem RFA300 system following protocols modified
from Gordon et al. (see below for reference). The estimated precision for each
element was as follows: PO4, \u00b1 0.008 \u00b5M; NO3_NO2, \u00b1 0.15
\u00b5M; NO2, \u00b1 0.01 \u00b5M; silicic acid, \u00b1 0.3 \u00b5M.

To obtain the concentration of total organic carbon (TOC) and total nitrogen
(TN), a 40 ml aliquot of whole seawater was acidified to pH~3 with
concentrated hydrochloric acid (HCl) and stored in combusted glass vials at
4\u00b0C until analysis with a Shimadzu TOC-VCSH total organic carbon analyzer
coupled to a TNM-1 analyzer. Blanks (MilliQ water) and standard curves with
potassium hydrogen phthalate and potassium nitrate were interspersed into the
sample runs. The coefficient of variability between replicate injections was
<1%. Comparisons to standards provided by Prof. D. Hansell (University of
Miami) were made daily.

Gordon, L. I., J. C. Jennings, Jr., A. A. Ross, and J. M. Krest. 1994. A
suggested protocol for continuous flow automated analysis of seawater
nutrients (phosphate, nitrate, nitrite and silicic acid) in the WOCE
Hydrographic Program and the Joint Global Ocean Fluxes Study. In WOCE
operations manual. WOCE report no. 68/91, revision 1. WHP Office Report
WHPO91-1. Woods Hole Oceanographic Institution, Woods Hole, Mass.
attribute NC_GLOBAL awards_0_award_nid String 54954
attribute NC_GLOBAL awards_0_award_number String OCE-1154320
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1154320 (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 cdm_data_type String Other
attribute NC_GLOBAL comment String Inorganic and organic nutrients from Niskin bottles
PI: Elizabeth Kujawinski (WHOI)
Co-PI & Contact: Krista Longnecker (WHOI)
Version History:
25 July 2016 - removed one questionable NPOC value per request of PI (cast 18, niskin 21)
15 Dec 2013 - original version
Note: Inorganic nutrient values below zero should be considered as
below the detection limit for the instrument
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 2013-12-20T18:48:40Z
attribute NC_GLOBAL date_modified String 2019-11-20T19:08:31Z
attribute NC_GLOBAL defaultDataQuery String &amp;time&lt;now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.473296.1
attribute NC_GLOBAL Easternmost_Easting double -24.000749
attribute NC_GLOBAL geospatial_lat_max double 9.700333
attribute NC_GLOBAL geospatial_lat_min double -38.0026
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -24.000749
attribute NC_GLOBAL geospatial_lon_min double -55.299424
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 5532.903
attribute NC_GLOBAL geospatial_vertical_min double 5.234
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/473296 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Niskin bottle
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 473303
attribute NC_GLOBAL instruments_0_description String A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24 or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Niskin bottle
attribute NC_GLOBAL instruments_0_instrument_nid String 413
attribute NC_GLOBAL instruments_0_supplied_name String Niskin bottle
attribute NC_GLOBAL instruments_1_acronym String Shimadzu TOC-V
attribute NC_GLOBAL instruments_1_dataset_instrument_description String The concentrations of total organic carbon (TOC) and total nitrogen (TN) were determined with a Shimadzu TOC-VCSH total organic carbon analyzer coupled to a TNM-1 analyzer.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 473310
attribute NC_GLOBAL instruments_1_description String A Shimadzu TOC-V Analyzer measures DOC by high temperature combustion method.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String http://onto.nerc.ac.uk/CAST/124 (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Shimadzu TOC-V Analyzer
attribute NC_GLOBAL instruments_1_instrument_nid String 603
attribute NC_GLOBAL instruments_1_supplied_name String Shimadzu TOC-V
attribute NC_GLOBAL instruments_2_acronym String Technicon AutoAnalyzerII
attribute NC_GLOBAL instruments_2_dataset_instrument_description String The analyses for phosphate (PO4), nitrate plus nitrite (NO3_NO2), nitrite (NO2), ammonium (NH4), and silicic acid (silicate) were performed using a hybrid Technicon AutoAnalyzerII and Alpkem RFA300.
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 473307
attribute NC_GLOBAL instruments_2_description String A rapid flow analyzer that may be used to measure nutrient concentrations in seawater. It is a continuous segmented flow instrument consisting of a sampler, peristaltic pump, analytical cartridge, heating bath, and colorimeter. See more information about this instrument from the manufacturer.
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0291/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Technicon AutoAnalyzerII
attribute NC_GLOBAL instruments_2_instrument_nid String 473306
attribute NC_GLOBAL instruments_2_supplied_name String Technicon AutoAnalyzerII
attribute NC_GLOBAL instruments_3_acronym String Alpkem RFA300
attribute NC_GLOBAL instruments_3_dataset_instrument_description String The analyses for phosphate (PO4), nitrate plus nitrite (NO3_NO2), nitrite (NO2), ammonium (NH4), and silicic acid (silicate) were performed using a hybrid Technicon AutoAnalyzerII and Alpkem RFA300.
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 473309
attribute NC_GLOBAL instruments_3_description String A rapid flow analyser (RFA) that may be used to measure nutrient concentrations in seawater. It is an air-segmented, continuous flow instrument comprising a sampler, a peristaltic pump which simultaneously pumps samples, reagents and air bubbles through the system, analytical cartridge, heating bath, colorimeter, data station, and printer. The RFA-300 was a precursor to the smaller Alpkem RFA/2 (also RFA II or RFA-2).
attribute NC_GLOBAL instruments_3_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0414/ (external link)
attribute NC_GLOBAL instruments_3_instrument_name String Alpkem RFA300
attribute NC_GLOBAL instruments_3_instrument_nid String 473308
attribute NC_GLOBAL instruments_3_supplied_name String Alpkem RFA300
attribute NC_GLOBAL keywords String ammonia, ammonium, bco, bco-dmo, biological, bots, cast, chemical, chemistry, concentration, data, dataset, date, date_start_utc, depth, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Ammonia, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > Phosphate, Earth Science > Oceans > Ocean Chemistry > Silicate, erddap, event, event_start, latitude, longitude, management, mass, mass_concentration_of_phosphate_in_sea_water, mass_concentration_of_silicate_in_sea_water, mole, mole_concentration_of_ammonium_in_sea_water, mole_concentration_of_nitrate_in_sea_water, mole_concentration_of_nitrite_in_sea_water, n02, nh4, niskin, nitrate, nitrite, NO2, no3, NO3_NO2, npoc, ocean, oceanography, oceans, office, phosphate, po4, preliminary, press, science, sea, seawater, silicate, start, station, time, time_start_utc, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/473296/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/473296 (external link)
attribute NC_GLOBAL Northernmost_Northing double 9.700333
attribute NC_GLOBAL param_mapping String {'473296': {'depth': 'flag - depth', 'lon_start': 'flag - longitude', 'lat_start': 'flag - latitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/473296/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_0_affiliation_acronym String WHOI
attribute NC_GLOBAL people_0_person_name String Elizabeth Kujawinski
attribute NC_GLOBAL people_0_person_nid String 51089
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 Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI
attribute NC_GLOBAL people_1_person_name String Krista Longnecker
attribute NC_GLOBAL people_1_person_nid String 51483
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 Krista Longnecker
attribute NC_GLOBAL people_2_person_nid String 51483
attribute NC_GLOBAL people_2_role String Contact
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL people_3_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_3_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_3_person_name String Shannon Rauch
attribute NC_GLOBAL people_3_person_nid String 51498
attribute NC_GLOBAL people_3_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL project String Deep Atlantic DOM
attribute NC_GLOBAL projects_0_acronym String Deep Atlantic DOM
attribute NC_GLOBAL projects_0_description String Transformations of dissolved organic matter (DOM) in the deep ocean have profound impacts on the global carbon cycle due to the sequestration of carbon dioxide (CO2) away from the atmosphere. Although research has been conducted on the high molecular weight component of this material, the same cannot be said for low molecular weight DOM because the needed analytical techniques have not been available to determine its composition and reactivity.
In recent years, a research team at Woods Hole Oceanographic Institution has acquired the necessary analytical capability. As such, in this project, they will carry out the first systematic survey of deep ocean DOM in the western Atlantic Ocean to characterize the low molecular weight fraction of DOM in southward flowing North Atlantic Deep Water (NADW), northward flowing Antarctic Bottom Water (AABW), and Antarctic Intermediate Water (AAIW). Using ultrahigh resolution mass spectrometry and multi-stage fragmentation coupled to liquid chromatography, the scientists will determine the spatial variability in the composition of DOM along the flow path of the water masses, as well as assess the source water, transport, and surface processes that contribute to temporal changes in DOM composition. These results will be augmented with structural elucidation and quantitative assays of unique marker compounds for each water mass. Results will provide important insights into the biogeochemical reactions that govern DOM dynamics in the deep ocean.
attribute NC_GLOBAL projects_0_end_date String 2015-01
attribute NC_GLOBAL projects_0_geolocation String Western Atlantic Ocean
attribute NC_GLOBAL projects_0_name String Dissolved Organic Matter Composition in the Deep Atlantic Ocean
attribute NC_GLOBAL projects_0_project_nid String 2204
attribute NC_GLOBAL projects_0_start_date String 2012-02
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 -38.0026
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Inorganic and organic nutrient data from Niskin bottles from the KN210-04 cruise. Data include concentration of: phosphate, nitrate+nitrite, silicate, nitrite, ammonium, non-purgeable organic carbon, and total nitrogen.
attribute NC_GLOBAL title String Inorganic and organic nutrient data from Niskin bottles from R/V Knorr cruise KN210-04 in the Western Atlantic Ocean between Uruguay and Barbados in 2013 (Deep Atlantic DOM project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -55.299424
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable cast   byte  
attribute cast _FillValue byte 127
attribute cast actual_range byte 2, 74
attribute cast bcodmo_name String cast
attribute cast description String Consecutive cast number for the instrument.
attribute cast long_name String Cast
attribute cast units String dimensionless
variable station   byte  
attribute station _FillValue byte 127
attribute station actual_range byte 2, 23
attribute station bcodmo_name String station
attribute station description String Identification number of the sampling station.
attribute station long_name String Station
attribute station units String dimensionless
variable date_start_utc   int  
attribute date_start_utc _FillValue int 2147483647
attribute date_start_utc actual_range int 20130327, 20130506
attribute date_start_utc bcodmo_name String date_utc
attribute date_start_utc description String Date (UTC) given as 4-digit year -- 2-digit month -- 2-digit day in YYYYmmdd format.
attribute date_start_utc long_name String Date Start Utc
attribute date_start_utc units String unitless
variable time_start_utc   short  
attribute time_start_utc _FillValue short 32767
attribute time_start_utc actual_range short 334, 2317
attribute time_start_utc bcodmo_name String time_utc
attribute time_start_utc description String Time (UTC) given as hour -- minute.
attribute time_start_utc long_name String Time Start Utc
attribute time_start_utc units String HHMM
variable event_start   String  
attribute event_start bcodmo_name String event
attribute event_start description String The event number from the ELOG maintained during the cruise.
attribute event_start long_name String Event Start
attribute event_start nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)
attribute event_start units String dimensionless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double -38.0026, 9.700333
attribute latitude axis String Y
attribute latitude bcodmo_name String lat_start
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude at the time the event started (from the cruise event log).
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 source_name String lat_start
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 -55.299424, -24.000749
attribute longitude axis String X
attribute longitude bcodmo_name String lon_start
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude at the time the event started (from the cruise event log).
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 source_name String lon_start
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable niskin   byte  
attribute niskin _FillValue byte 127
attribute niskin actual_range byte 1, 24
attribute niskin bcodmo_name String bot_Nis
attribute niskin description String Niskin bottle number.
attribute niskin long_name String Niskin
attribute niskin units String dimensionless
variable depth   double  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 5.234, 5532.903
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 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 press   float  
attribute press _FillValue float NaN
attribute press actual_range float 5.263, 5638.131
attribute press bcodmo_name String pressure
attribute press description String Pressure.
attribute press long_name String Press
attribute press nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/ (external link)
attribute press units String decibars (db)
variable bots   byte  
attribute bots _FillValue byte 127
attribute bots actual_range byte 1, 24
attribute bots bcodmo_name String bots
attribute bots description String The full range of Niskin bottles used for the sample collection. For this particular dataset this is equal to the Niskin number.
attribute bots long_name String Bots
attribute bots units String dimensionless
variable PO4   float  
attribute PO4 _FillValue float NaN
attribute PO4 actual_range float 0.0495, 2.4334
attribute PO4 bcodmo_name String PO4
attribute PO4 description String Phosphate.
attribute PO4 long_name String Mass Concentration Of Phosphate In Sea Water
attribute PO4 units String micromoles per liter (umol/L)
variable NO3_NO2   float  
attribute NO3_NO2 _FillValue float NaN
attribute NO3_NO2 actual_range float -0.0329, 35.7392
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.
attribute NO3_NO2 long_name String Mole Concentration Of Nitrate In Sea Water
attribute NO3_NO2 units String micromoles per liter (umol/L)
variable silicate   float  
attribute silicate _FillValue float NaN
attribute silicate actual_range float 0.448, 132.2151
attribute silicate bcodmo_name String SiO4
attribute silicate description String Silicate.
attribute silicate long_name String Mass Concentration Of Silicate In Sea Water
attribute silicate nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/SLCAAAZX/ (external link)
attribute silicate units String micromoles per liter (umol/L)
variable NO2   float  
attribute NO2 _FillValue float NaN
attribute NO2 actual_range float -0.0042, 0.6903
attribute NO2 bcodmo_name String NO2
attribute NO2 colorBarMaximum double 1.0
attribute NO2 colorBarMinimum double 0.0
attribute NO2 description String Nitrite.
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 micromoles per liter (umol/L)
variable NH4   float  
attribute NH4 _FillValue float NaN
attribute NH4 actual_range float 0.0, 2.7319
attribute NH4 bcodmo_name String Ammonium
attribute NH4 colorBarMaximum double 5.0
attribute NH4 colorBarMinimum double 0.0
attribute NH4 description String Ammonium.
attribute NH4 long_name String Mole Concentration Of Ammonium In Sea Water
attribute NH4 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AMONAAZX/ (external link)
attribute NH4 units String micromoles per liter (umol/L)
variable NPOC   double  
attribute NPOC _FillValue double NaN
attribute NPOC actual_range double 33.863424845013, 89.1148168472249
attribute NPOC bcodmo_name String unknown
attribute NPOC description String Non-purgeable organic carbon.
attribute NPOC long_name String NPOC
attribute NPOC units String micromolar (uM)
variable TN   double  
attribute TN _FillValue double NaN
attribute TN actual_range double -0.582144637561226, 39.4832295002114
attribute TN bcodmo_name String unknown
attribute TN description String Total nitrogen.
attribute TN long_name String TN
attribute TN units String micromolar (uM)

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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