gov.noaa.nodc:0240685 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2025-11-29T07:38:15Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Dissolved inorganic carbon (DIC), total alkalinity (TA), pH, discrete pCO2, methane, nutrients, dissolved oxygen, water temperature, salinity and other measurements collected from discrete samples and profile observations via opportunistic sampling on the United Nations Convention on the Law of the Sea (UNCLOS) CCGS Louis S. St-Laurent cruises 2014-10, 2015-05, and 2016-15 by Natural Resources of Canada (NRCan) in the Arctic Ocean, Beaufort Sea and Canada Basin from 2014-08-28 to 2016-09-13 (NCEI Accession 0240685) 2021-09-01 publication 2025-09-03 revision 2021-08-30 creation International DOI Foundation (IDF) 10.25921/2gj7-e547 NOAA National Centers for Environmental Information gov.noaa.nodc:0240685 NCEI Archive Management System 0240685 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Reid Steele Fisheries and Oceans Canada, Marine Environmental Data Section (MEDS) Reid.Steele@dfo-mpo.gc.ca http://www.meds-sdmm.dfo-mpo.gc.ca/isdm-gdsi/index-eng.html HTTP Fisheries and Oceans Canada, Marine Environmental Data Section (MEDS) website Institution web page information resourceProvider Bedford Institute of Oceanography (BIO) resourceProvider Kumiko Azetsu-Scott Bedford Institute of Oceanography (BIO) Kumiko.Azetsu-Scott@dfo-mpo.gc.ca principalInvestigator Jane Eert Bedford Institute of Oceanography (BIO) principalInvestigator Sarah Zimmermann Bedford Institute of Oceanography (BIO) principalInvestigator Azetsu-Scott, Kumiko Bedford Institute of Oceanography (BIO) author Eert, Jane Bedford Institute of Oceanography (BIO) author Zimmermann, Sarah Bedford Institute of Oceanography (BIO) author Bedford Institute of Oceanography (BIO) contributor Department of Fisheries and Oceans Canada (DFO) https://www.canada.ca/en/fisheries-oceans.html HTTPS Department of Fisheries and Oceans Canada (DFO) website Institution web page information contributor tableDigital This dataset includes discrete sample and profile data collected during United Nations Convention on the Law of the Sea (UNCLOS) cruises 2014-10, 2015-05, and 2016-15 by Natural Resources of Canada (NRCan) in the Arctic Ocean, Beaufort Sea and Canada Basin from 2014-08-28 to 2016-09-13. These data include dissolved inorganic carbon (DIC), total alkalinity (TA), pH, pCO2, methane, nutrients, dissolved oxygen, water temperature, salinity and other measurements. The United Nations Convention on the Law of the Sea (UNCLOS) cruise was conducted by Natural Resources of Canada (NRCan). Samples for Dissolved Inorganic Carbon and Total Alkalinity were collected on board of Louis St. Larent in the Beaufort Sea and the Canada Basin. To fill the data gap in the high Arctic Ocean, data were collected in the opportunistic manner. Funding Information: Government of Canada: Fisheries and Oceans Canada (Aquatic Climate Change Adaptation Services Program (ACCASP), 881-15K-96036) completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded NCEI Accession 0240685 was revised and a new version of the archival package was published. Updates to existing archival packages may provide additional files or replace obsolete files. The latest version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. Please see journal.txt in the /about directory for additional details on changes made. https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0240685 Preview graphic PNG 0240685 NCEI ACCESSION NUMBER 2021-08-26 publication Delta Oxygen-18 DISSOLVED INORGANIC CARBON (DIC) DISSOLVED OXYGEN Methane (CH4) nitrate + nitrite content (concentration) partial pressure of carbon dioxide - water pH phosphate SALINITY silicate total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS carbon dioxide (CO2) gas analyzer CTD Niskin bottle nutrient autoanalyzer oxygen sensor spectrophotometer temperature sensor titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample physical profile theme NODC OBSERVATION TYPES THESAURUS CCGS Louis S. St-Laurent platform NODC PLATFORM NAMES THESAURUS Bedford Institute of Oceanography Department of Fisheries and Oceans Canada dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS Bedford Institute of Oceanography dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP) project NODC PROJECT NAMES THESAURUS Arctic Ocean Beaufort Sea place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication CA/DFO > Fisheries and Oceans, Canada CA/DFO/BIO > Bedford Institute of Oceanography, Fisheries and Oceans, Canada dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian 2014-10 2015-05 2016-15 project Cruise ID 18SN20140828 18SN20150819 18SN20160811 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords Arctic Ocean project Reference Section ID UNCLOS High Arctic Monitoring project Research Projects EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Discrete measurement Profile theme OCADS Study Type ALKALI CFC-12 CH4 CTDOXY CTDSAL CTDTMP OXYGEN PH_TOT SALNTY SF6 SiO3, NO3, NO2, PO4 TCARBN pCO2 theme Provider Variable Abbreviations AUTOANALYZER > AUTOANALYZER CO2 ANALYZERS > CO2 ANALYZERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES OPTSPEC > Optical Spectrometer OXYGEN METERS > OXYGEN METERS TEMPERATURE SENSORS > TEMPERATURE SENSORS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Ships platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian LOUIS S. ST-LAURENT (call sign: CGBN, ICES code: 18SN, 1969-) platform ICES/SeaDataNet Ship Codes OCEAN > ARCTIC OCEAN OCEAN > ARCTIC OCEAN > BEAUFORT SEA place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Arctic Ocean Beaufort Sea place Provider Geographic Names accessLevel: Public otherRestrictions Cite as: Azetsu-Scott, Kumiko; Eert, Jane; Zimmermann, Sarah (2021). Dissolved inorganic carbon (DIC), total alkalinity (TA), pH, discrete pCO2, methane, nutrients, dissolved oxygen, water temperature, salinity and other measurements collected from discrete samples and profile observations via opportunistic sampling on the United Nations Convention on the Law of the Sea (UNCLOS) CCGS Louis S. St-Laurent cruises 2014-10, 2015-05, and 2016-15 by Natural Resources of Canada (NRCan) in the Arctic Ocean, Beaufort Sea and Canada Basin from 2014-08-28 to 2016-09-13 (NCEI Accession 0240685). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/2gj7-e547. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. Arctic Ocean Cruises 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/CLIVAR_Arctic_Ocean.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/CLIVAR_Arctic_Ocean.html related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital crossReference project NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system 2022-04 publication https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system HTTPS https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system OCADS website information NOAA National Centers for Environmental Information author NOAA National Centers for Environmental Information (NCEI) publisher documentDigital [accessed 2024-02-08] crossReference program eng; USA utf8 environment oceans 49.77 -5.914 70.554 89.969 2014-08-28 2016-09-13 In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number. NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Originator data format 0.836 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0240685.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.25921/2gj7-e547 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/240685 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/240685 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0186/0240685/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0240685 v1.1 was published. 2021-09-01T23:25:09Z NCEI Accession 0240685 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0240685/1.1 HTTPS NCEI Accession 0240685 v1.1 published 2021-09-01T23:25:09Z download NCEI Accession 0240685 was revised and v2.2 was published. Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. 2025-09-03T16:02:27Z NCEI Accession 0240685 v2.2 publication https://www.ncei.noaa.gov/archive/accession/0240685/2.2 HTTPS NCEI Accession 0240685 v2.2 published 2025-09-03T16:02:27Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: umol / kg; Observation type: discrete; Measured or calculated: measured; Sampling instrument: CTD and rosette bottle sampler: Niskin bottle; 10 L; Analyzing instrument: SOMMA with UIC 5011 coulometer; Detailed sampling and analyzing information: Seawater samples were collected from standard depths in 500 mL borosilicate glass reagent bottles. Five mL of water was removed to allow room for thermal expansion and the sample was preserved within 30 minutes of collection with 0.1 mL of a mercuric chloride saturated solution; then sealed with Apiezon M grease and the ground glass stoppers secured in place with rubber bands. The samples were stored at room temperature until on-shore laboratory analysis. The samples were analysed for DIC using a SOMMA sample handling system in conjunction with a coulometer (UIC Inc.) to quantify total CO2 purged from the acidified sample. Measurements of a Certified reference material seawater (CRMs; Scripps Oceanographic Institution) were used for calibrating DIC with each batch of 20 samples being bracketed by duplicate CRM measurements.; Replicate information: Referenced to duplicate measurement of CRM prior to; and following; each daily batch of DIC samples; Standardization description: Referenced to duplicate measurement of CRM prior to each daily batch of DIC; Standardization frequency: To bracket each batch of 20 samples; CRM manufacturer: Andrew Dickson's Lab at Scripps Institute of Oceanography (co2crms@ucsd.edu); CRM batch number: 139; 141; Preservation method: Mercuric chloride saturated solution; Preservative volume: 100 uL per 500 ml sample bottle = 0.02%; Preservative correction: None; Uncertainty: 0.0015 umol.kg; Quality flag convention: 1 = Sample drawn from bottle but analysis not recieved; 2 = QC Performed: Acceptable Measurement; 3 = QC Performed: Questionable Measurement; 4 = QC Performed: Bad Measurement; 5 = QC Performed: Not Reported; 6 = Mean of replicate measurements; 7 = Manual chromatographic peak measurement; 8 = Irregular digital chromatographic peak integration; 9 = Not sampled; Method reference: Dickson; A.G.; Sabine; C.L. and Christian; J.R. (Eds.) 2007. Guide to Best Practices for Ocean CO2 Measurements. PICES Special Publication 3; 191 pp.; https://cdiac.ess-dive.lbl.gov/ftp/oceans/Handbook_2007/Guide_all_in_one.pdf; Researcher name: Kumiko Azetsu-Scott; Researcher institution: Bedford Institute of Oceanography Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: umol / kg; Observation type: discrete; Measured or calculated: measured; Calculation method and parameters: Concentration (umol / kg) = concentration (umoles/litre) / density (10 C;S); Sampling instrument: CTD and rosette bottle sampler: Niskin bottle; 10 L; Analyzing instrument: In-house automated sampler with Metrohm Titrando dosimat and Tiamo software; Type of titration: Potentiometric multi point titration; Cell type (open or closed): Open; Curve fitting method: Gran point; Detailed sampling and analyzing information: Seawater samples were collected from standard depths in 500 mL borosilicate glass reagent bottles. Five mL of water was removed to allow room for thermal expansion and the sample was preserved within 30 minutes of collection with 0.1 mL of a mercuric chloride saturated solution; then sealed with Apiezon M grease and the ground glass stoppers secured in place with rubber bands. The samples were stored at room temperature until on-shore laboratory analysis. TA in the sample was determined using an open cell automated potentiometric titration with a Metrohm Titrando dosing unit controlled by Metrohm Tiamo software. The multi-point titration; using 0.1N HCl titrant containing 35 g of sodium chloride per litre of acid; was performed in a temperature controlled flask held at 25 ¬∞C with Gran endpoint determination. Measurements of a Certified reference material seawater (CRMs; Scripps Oceanographic Institution) were used for calibrating TA with each batch of 20 samples being bracketed by duplicate CRM measurements.; Replicate information: Monoplicate sample / monoplicate measurement; Standardization description: Referenced to duplicate measurement of CRM prior to each daily batch of samples; Standardization frequency: Each batch of 20 samples; CRM manufacturer: Andrew Dickson's Lab at Scripps Institute of Oceanography; CRM batch number: 139; 141; Preservation method: Mercuric chloride saturated solution; Preservative volume: 100 uL per 500 ml sample bottle = 0.02%; Preservative correction: none; TA blank correction: Averages between 10-40 umol / kg; Uncertainty: 0.0025; Quality flag convention: 1 = Sample drawn from bottle but analysis not recieved; 2 = QC Performed: Acceptable Measurement; 3 = QC Performed: Questionable Measurement; 4 = QC Performed: Bad Measurement; 5 = QC Performed: Not Reported; 6 = Mean of replicate measurements; 7 = Manual chromatographic peak measurement; 8 = Irregular digital chromatographic peak integration; 9 = Not sampled; Method reference: This is method described in SOP 3a of Dickson; A.G.; Sabine; C.L. and Christian; J.R. (Eds.) 2007. Guide to Best Practices for Ocean CO2 Measurements. PICES Special Publication 3; 191 pp; Researcher name: Kumiko Azetsu-Scott; Researcher institution: Bedford Institute of Oceanography Parameter or Variable: Partial Pressure of CO2; Abbreviation: pCO2; Unit: uatm; Observation type: discrete; Sampling instrument: Niskin bottle; 10 L; Analyzing instrument: SRI 8610C gas chromatograph with flame ionization detector and methanizer; Detailed sampling and analyzing information: Seawater samples were collected in 160 mL volume crimp seal serum bottles; allowing the bottle to overflow by 3 volumes. The sample was immediately stabilised by the addition of 50 mL of saturated mercuric chloride solution; crimp sealed with a butyl rubber septum then stored in a refrigerator. Before analysis; a 11 mL headspace of 400 ppm CO2 in zero air was introduced into the bottle which was then thermally equilibrated at 22 ¬∞C for one hour. The bottle was then shaken vigorously for 8 minutes and the headspace displaced by a brine solution; flushing the sample loop of an SRI gas chromatograph equipped with a methaniser and flame ionisation detector. CO2 peaks were calibrated by injections of primary standard gas mixtures (Air Liquide) having CO2 mixing ratios of 397.3; 797.2; 1201 and 2017 ppm.; Uncertainty: 1 uatm; Quality flag convention: 1 = Sample drawn from bottle but analysis not recieved; 2 = QC Performed: Acceptable Measurement; 3 = QC Performed: Questionable Measurement; 4 = QC Performed: Bad Measurement; 5 = QC Performed: Not Reported; 6 = Mean of replicate measurements; 7 = Manual chromatographic peak measurement; 8 = Irregular digital chromatographic peak integration; 9 = Not sampled; Method reference: Dickson; A.G.; Sabine; C.L. and Christian; J.R. (Eds.) 2007. Guide to Best Practices for Ocean CO2 Measurements. PICES Special Publication 3; 191 pp.; https://cdiac.ess-dive.lbl.gov/ftp/oceans/Handbook_2007/Guide_all_in_one.pdf; Researcher name: Kumiko Azetsu-Scott; Researcher institution: Bedford Institute of Oceanography Parameter or Variable: CTD Temperature; Abbreviation: CTDTMP; Unit: degrees celcius; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: CTD Salinity; Abbreviation: CTDSAL; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: CTD Oxygen; Abbreviation: CTDOXY; Unit: umol/kg; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: Bottle Salinity; Abbreviation: SALNTY; Observation type: Bottle, discrete; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: Bottle Oxygen; Abbreviation: OXYGEN; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: Niskin bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: Chlorofluorocarbon 12; Abbreviation: CFC-12; Unit: PMOL/KG; Observation type: Bottle, discrete; Sampling instrument: Niskin bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: Nutrients; Abbreviation: SiO3, NO3, NO2, PO4; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: Niskin bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: sulfur hexafluoride; Abbreviation: SF6; Unit: FMOL/KG; Observation type: Bottle, discrete; Sampling instrument: Niskin bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: methane; Abbreviation: CH4; Unit: NMOL/KG; Observation type: Bottle, discrete; Sampling instrument: Niskin bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian carbon dioxide (CO2) gas analyzer carbon dioxide (CO2) gas analyzer measures gaseous carbon dioxide Carbon dioxide gas analyzer has often been referred to as LI-COR, because a lot of researchers choose to use products manufactured by LI-COR incorporation for their carbon dioxide measurement. The main component of a carbon dioxide analyzer is a nondispersive infrared (NDIR) spectroscopic sensors to detect CO2 in a gaseous environment by its characteristic absorption. Carbon dioxide (CO2) gas analyzer works together with carbon dioxide (CO2) equilibrator (insttypes_id 184) to measure carbon dioxide in the water. To measure water carbon dioxide, water needs to be continuously supplied to a showerhead inside an equilibrator. As the water flows through the equilibrator chamber, dissolved carbon dioxide exchanges quickly with air in the headspace. This air is then sampled by the carbon dioxide analyzer to determine the mole fraction of CO2 in water. CTD CTD Conductivity-Temperature-Depth probe Niskin bottle Niskin bottle Device for obtaining samples of seawater at a specific depth Why special entry for Niskin bottle but no entry for Nansen bottle? nutrient autoanalyzer nutrient autoanalyzer Laboratory Instrument Nutrient Autoanalyzer is a generic term describing an automated flow-thru system used to conduct analyses of several different nutrients (nitrate, ammonium, orthophosphate, and silicate) simultaneously from a seawater sample. For example: SEAL AutoAnalyzer 3 HR Continuous Segmented Flow Analyzer oxygen sensor oxygen sensor Any instrument that measures oxygen content in a compound. spectrophotometer spectrophotometer spectrophotometer, optical spectrometer, spectrograph or spectroscope An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. Butler, L. R. P.; Laqua, K. (1995). "Nomenclature, symbols, units and their usage in spectrochemical analysis-IX. Instrumentation for the spectral dispersion and isolation of optical radiation (IUPAC Recommendations 1995)". Pure Appl. Chem. IUPAC. 67 (10): 1725–1744. doi:10.1351/pac199567101725. A spectrometer is the general term for describing a combination of spectral apparatus with one or more detectors to measure the intensity of one or more spectral bands." temperature sensor temperature sensor A sensor used to measure temperature. titrator titrator titrator CCGS Louis S. St-Laurent Updated information from ICES for the vessel LOUIS S. ST-LAURENT from CANADA. NOTE: Use 18SN for all data from CANADA platform CCGS LOUIS S. ST-LAURENT. Do not use 32SL for any data from non-existent UNITED STATES platform LOUIS S. ST.LAURENT. Some data were incorrectly encoded with platform code 32SL. Name : LOUIS S. ST-LAURENT Flag : CANADA - CA (ISO Country Code) Call Sign : CGBN Title : CCGS Platform Class : 30 Ship IMO : 6705937 Commissioned Date : 1969 Current Length : 119.6 Built : 1969 Notes : Canadian coastguard heavy icebreaker (Arctic class 4). Additional Information Sources: - http://www.ccg-gcc.gc.ca/Fleet/Vessel?vessel_id=81 - http://www.marinetraffic.com/ais/dk/shipdetails.aspx?MMSI=316165000&language=_GR - http://www.shipspotting.com/gallery/search.php?search_imo=6705937&page_limit=12&viewtype=1 - http://en.wikipedia.org/wiki/CCGS_Louis_S._St-Laurent - http://www.ccg-gcc.gc.ca/folios/00790/images/dfo-photo-622-multimedia-eng.jpg - www.ccg-gcc.gc.ca/folios/00019/docs/Louis-StLaurent-eng.pdf General Comments: Launch date 1966 Dec. 03 according to Miramar Official spelling corrected to LOUIS S. ST-LAURENT Confirmed on Miramar ship index