gov.noaa.nodc:0291292 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 2026-05-01T23:16:07Z 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, pCO2, methane, dissolved oxygen, nutrients, temperature, salinity, and other measurements collected from discrete samples and profile observations during the R/V Neil Armstrong Davis Strait Observing System (DSOS) cruise "AR69-04" (EXPOCODE 33VB20221001) in Davis Strait, Baffin Bay, northern Labrador Sea, North Pacific Ocean from 2022-10-01 to 2022-10-22 (NCEI Accession 0291292) 2024-04-25 publication 2026-05-01 revision 2024-04-19 creation International DOI Foundation (IDF) 10.25921/8yrb-1y98 NOAA National Centers for Environmental Information gov.noaa.nodc:0291292 NCEI Archive Management System 0291292 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 Emily O'Grady Bedford Institute of Oceanography (BIO) emily.ogrady@dfo-mpo.gc.ca resourceProvider Bedford Institute of Oceanography (BIO) resourceProvider Kumiko Azetsu-Scott Bedford Institute of Oceanography (BIO) Kumiko.Azetsu-Scott@dfo-mpo.gc.ca principalInvestigator Craig M. Lee UW School of Oceanography craiglee@uw.edu http://www.ocean.washington.edu HTTP UW School of Oceanography website Institution web page information principalInvestigator Azetsu-Scott, Kumiko Bedford Institute of Oceanography (BIO) author Lee, Craig M. UW School of Oceanography craiglee@uw.edu http://www.ocean.washington.edu HTTP UW School of Oceanography website Institution web page information author Bedford Institute of Oceanography (BIO) contributor University of Washington (UW) contributor tableDigital Oceanographic sampling of physical, chemical, and biological parameters was conducted along selected fixed sections in Davis Strait, Baffin Bay, northern Labrador Sea, North Atlantic Ocean at full water depths during the R/V Neil Armstrong Davis Strait Observing System (DSOS) cruise "AR69-04" (EXPOCODE 33VB20221001) from 2022-10-01 to 2022-10-22. The cruise is part of DSOS's long-term, high-frequency repeat program. CTD casts were performed at all stations, and discrete water samples were collected in Niskin bottles using the CTD/Rosette system. The cruise was designed to investigate Arctic-North Atlantic interactions, including the variability and trend of freshwater, heat, carbon, oxygen, and nutrient fluxes, as well as ecosystem responses to climate change. This effort was conducted in support of the NSF (OPP1902595) and Fisheries and Oceans, Canada (OFSI). The Davis Strait Observing System (DSOS) collects and analyzes data in the gateway between the Arctic and the North Atlantic, spanning Eastern Canada and Greenland. Physical, chemical, and biological oceanographic observations aid in investigating the variability and trends of high-latitude oceans. This includes monitoring changes in freshwater, heat, and carbon content, tracking the progression of ocean acidification, and studying biological responses to environmental change through repeated observations. Funding Information: Government of Canada: Fisheries and Oceans Canada (The Davis Strait Observing System (DSOS), DFO-OFSI (65200200)) Funding Information: NSF (Collaborative Research: The Arctic Observing Network - Capturing and Understanding Arctic Change with Renewed Observations at the Davis Strait Gateway, OPP1902595) 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 0291292 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:0291292 Preview graphic PNG 0291292 NCEI ACCESSION NUMBER 2026-03-16 publication AMMONIUM (NH4) Delta Oxygen-18 DISSOLVED INORGANIC CARBON (DIC) DISSOLVED OXYGEN HYDROSTATIC PRESSURE Methane (CH4) NITRATE NITRITE 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 pH sensor temperature sensor thermosalinograph titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample physical profile theme NODC OBSERVATION TYPES THESAURUS RV Neil Armstrong platform NODC PLATFORM NAMES THESAURUS Bedford Institute of Oceanography University of Washington dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS Bedford Institute of Oceanography dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Ocean Carbon and Acidification Data System (OCADS) project NODC PROJECT NAMES THESAURUS Baffin Bay Davis Strait Labrador Sea North Atlantic Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication 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 ar69-04 project Cruise ID 33VB20221001 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords Canadian Archipelago project Reference Section ID The Davis Strait Observing System (DSOS) project Research Projects EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA 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 PRESSURE > WATER PRESSURE 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 Profile theme OCADS Study Type ALKALI CH4 CTDOXY CTDPH CTDPRS CTDSAL CTDTMP DELO18 NH3 NITRIT NO2+NO3 OXYGEN PCO2 PHSPHT PH_TOT SALNTY SILCAT TCARBN theme Provider Variable Abbreviations AUTOANALYZER > AUTOANALYZER CO2 ANALYZERS > CO2 ANALYZERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES PH METERS > PH METERS TEMPERATURE SENSORS > TEMPERATURE SENSORS THERMOSALINOGRAPHS 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 NEIL ARMSTRONG (call sign: WARL, ICES code: 33VB, 2015-) platform ICES/SeaDataNet Ship Codes OCEAN > ARCTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > DAVIS STRAIT 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 Baffin Bay Davis Strait Labrador Sea North Pacific Ocean place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Azetsu-Scott, Kumiko; Lee, Craig M. (2024). Dissolved inorganic carbon (DIC), total alkalinity (TA), pH, pCO2, methane, dissolved oxygen, nutrients, temperature, salinity, and other measurements collected from discrete samples and profile observations during the R/V Neil Armstrong Davis Strait Observing System (DSOS) cruise "AR69-04" (EXPOCODE 33VB20221001) in Davis Strait, Baffin Bay, northern Labrador Sea, North Pacific Ocean from 2022-10-01 to 2022-10-22 (NCEI Accession 0291292). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/8yrb-1y98. 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. license This dataset is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) License. SPDX License: Creative Commons Attribution 4.0 International (CC-BY-4.0) 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 Canadian Archipelago Cruises 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_Canada_Arch.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_Canada_Arch.html Related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital crossReference project eng; USA utf8 environment oceans -65.94 -50.31 61.97 72.75 2022-10-01 2022-10-22 This data package (Submission ID: BHFKC8CJJ) was acquired by NCEI from the Scientific Data Integration System (SDIS) at the NOAA Pacific Marine Environmental Laboratory (PMEL) in accordance with the archival submission agreement between NCEI and PMEL. 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 0.568 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0291292.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.25921/8yrb-1y98 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/291292 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/291292 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0226/0291292/ 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 0291292 v1.1 was published. 2024-04-25T00:54:24Z NCEI Accession 0291292 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0291292/1.1 HTTPS NCEI Accession 0291292 v1.1 published 2024-04-25T00:54:24Z download NCEI Accession 0291292 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. 2024-04-27T07:03:04Z NCEI Accession 0291292 v2.2 publication https://www.ncei.noaa.gov/archive/accession/0291292/2.2 HTTPS NCEI Accession 0291292 v2.2 published 2024-04-27T07:03:04Z download NCEI Accession 0291292 was revised and v3.3 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. 2026-05-01T17:03:42Z NCEI Accession 0291292 v3.3 publication https://www.ncei.noaa.gov/archive/accession/0291292/3.3 HTTPS NCEI Accession 0291292 v3.3 published 2026-05-01T17:03:42Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: UMOL/KG; Observation type: Profile; Measured or calculated: MEASURED; Sampling instrument: Niskin Bottle; 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.; Standardization description: Referenced to duplicate measurement of CRM prior to, and following, each daily batch of DIC samples; Standardization frequency: To bracket each batch of 20 samples; CRM manufacturer: Andrew Dickson, Scripps Oceanographic Institute; CRM batch number: 202; Preservation method: Mercuric chloride saturated solution; Preservative volume: 100 uL per 500 ml sample bottle = 0.02%; Preservative correction: None; Uncertainty: 1.5E-3; 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: Profile; Measured or calculated: MEASURED; Sampling instrument: Niskin Bottle; 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.; Standardization description: Referenced to duplicate measurements of a CRM before and after each daily batch of samples; Standardization frequency: To bracket each batch of 20 samples; CRM manufacturer: Andrew Dickson, Scripps Oceanographic Institute; CRM batch number: 202; Preservation method: Mercuric chloride saturated solution; Preservative volume: 100 uL per 500 ml sample bottle = 0.02%; Preservative correction: None; Uncertainty: 2.5000000000000001E-3; 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: pH; Abbreviation: PH_TOT; pH scale: TOTALSCALE(T); Observation type: Profile; Measured or calculated: MEASURED; Sampling instrument: Pulled from GEAR_TYPE_SEQ; Analyzing instrument: Agilent 8454 spectrophotometer with 10 cm pathlength cell with Apollo Instruments autosampler; Detailed sampling and analyzing information: Seawater samples were collected from the rosette in screw cap 200 mL borosilicate glass bottles which were then refrigerated for up to 2 hours prior to analysis. Just prior to measurement, the bottles were equilibrated to 25 degrees C in a water bath then transferred into temperature controlled 10 cm quartz cell in an Agilent 8454 spectrophotometer. Following a blank measurement, 25 mL of a 3 milli-molar solution of purified m-cresol purple was added to the sample using the Apollo autosampler to mix the dye solution. Absorbances were measured at 434, 578 and 730 nm and pH determined according to the method described in SOP 6b of Guide to Best Practices for Ocean CO2 measurements (Dickson et al., 2007). The equation of Liu et al. (2011) was used to calculate pH values and a double dye correction was applied.; Standardization description: Referenced to duplicate measurements of a CRM before and after each daily batch of samples; Standardization frequency: Each 40 samples; pH standard values: 202; Temperature of standardization: 25 degrees Cecius; Temperature correction method: None; At what temperature was pH reported: 25 degrees Cecius; Uncertainty: 1E-3; 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: pCO2 (fCO2) discrete; Abbreviation: PCO2; Unit: UATM; Observation type: Profile; Measured or calculated: MEASURED; Analyzing instrument: SRI 8610C gas chromatograph with flame ionization detector and methanizer; Storage method: Vials stored in refrigerator; Seawater volume: 150 mL; Headspace volume: 5 mL; Temperature of measurement: 22 degrees Celcius; 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.; Gas detector manufacturer: SRI instruments; Gas detector model: 8610 GC-FID with methanizer; Gas detector resolution: 0.1 uatm; Gas detector uncertainty: 1 uatm; Water vapor correction method: Dickson et al., 2007, Guide to best practices for ocean CO2 measurements, Sop 4, section 8.3; Temperature correction method: None; At what temperature was pCO2 reported: 22 degrees Celcius; Uncertainty: 2.5000000000000001E-3; 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: oxygen (sensor); Abbreviation: CTDOXY; Unit: ML/L; Observation type: profile; Sampling instrument: CTD; Quality flag convention: "" = No QC Performed;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 Parameter or Variable: pressure (sensor); Abbreviation: CTDPRS; Unit: DBAR; Observation type: profile; Sampling instrument: CTD; Quality flag convention: "" = No QC Performed;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 Parameter or Variable: salinity (sensor); Abbreviation: CTDSAL; Unit: PSS-78; Observation type: profile; Sampling instrument: CTD; Quality flag convention: "" = No QC Performed;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 Parameter or Variable: ph (sensor); Abbreviation: CTDPH; Unit: NA; Observation type: profile; Sampling instrument: CTD; Quality flag convention: "" = No QC Performed;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 Parameter or Variable: temperature (sensor); Abbreviation: CTDTMP; Unit: DEG C; Observation type: profile; Sampling instrument: CTD; Quality flag convention: "" = No QC Performed;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 Parameter or Variable: ammonium; Abbreviation: NH3; Unit: UMOL/KG; Observation type: profile; Sampling instrument: Niskin Bottle; 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 Parameter or Variable: methane; Abbreviation: CH4; Unit: NMOL/KG; Observation type: profile; Sampling instrument: Niskin Bottle; 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 Parameter or Variable: oxygen; Abbreviation: OXYGEN; Unit: ML/L; Observation type: profile; Sampling instrument: Niskin Bottle; 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 Parameter or Variable: nitrate; Abbreviation: NO2+NO3; Unit: UMOL/KG; Observation type: profile; Sampling instrument: Niskin Bottle; 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 Parameter or Variable: nitrite; Abbreviation: NITRIT; Unit: UMOL/KG; Observation type: profile; Sampling instrument: Niskin Bottle; 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 Parameter or Variable: phosphate; Abbreviation: PHSPHT; Unit: umol/kg; Observation type: profile; Sampling instrument: Niskin bottle; 10 L; 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 Parameter or Variable: salinity; Abbreviation: SALNTY; Unit: PSS-78; Observation type: profile; Sampling instrument: Niskin Bottle; 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 Parameter or Variable: silicate; Abbreviation: SILCAT; Unit: UMOL/KG; Observation type: profile; Sampling instrument: Niskin Bottle; 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 Parameter or Variable: d18O; Abbreviation: DELO18; Unit: /MILLE; Observation type: profile; Sampling instrument: Niskin Bottle; 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 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 pH sensor pH sensor generic meter used to measure pH Any of a class of instruments used to quantify pH in a water or other type of sample. temperature sensor temperature sensor A sensor used to measure temperature. thermosalinograph thermosalinograph automated sea surface temperature and salinity instrument, usually attached to the hull of a ship Thermosalinograph is an automated Sea Surface Temperature and Salinity measurement system making measurement on board a ship using a water intake. [https://www.aoml.noaa.gov/phod/tsg/about.php 2021-01-29] titrator titrator titrator RV Neil Armstrong Updated information from ICES for the vessel NEIL ARMSTRONG from US: UNITED STATES. Name : NEIL ARMSTRONG Country(s) : US: UNITED STATES (ISO Country Code) Platform Class : 31: Research vessel Call Sign : WARL MMSI: 338767000 IMO : 9688946 Pennant : AGOR 27 Title : RV Commissioned Date : 2015-09-23 Current Length : 72.5 Built : 2015 Notes : Owned by the US Navy, operated by Woods Hole Oceanographic Institution. Information Sources: - https://www.fleetmon.com/vessels/r-v-neil-armstrong_9688946_9376928/ - http://www.shipspotting.com/gallery/photo.php?lid=1857202 - https://en.wikipedia.org/wiki/RV_Neil_Armstrong_(AGOR-27) Confirmed by NOAA on 2018-10-11 (FY2019).