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Title Sum-
Institution Dataset ID
     data   graph     files  public Depth profiles of the isotopic composition (d30Si) of silicon within dissolved silicic acid
on the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015
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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 Samples collected from Niskin bottles using the GEOTRACES ODF CTD-rosette
system. (Note on niskin trip depths reported in dataset: multiple bottles were
tripped to collect sample water; these samples were linked to the Niskin
number having both oxygen and salinity bottle data.)

Seawater samples for \u03b430Si measurements were collected using a
Oceanographic Data Facilitiy\u2019s (ODF, Scripps Institution of Oceanography)
CTD-rosette mounted with Niskin samplers and a Sea-Bird Electronics CTD
(SBE9plus). Seawater was gravity filtered into polypropylene containers
through in-line Supor filter capsules (0.8/0.45 \u00b5m) attached directly to
each Niskin bottle. Sample bottles were capped and stored without preservative
in the dark.

Back in the laboratory, the silicon from seawater was precipitated of as
trimethylamine silicomolybdate using a high purity triethlyamine ammonium
molybdate solution (TEA-Moly). The precipitate was isolated by filtration onto
a polycarbonate filter and purified by high temperature combustion to produce
solid silicon dioxide. SiO2 was then converted to solid Cs2SiF6 by dissolution
in HF and addition of CsCl. The Cs2SiF6 was rinsed with ethanol, dried and
dissolved in high purity (>18M\u03a9) water. BaSiF6 was precipitated by the
addition of BaCl, rinsed with ethanol and dried.

Isotopic ratio analysis was performed using a Nu Perspective isotope ratio
mass spectrometer equipped with a Nu Sil inlet system. Samples as BaSiF6 are
loaded into sample vials that are placed in a sample carousel in the Nu Sil.
Samples are sequentially heated to 590\u00b0C.

Isotope delta values are normalized against the international standard NBS28.

For more information, see the Protocol document\u00a0(under Supplemental
attribute NC_GLOBAL awards_0_award_nid String 809607
attribute NC_GLOBAL awards_0_award_number String OCE-1434305
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1434305 (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 Silicon Stable Isotopes
U.S. GEOTRACES Arctic - HLY1502 (GN01)
PI: Mark Brzezinski (UCSB)
Contact: Janice Jones (UCSB)
Version date: 17 April 2020
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 2020-04-17T16:17:51Z
attribute NC_GLOBAL date_modified String 2020-04-20T14:41:35Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.26008/1912/bco-dmo.809612.1
attribute NC_GLOBAL Easternmost_Easting double 179.1997
attribute NC_GLOBAL geospatial_lat_max double 89.9876
attribute NC_GLOBAL geospatial_lat_min double 65.8093
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double 179.1997
attribute NC_GLOBAL geospatial_lon_min double -179.8086
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 4200.1
attribute NC_GLOBAL geospatial_vertical_min double 2.0
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/809612 (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_description String Samples were collected from Niskin bottles using the GEOTRACES ODF CTD-rosette system.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 809622
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_1_acronym String CTD Sea-Bird
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Seawater samples for δ30Si measurements were collected using a Oceanographic Data Facilitiy’s (ODF, Scripps Institution of Oceanography) CTD-rosette mounted with Niskin samplers and a Sea-Bird Electronics CTD (SBE9plus).
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 809623
attribute NC_GLOBAL instruments_1_description String Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/130/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String CTD Sea-Bird
attribute NC_GLOBAL instruments_1_instrument_nid String 447
attribute NC_GLOBAL instruments_1_supplied_name String SBE9plus
attribute NC_GLOBAL instruments_2_acronym String IR Mass Spec
attribute NC_GLOBAL instruments_2_dataset_instrument_description String Isotopic ratio analysis was performed using a Nu Perspective isotope ratio mass spectrometer equipped with a Nu Sil inlet system.
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 809624
attribute NC_GLOBAL instruments_2_description String The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).
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 Isotope-ratio Mass Spectrometer
attribute NC_GLOBAL instruments_2_instrument_nid String 469
attribute NC_GLOBAL instruments_2_supplied_name String Nu Perspective isotope ratio mass spectrometer
attribute NC_GLOBAL keywords String 5ib7da, bco, bco-dmo, biological, bottle, chemical, chemistry, concentration, data, dataset, date, delta, depth, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Silicate, end, End_Date_UTC, End_ISO_DateTime_UTC, End_Latitude, End_Longitude, End_Time_UTC, erddap, event, Event_ID, flag, Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da, iso, latitude, longitude, management, mass, mass_concentration_of_silicate_in_sea_water, ocean, oceanography, oceans, office, preliminary, sample, Sample_Depth, Sample_ID, science, SD1_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da, sea, seawater, silicate, SILICATE_30_28_D_DELTA_BOTTLE_5ib7da, start, Start_Date_UTC, Start_Time_UTC, station, Station_ID, time, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/809612/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/809612 (external link)
attribute NC_GLOBAL Northernmost_Northing double 89.9876
attribute NC_GLOBAL param_mapping String {'809612': {'Start_ISO_DateTime_UTC': 'flag - time', 'Sample_Depth': 'flag - depth', 'Start_Longitude': 'flag - longitude', 'Start_Latitude': 'flag - latitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/809612/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of California-Santa Barbara
attribute NC_GLOBAL people_0_affiliation_acronym String UCSB-MSI
attribute NC_GLOBAL people_0_person_name String Mark A. Brzezinski
attribute NC_GLOBAL people_0_person_nid String 50663
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 California-Santa Barbara
attribute NC_GLOBAL people_1_affiliation_acronym String UCSB
attribute NC_GLOBAL people_1_person_name String Janice L. Jones
attribute NC_GLOBAL people_1_person_nid String 51661
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 U.S. GEOTRACES Arctic,GEOTRACES Arctic Si Isotopes
attribute NC_GLOBAL projects_0_acronym String U.S. GEOTRACES Arctic
attribute NC_GLOBAL projects_0_description String Description from NSF award abstract:
In pursuit of its goal "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions", in 2015 the International GEOTRACES Program will embark on several years of research in the Arctic Ocean. In a region where climate warming and general environmental change are occurring at amazing speed, research such as this is important for understanding the current state of Arctic Ocean geochemistry and for developing predictive capability as the regional ecosystem continues to warm and influence global oceanic and climatic conditions. The three investigators funded on this award, will manage a large team of U.S.scientists who will compete through the regular NSF proposal process to contribute their own unique expertise in marine trace metal, isotopic, and carbon cycle geochemistry to the U.S. effort. The three managers will be responsible for arranging and overseeing at-sea technical services such as hydrographic measurements, nutrient analyses, and around-the-clock management of on-deck sampling activites upon which all participants depend, and for organizing all pre- and post-cruise technical support and scientific meetings. The management team will also lead educational outreach activities for the general public in Nome and Barrow, Alaska, to explain the significance of the study to these communities and to learn from residents' insights on observed changes in the marine system. The project itself will provide for the support and training of a number of pre-doctoral students and post-doctoral researchers. Inasmuch as the Arctic Ocean is an epicenter of global climate change, findings of this study are expected to advance present capability to forecast changes in regional and globlal ecosystem and climate system functioning.
As the United States' contribution to the International GEOTRACES Arctic Ocean initiative, this project will be part of an ongoing multi-national effort to further scientific knowledge about trace elements and isotopes in the world ocean. This U.S. expedition will focus on the western Arctic Ocean in the boreal summer of 2015. The scientific team will consist of the management team funded through this award plus a team of scientists from U.S. academic institutions who will have successfully competed for and received NSF funds for specific science projects in time to participate in the final stages of cruise planning. The cruise track segments will include the Bering Strait, Chukchi shelf, and the deep Canada Basin. Several stations will be designated as so-called super stations for intense study of atmospheric aerosols, sea ice, and sediment chemistry as well as water-column processes. In total, the set of coordinated international expeditions will involve the deployment of ice-capable research ships from 6 nations (US, Canada, Germany, Sweden, UK, and Russia) across different parts of the Arctic Ocean, and application of state-of-the-art methods to unravel the complex dynamics of trace metals and isotopes that are important as oceanographic and biogeochemical tracers in the sea.
attribute NC_GLOBAL projects_0_end_date String 2017-06
attribute NC_GLOBAL projects_0_geolocation String Arctic Ocean; Sailing from Dutch Harbor to Dutch Harbor
attribute NC_GLOBAL projects_0_name String U.S. Arctic GEOTRACES Study
attribute NC_GLOBAL projects_0_project_nid String 638812
attribute NC_GLOBAL projects_0_start_date String 2014-07
attribute NC_GLOBAL projects_1_acronym String GEOTRACES Arctic Si Isotopes
attribute NC_GLOBAL projects_1_description String NSF Award Abstract:
An investigator will participate in the 2015 U.S. GEOTRACES Arctic Ocean expedition and measure silicon isotopes composition of silicic acid in seawater samples, as well as diatoms and sea ice. In common with other multinational initiatives in the International GEOTRACES program, the goals of the U.S. Arctic expedition are to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. Some trace elements are essential to life, others are known biological toxins, and still others are important because they can be used as tracers of a variety of physical, chemical, and biological processes in the sea. As silicon is a key component of diatom shells, the measurement of their concentrations in this study can provide an important indicator of primary productivity, both in the present day, as well as past oceans. The project will provide training for undergraduate students and a post-doctoral researcher in silicon chemistry, as well as include outreach to K-12 students.
The silicon isotope proxy is increasingly being used to assess the role of diatoms and silicic acid supply to past shifts in ocean productivity and their role in Earth's climate. Application of the proxy requires knowledge of the silicon isotopic composition of ventilating water masses. Uncertainty in these values translates directly into uncertainty in the level of productivity implied by the proxy. The growing global data set of silicon isotopes in marine waters suggest that silicon isotopes in subsurface waters are not uniform, but vary systematically driven by interactions between silicon isotope fractionation, the biological pump and thermohaline circulation. In addition, significant anomalies exist between model predictions and observations. In this study, researchers will test hypotheses regarding the origin of this signal and the mechanisms controlling silicon isotope distributions within the Arctic Ocean by greatly expanding the silicon isotope data set for this region. The overarching hypothesis to be tested is that silicon isotope distributions are controlled by the coupling of silicon fractionation during silica production and during silica dissolution to the biological pump and to the meridional overturning circulation.
attribute NC_GLOBAL projects_1_end_date String 2019-12
attribute NC_GLOBAL projects_1_name String GEOTRACES Arctic Section: Diagnosing the unique silicon isotope composition of the Arctic Ocean
attribute NC_GLOBAL projects_1_project_nid String 809608
attribute NC_GLOBAL projects_1_start_date String 2015-01
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 65.8093
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String The isotopic composition of dissolved silicon (\u03b430Si) has proven to be a powerful tool to better understand the marine Si cycle. The \u03b430Si of seawater carries information about DSi utilization in surface waters, the subsequent dissolution of sinking biogenic material as well as water mass mixing. This data set supplies information on the spatial distribution of isotopes of Si within water masses in the Arctic Ocean from the Bering Strait to the north pole. Profiles of silicon isotopes within silicic acid, \u03b430Si(OH)4, were obtained at a total of 15 stations on the GEOTRACES GN01 cruise
attribute NC_GLOBAL time_coverage_end String 2015-10-07T16:02Z
attribute NC_GLOBAL time_coverage_start String 2015-08-16T07:23Z
attribute NC_GLOBAL title String Depth profiles of the isotopic composition (d30Si) of silicon within dissolved silicic acid on the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -179.8086
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Station_ID   byte  
attribute Station_ID _FillValue byte 127
attribute Station_ID actual_range byte 4, 66
attribute Station_ID bcodmo_name String station
attribute Station_ID description String Sampling station
attribute Station_ID long_name String Station ID
attribute Station_ID units String unitless
variable Start_Date_UTC   String  
attribute Start_Date_UTC bcodmo_name String date
attribute Start_Date_UTC description String CTD start date (UTC); format: yyyy-mm-dd
attribute Start_Date_UTC long_name String Start Date UTC
attribute Start_Date_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute Start_Date_UTC time_precision String 1970-01-01
attribute Start_Date_UTC units String unitless
variable Start_Time_UTC   String  
attribute Start_Time_UTC bcodmo_name String time
attribute Start_Time_UTC description String CTD start time (UTC); format: HH:MM
attribute Start_Time_UTC long_name String Start Time UTC
attribute Start_Time_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/ (external link)
attribute Start_Time_UTC units String unitless
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.43970978E9, 1.44423372E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String CTD start date and time (UTC) in ISO8601 format: yyyy-mm-ddTHH:MMZ
attribute time ioos_category String Time
attribute time long_name String Start 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 Start_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 End_Date_UTC   String  
attribute End_Date_UTC bcodmo_name String date
attribute End_Date_UTC description String CTD end date (UTC); format: yyyy-mm-dd
attribute End_Date_UTC long_name String End Date UTC
attribute End_Date_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute End_Date_UTC time_precision String 1970-01-01
attribute End_Date_UTC units String unitless
variable End_Time_UTC   String  
attribute End_Time_UTC bcodmo_name String time
attribute End_Time_UTC description String CTD end time (UTC); format: HH:MM
attribute End_Time_UTC long_name String End Time UTC
attribute End_Time_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/ (external link)
attribute End_Time_UTC units String unitless
variable End_ISO_DateTime_UTC   String  
attribute End_ISO_DateTime_UTC bcodmo_name String ISO_DateTime_UTC
attribute End_ISO_DateTime_UTC description String CTD end date and time (UTC) in ISO8601 format: yyyy-mm-ddTHH:MMZ
attribute End_ISO_DateTime_UTC long_name String End ISO Date Time UTC
attribute End_ISO_DateTime_UTC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute End_ISO_DateTime_UTC time_precision String 1970-01-01T00:00Z
attribute End_ISO_DateTime_UTC units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 65.8093, 89.9876
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 CTD start latitude in decimal degrees
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 Start_Latitude
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 -179.8086, 179.1997
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 CTD start longitude in decimal degrees
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 Start_Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable End_Latitude   float  
attribute End_Latitude _FillValue float NaN
attribute End_Latitude actual_range float 65.8093, 89.9881
attribute End_Latitude bcodmo_name String latitude
attribute End_Latitude colorBarMaximum double 90.0
attribute End_Latitude colorBarMinimum double -90.0
attribute End_Latitude description String CTD end latitude in decimal degrees
attribute End_Latitude long_name String Latitude
attribute End_Latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute End_Latitude standard_name String latitude
attribute End_Latitude units String decimal degrees
variable End_Longitude   float  
attribute End_Longitude _FillValue float NaN
attribute End_Longitude actual_range float -179.81, 179.3519
attribute End_Longitude bcodmo_name String longitude
attribute End_Longitude colorBarMaximum double 180.0
attribute End_Longitude colorBarMinimum double -180.0
attribute End_Longitude description String CTD end longitude in decimal degrees
attribute End_Longitude long_name String Longitude
attribute End_Longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute End_Longitude standard_name String longitude
attribute End_Longitude units String decimal degrees
variable Event_ID   short  
attribute Event_ID _FillValue short 32767
attribute Event_ID actual_range short 6036, 6484
attribute Event_ID bcodmo_name String event
attribute Event_ID description String Geotraces event number
attribute Event_ID long_name String Event ID
attribute Event_ID nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)
attribute Event_ID units String unitless
variable Sample_ID   short  
attribute Sample_ID _FillValue short 32767
attribute Sample_ID actual_range short 10613, 12306
attribute Sample_ID bcodmo_name String sample
attribute Sample_ID description String Geotraces sample number
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 depth   double  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 2.0, 4200.1
attribute depth axis String Z
attribute depth bcodmo_name String depth
attribute depth description String Niskin trip depth. Multiple bottles were tripped to collect sample water; our samples were linked to the Niskin number having both oxygen and salinity bottle data.
attribute depth ioos_category String Location
attribute depth long_name String Sample 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 SILICATE_30_28_D_DELTA_BOTTLE_5ib7da   float  
attribute SILICATE_30_28_D_DELTA_BOTTLE_5ib7da _FillValue float NaN
attribute SILICATE_30_28_D_DELTA_BOTTLE_5ib7da actual_range float 1.46, 2.8
attribute SILICATE_30_28_D_DELTA_BOTTLE_5ib7da bcodmo_name String Si
attribute SILICATE_30_28_D_DELTA_BOTTLE_5ib7da description String mean delta30Si(OH)4 relative to the NBS28 standard
attribute SILICATE_30_28_D_DELTA_BOTTLE_5ib7da long_name String Mass Concentration Of Silicate In Sea Water
attribute SILICATE_30_28_D_DELTA_BOTTLE_5ib7da units String per mil
variable SD1_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da   float  
attribute SD1_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da _FillValue float NaN
attribute SD1_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da actual_range float 0.0, 0.2
attribute SD1_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da bcodmo_name String Si
attribute SD1_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da description String std dev delta30Si(OH)4 relative to the NBS28 standard
attribute SD1_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da long_name String Mass Concentration Of Silicate In Sea Water
attribute SD1_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da units String per mil
variable Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da   byte  
attribute Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da _FillValue byte 127
attribute Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da actual_range byte 1, 9
attribute Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da bcodmo_name String q_flag
attribute Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da colorBarMaximum double 150.0
attribute Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da colorBarMinimum double 0.0
attribute Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da description String quality flag for SILICATE_30_28_D_DELTA_BOTTLE_5ib7da: 1 Good =  Passed documented required QC tests; 2 = Not evaluated, not available or unknown: Used for data when no QC test performed or the information on quality is not available; 3 = Questionable/suspect: Failed non-critical documented metric or subjective test(s); 4 = Bad: Failed critical documented QC test(s) or as assigned by the data provider; 9 = Missing data: Used as place holder when data are missing.
attribute Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da long_name String Flag SILICATE 30 28 D DELTA BOTTLE 5ib7da
attribute Flag_SILICATE_30_28_D_DELTA_BOTTLE_5ib7da units String unitless

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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