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Title Sum-
Institution Dataset ID
   set  data   graph     files  public Radiocarbon DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic
Margin collected from R/V Endeavor cruise EN541 in July 2014
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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 Methodology:
Dissolved inorganic carbon concentration ([DIC]) samples were measured by
acidification and subsequent release of CO2 with a CO2 cavity-ringdown
spectrometer (CRDS; Picarro G1101-i) detector to an accuracy and precision
better than \u00b1 3 umol/kg. Precision is based on a set of 15 duplicates.
Accuracy is based on certified reference materials prepared at the Scripps
Institution of Oceanography of the University of California, San Diego.

Samples for pH were measured spectrophotometrically on board using an Agilent
Cary 100 UV-Visible spectrophotometer and m-cresol purple dye (Clayton and
Byrne, 1993; Liu et al., 2011). The pH values are reported on the total scale
with a precision better than 0.0002 based on duplicate measurements. The
estimated accuracy of spectrophotometric pH is better than 0.002.

Natural radiocarbon samples of DIC (\u220614C-DIC) were analyzed at the W. M.
Keck Carbon Cycle Accelerator Mass Spectrometry Laboratory at the University
of California, Irvine. The accuracy and precision of the \u220614C-DIC
measurements is 0.1\u2030 and 1.7\u2030, respectively.

Sampling and analytical procedures:\u00a0
Discrete seawater samples were collected inside Hudson Canyon, US Atlantic
Margin aboard the R/V Endeavor from 9 - 13 of July 2014. A total 19 stations
and 216 samples were collected along Hudson Canyon and another station was
sampled outside the canyon (station E2-HC2). Samples were collected from a
bottle Rosette following the procedures in SOP 1 and 6b in Dickson et al.,

[DIC] samples were collected in acid washed and combusted 120 mL serum vials.
Vials were allowed to overflow three times their volume, poisoned with 50 uL
of a 55 uM HgCl2, capped, and store at 4 degrees C\u00a0until analysis.

\u220614C-DIC samples were collected in combusted 1L borosilicate bottles,
poisoned with 200 uL of a 55 uM HgCl2, sealed and stored in the dark at room
temperature until isotope analysis.

CH4 concentration analyses were collected by filling 60, 120, or 160 mL glass
serum vials. Vials were filled from the bottom with a length of 1/4\" Tygon
tubing. Vials were flushed with seven vial volumes of seawater to expel any
bubbles and ensure collection of a clean sample, and then were sealed with
butyl rubber stoppers taking care not to introduce bubbles during sealing.
Immediately after sealing, a 10 mL headspace of ultrahigh purity nitrogen was
introduced, displacing an equal volume of water, and the samples were
preserved by adding 25 uL of a saturated solution of mercuric chloride. The
vials were stored inverted to minimize diffusive gas exchange through the
butyl rubber stopper.

CH4 concentration measurements were performed using an Agilent 6850 gas
chromatograph with a flame ionization detector (GC-FID) following established
protocols reported in Weinstein et al. (2016). The uncertainty associated with
these measurements was 5.2% based on duplicate measurements.
attribute NC_GLOBAL awards_0_award_nid String 737781
attribute NC_GLOBAL awards_0_award_number String OCE-1318102
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1318102 (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 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 Hudson Canyon Radiocarbon DIC, DIC, pH, and CH4
collected on cruise EN541
PI: John D. Kessler (University of Rochester)
Contact: Fenix Garcia-Tigreros (University of Rochester)
Version: 30 May 2018
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 2018-05-30T16:36:11Z
attribute NC_GLOBAL date_modified String 2019-03-15T18:45:21Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.737887.1
attribute NC_GLOBAL Easternmost_Easting double -72.20012
attribute NC_GLOBAL geospatial_lat_max double 39.5668
attribute NC_GLOBAL geospatial_lat_min double 39.2878
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -72.20012
attribute NC_GLOBAL geospatial_lon_min double -72.42284
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 681.8
attribute NC_GLOBAL geospatial_vertical_min double 50.0
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/737887 (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 737924
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 bottle Rosette
attribute NC_GLOBAL instruments_1_acronym String AMS
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 737921
attribute NC_GLOBAL instruments_1_description String An AMS measures "long-lived radionuclides that occur naturally in our environment. AMS uses a particle accelerator in conjunction with ion sources, large magnets, and detectors to separate out interferences and count single atoms in the presence of 1x1015 (a thousand million million) stable atoms, measuring the mass-to-charge ratio of the products of sample molecule disassociation, atom ionization and ion acceleration." AMS permits ultra low-level measurement of compound concentrations and isotope ratios that traditional alpha-spectrometry cannot provide. More from Purdue University: http://www.physics.purdue.edu/primelab/introduction/ams.html
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB17/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Accelerator Mass Spectrometer
attribute NC_GLOBAL instruments_1_instrument_nid String 527
attribute NC_GLOBAL instruments_1_supplied_name String W. M. Keck Carbon Cycle Accelerator Mass Spectrometry Laboratory
attribute NC_GLOBAL instruments_2_acronym String Gas Chromatograph
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 737922
attribute NC_GLOBAL instruments_2_description String Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC)
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB02/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Gas Chromatograph
attribute NC_GLOBAL instruments_2_instrument_nid String 661
attribute NC_GLOBAL instruments_2_supplied_name String Agilent 6850 gas chromatograph
attribute NC_GLOBAL instruments_3_acronym String Spectrometer
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 737920
attribute NC_GLOBAL instruments_3_description String A spectrometer is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum.
attribute NC_GLOBAL instruments_3_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0460/ (external link)
attribute NC_GLOBAL instruments_3_instrument_name String Spectrometer
attribute NC_GLOBAL instruments_3_instrument_nid String 667
attribute NC_GLOBAL instruments_3_supplied_name String CO2 cavity-ringdown spectrometer (CRDS; Picarro G1101-i)
attribute NC_GLOBAL instruments_4_acronym String Spectrophotometer
attribute NC_GLOBAL instruments_4_dataset_instrument_nid String 737919
attribute NC_GLOBAL instruments_4_description String An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.
attribute NC_GLOBAL instruments_4_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB20/ (external link)
attribute NC_GLOBAL instruments_4_instrument_name String Spectrophotometer
attribute NC_GLOBAL instruments_4_instrument_nid String 707
attribute NC_GLOBAL instruments_4_supplied_name String Agilent Cary 100 UV-Visible spectrophotometer
attribute NC_GLOBAL instruments_5_acronym String FID
attribute NC_GLOBAL instruments_5_dataset_instrument_nid String 737923
attribute NC_GLOBAL instruments_5_description String A flame ionization detector (FID) is a scientific instrument that measures the concentration of organic species in a gas stream. It is frequently used as a detector in gas chromatography. Standalone FIDs can also be used in applications such as landfill gas monitoring, fugitive emissions monitoring and internal combustion engine emissions measurement in stationary or portable instruments.
attribute NC_GLOBAL instruments_5_instrument_name String Flame Ionization Detector
attribute NC_GLOBAL instruments_5_instrument_nid String 644600
attribute NC_GLOBAL instruments_5_supplied_name String Agilent 6850 gas chromatograph with a flame ionization detector (GC-FID)
attribute NC_GLOBAL keywords String age, altimetry, bco, bco-dmo, biological, c14, C14_DIC_age, ch3, chemical, chemistry, conductivity, cruise, Cruise_ID, ctd, CTD_hex_file, d14, d14C_DIC, data, dataset, date, density, depth, dic, dmo, earth, Earth Science > Oceans > Ocean Chemistry > pH, erddap, file, GMT_Date, GMT_Time, hex, iso, laboratory, latitude, longitude, management, ocean, oceanography, oceans, office, preliminary, pressure, reported, sal, satellite, scale, science, sea, sea_water_ph_reported_on_total_scale, seawater, sonde, station, Station_ID, temperature, time, total, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/737887/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/737887 (external link)
attribute NC_GLOBAL Northernmost_Northing double 39.5668
attribute NC_GLOBAL param_mapping String {'737887': {'Latitude': 'flag - latitude', 'depth': 'flag - depth', 'ISO_DateTime': 'flag - time', 'Longitude': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/737887/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of Rochester
attribute NC_GLOBAL people_0_person_name String John D. Kessler
attribute NC_GLOBAL people_0_person_nid String 737785
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 University of Rochester
attribute NC_GLOBAL people_1_person_name String Fenix Garcia-Tigreros
attribute NC_GLOBAL people_1_person_nid String 737788
attribute NC_GLOBAL people_1_role String Contact
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Shannon Rauch
attribute NC_GLOBAL people_2_person_nid String 51498
attribute NC_GLOBAL people_2_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String Aerobic methane oxidation
attribute NC_GLOBAL projects_0_acronym String Aerobic methane oxidation
attribute NC_GLOBAL projects_0_description String NSF Award Abstract:
Roughly 8 billion moles of methane (CH4) were emitted in 83 days during the Deepwater Horizon disaster in the northern Gulf of Mexico in 2010. Interestingly, none of this CH4 was emitted to the atmosphere, but instead stayed dissolved and suspended as "plume" or "intrusion" layers approximately 1000m below the ocean surface. Based on measurements of CH4 concentration and oxidation rates, dissolved oxygen anomalies, and microbial community structure as well as a CH4 geochemical model, it was determined that all the CH4 emitted during this disaster was respired within 120 days of the initial well blowout. In addition, the methanotrophic bacteria responsible for the oxidation of this CH4 appeared to experience all stages of microbial growth, limited only by the availability of CH4. This finding suggests that releases of CH4 into deepwater, be them anthropogenic or natural, will have minimal direct influence on the radiative budget of the atmosphere.
The major weakness in these previous investigations is that CH4 related parameters were only measured at the beginning (May - June 2010) and end (September - October 2010) of this massive CH4 feast, primarily because the rapid demise of CH4 was unanticipated. Thus, the time- and growth phase-dependent understanding of the kinetics of this bloom response is only based on model interpolation between endpoints. A more complete, and measurement-based, understanding of the chemical kinetics is necessary to predict an oceanographic environment's ability to respire large CH4 perturbations. And while measurements of CH4 stable isotopes in theory can be used to assess the extent that the released CH4 has been oxidized, this kinetic isotope effect can only be used in a quantitative fashion if it is known how the isotopic fractionation factor changes with varying chemical and temperature conditions and throughout all stages of the microbial bloom.
In this study, researchers at the Texas A & M University will test two fundamental hypotheses relating to aerobic CH4 oxidation and ultimately produce a thorough characterization of the time-, growth phase-, and temperature-dependency of CH4 oxidation rates, oxidation rate constants, and isotopic fractionation factors. Hypothesis 1: Excluding mixing processes, the bacterial response to a large CH4 perturbation will be limited primarily by the availability of CH4 or dissolved oxygen. Hypothesis 2: Without knowing the stage of microbial growth, measurements of natural stable isotopes of CH4 and dissolved carbon (organic and/or inorganic) cannot be used to assess the extent of CH4 oxidation in situations of large CH4 perturbations. In order to test these hypotheses, with the goal of disproving hypothesis 2, a suite of mesocosm and pure culture incubations will be conducted. Throughout these incubations, concentrations of CH4 and dissolved inorganic carbon as well as their 13C isotopes will be measured in extremely high resolution with new equipment and experimental designs. In addition, dissolved oxygen, nutrient concentrations, trace metals, CH4 oxidation rates, and microbial community structure will be measured.
Broader Impacts. In addition to the normal dissemination of results in publications, meeting presentations, and on a project web site, this work will have strong educational and research impacts with close interactions between the PIs, postdoctoral scholar, graduate student, and undergraduate researchers with collaborations between Texas A&M University and the University of California Santa Barbara. The students will have extended visits at each lab for skill development, knowledge transfer, and general academic growth. During 2010, an informal collaboration was established with Ms. Vicki Soutar, a high school science teacher in Watkinsville, GA, to develop high school science laboratory exercises using real scientific data. This proposed project will involve Ms. Soutar to formalize, enhance, extend, and disseminate the products of this collaboration
attribute NC_GLOBAL projects_0_end_date String 2016-02
attribute NC_GLOBAL projects_0_name String Investigating the chemical and isotopic kinetics of aerobic methane oxidation
attribute NC_GLOBAL projects_0_project_nid String 737782
attribute NC_GLOBAL projects_0_start_date String 2012-12
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 39.2878
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String Cruise_ID
attribute NC_GLOBAL summary String Radiocarbon DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic Margin collected from R/V Endeavor cruise EN541 in July 2014.
attribute NC_GLOBAL time_coverage_end String 2014-07-13T01:43:43Z
attribute NC_GLOBAL time_coverage_start String 2014-07-09T14:46:14Z
attribute NC_GLOBAL title String Radiocarbon DIC, DIC concentration, pH, and [CH4] in Hudson Canyon, northern US Atlantic Margin collected from R/V Endeavor cruise EN541 in July 2014
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -72.42284
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 identifier (EN = R/V Endeavor)
attribute Cruise_ID long_name String Cruise ID
attribute Cruise_ID units String unitless
variable CTD_hex_file   String  
attribute CTD_hex_file bcodmo_name String cast
attribute CTD_hex_file description String CTD hex file name
attribute CTD_hex_file long_name String CTD Hex File
attribute CTD_hex_file units String untiless
variable Station_ID   String  
attribute Station_ID bcodmo_name String station
attribute Station_ID description String Cruise station identifier
attribute Station_ID long_name String Station ID
attribute Station_ID units String unitless
variable GMT_Date   String  
attribute GMT_Date bcodmo_name String date_gmt
attribute GMT_Date description String Date GMT (yyyy-mm-dd)
attribute GMT_Date long_name String GMT Date
attribute GMT_Date time_precision String 1970-01-01
attribute GMT_Date units String unitless
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.404917174E9, 1.405215823E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Date and time formatted to ISO8601 standard: yyyy-mm-ddTHH:MM:SS
attribute time ioos_category String Time
attribute time long_name String ISO Date Time
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 1970-01-01T00:00:00Z
attribute time units String seconds since 1970-01-01T00:00:00Z
variable GMT_Time   String  
attribute GMT_Time bcodmo_name String time_gmt
attribute GMT_Time description String Time GMT (HH:MM:SS)
attribute GMT_Time long_name String GMT Time
attribute GMT_Time units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 39.2878, 39.5668
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 at start of CTD cast
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 -72.42284, -72.20012
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 West at start of CTD cast
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   double  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 50.0, 681.8
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 Niskin bottle depth (m) at sample collection
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 pressure   float  
attribute pressure _FillValue float NaN
attribute pressure actual_range float 50.4, 688.2
attribute pressure bcodmo_name String pressure
attribute pressure description String Pressure at sample collection
attribute pressure long_name String Pressure
attribute pressure nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/ (external link)
attribute pressure units String Digiquartz (db)
variable temp   float  
attribute temp _FillValue float NaN
attribute temp actual_range float 5.27, 18.35
attribute temp bcodmo_name String temperature
attribute temp description String Temperature at sample collection
attribute temp long_name String Temperature
attribute temp nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/ (external link)
attribute temp units String Degrees Celsius
variable sal   float  
attribute sal _FillValue float NaN
attribute sal actual_range float 35.01, 36.05
attribute sal bcodmo_name String sal
attribute sal description String Salinity at sample collection
attribute sal long_name String Sal
attribute sal nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/ (external link)
attribute sal units String Practical (PSU)
variable Density   double  
attribute Density _FillValue double NaN
attribute Density actual_range double 1025.87, 1030.82
attribute Density bcodmo_name String density
attribute Density description String Density at sample collection
attribute Density long_name String Density
attribute Density units String kilograms per cubic meter (Kg/m^3)
variable pH   float  
attribute pH _FillValue float NaN
attribute pH actual_range float 7.7873, 8.0595
attribute pH bcodmo_name String pH
attribute pH colorBarMaximum double 9.0
attribute pH colorBarMinimum double 7.0
attribute pH description String Spectrophotometric pH measured at 25 C using the total hydrogen ion scale
attribute pH long_name String Sea Water Ph Reported On Total Scale
attribute pH nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PHXXZZXX/ (external link)
attribute pH units String Unitless; pH scale
variable DIC   float  
attribute DIC _FillValue float NaN
attribute DIC actual_range float 1319.47, 2259.43
attribute DIC bcodmo_name String DIC
attribute DIC description String Dissolved Inorganic Carbon concentration
attribute DIC long_name String DIC
attribute DIC units String micromoles per kilogram (umol/kg)
variable CH3   float  
attribute CH3 _FillValue float NaN
attribute CH3 actual_range float 1.97, 334.68
attribute CH3 bcodmo_name String CH4
attribute CH3 description String Dissolved methane concentration
attribute CH3 long_name String CH3
attribute CH3 units String nanomolar (nM)
variable d14C_DIC   float  
attribute d14C_DIC _FillValue float NaN
attribute d14C_DIC actual_range float -28.5, 41.8
attribute d14C_DIC bcodmo_name String unknown
attribute d14C_DIC description String Natural radiocarbon of DIC
attribute d14C_DIC long_name String D14 C DIC
attribute d14C_DIC units String Per mil (‰)
variable C14_DIC_age   String  
attribute C14_DIC_age bcodmo_name String unknown
attribute C14_DIC_age description String Age of DIC
attribute C14_DIC_age long_name String C14 DIC Age
attribute C14_DIC_age units String Years before present

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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