gov.noaa.nodc:0246947 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 2026-03-26T08:06:33Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Surface underway measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature, sea surface salinity and barometric pressure during R/V Sikuliaq Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea, Beaufort Sea and Arctic Ocean in 2021 (NCEI Accession 0246947) 2022-02-03 publication 2022-01-31 creation International DOI Foundation (IDF) 10.25921/ptqh-cc69 NOAA National Centers for Environmental Information gov.noaa.nodc:0246947 NCEI Archive Management System 0246947 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 David R. Munro University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) david.munro@colorado.edu https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information resourceProvider University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information resourceProvider Colm Sweeney NOAA Earth System Research Laboratory (ESRL) Colm.Sweeney@noaa.gov https://www.esrl.noaa.gov/ HTTPS NOAA Earth System Research Laboratory (ESRL) website Institution web page information principalInvestigator Tim Newberger University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) Tim.Newberger@noaa.gov https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information principalInvestigator Stewart C. Sutherland Lamont-Doherty Earth Observatory (LDEO) suth@ldeo.columbia.edu http://www.ldeo.columbia.edu/ HTTP Lamont-Doherty Earth Observatory (LDEO) website Institution web page information principalInvestigator DAVID MUNRO University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) david.munro@colorado.edu https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information principalInvestigator Sweeney, Colm NOAA Earth System Research Laboratory (ESRL) https://www.esrl.noaa.gov/ HTTPS NOAA Earth System Research Laboratory (ESRL) website Institution web page information author Newberger, Tim University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) Tim.Newberger@noaa.gov https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information author Sutherland, Stewart C. Lamont-Doherty Earth Observatory (LDEO) suth@ldeo.columbia.edu http://www.ldeo.columbia.edu/ HTTP Lamont-Doherty Earth Observatory (LDEO) website Institution web page information author Munro, David R. University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information author University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) https://cires.colorado.edu/ HTTPS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences (CIRES) website Institution web page information contributor NOAA Earth System Research Laboratory (ESRL) https://www.esrl.noaa.gov/ HTTPS NOAA Earth System Research Laboratory (ESRL) website Institution web page information contributor Lamont-Doherty Earth Observatory (LDEO) http://www.ldeo.columbia.edu/ HTTP Lamont-Doherty Earth Observatory (LDEO) website Institution web page information contributor tableDigital This dataset includes surface underway data collected from R/V Sikuliaq Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea and Arctic Ocean from 2021-03-05 to 2021-11-23. These data include partial pressure carbon dioxide (pCO2) - air, partial pressure carbon dioxide (pCO2) - water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement. This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Information: NSF, NOAA (NOAA Climate Program Office Program PROJECT TITLE: Surface Water pCO2 Measurements from Ships of Opportunity (SOOP)) 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 https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0246947 Preview graphic PNG 0246947 NCEI ACCESSION NUMBER 2022-01-14 publication BAROMETRIC PRESSURE Partial pressure (or fugacity) of carbon dioxide - atmosphere partial pressure of carbon dioxide - water SALINITY - SURFACE WATER WATER TEMPERATURE theme NODC DATA TYPES THESAURUS barometric pressure sensor carbon dioxide (CO2) gas analyzer salinometer showerhead equilibrator temperature sensor instrument NODC INSTRUMENT TYPES THESAURUS chemical meteorological physical surface underway theme NODC OBSERVATION TYPES THESAURUS Sikuliaq platform NODC PLATFORM NAMES THESAURUS Lamont-Doherty Earth Observatory NOAA Earth System Research Laboratory University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS University of Colorado Boulder, Cooperative Institute for Research In Environmental Sciences dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Ship of Opportunity Programme (SOOP) Surface Ocean CO2 Atlas (SOCAT) project NODC PROJECT NAMES THESAURUS Arctic Ocean Beaufort Sea Bering Sea Chukchi Sea Gulf of Alaska North Pacific Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication COLUMBIA/LDEO > Lamont-Doherty Earth Observatory, Columbia University UCO/CIRES > Cooperative Institute for Research in Environmental Sciences, University of Colorado 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 S2101 S2102 S2103 S2104 S2105 S2106 S2107 S2108 S2109 S2110 S2111 S2112 S2113 project Cruise ID 33BI20210305 33BI20210312 33BI20210324 33BI20210330 33BI20210414 33BI20210423 33BI20210509 33BI20210520 33BI20210626 33BI20210718 33BI20210811 33BI20211008 33BI20211108 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords SOOP project Reference Section ID EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE > PARTIAL PRESSURE OF CARBON DIOXIDE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE 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 Surface underway theme OCADS Study Type R/V Sikuliaq SOOP VOS theme Provider Keywords ATM_PRE EQ_PRE EQ_TMP FCO2_WAT_SST PCO2_WAT_SST SSS SST XCO2_AIR_INT XCO2_EQ XCO2_WAT_SST XH2O theme Provider Variable Abbreviations BAROMETERS > BAROMETERS CO2 ANALYZERS > CO2 ANALYZERS EQUILIBRATORS SALINOMETERS 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 Sikuliaq (call sign: WDN7246, ICES code: 33BI, 2013-) platform ICES/SeaDataNet Ship Codes OCEAN > ARCTIC OCEAN OCEAN > ARCTIC OCEAN > BEAUFORT SEA OCEAN > ARCTIC OCEAN > CHUKCHI SEA OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA 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 Bering Sea Chukchi Sea Gulf of Alaska North Pacific Ocean place Provider Geographic Names accessLevel: Public otherRestrictions Cite as: Sweeney, Colm; Newberger, Tim; Sutherland, Stewart C.; Munro, David R. (2022). Surface underway measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature, sea surface salinity and barometric pressure during R/V Sikuliaq Expeditions in the North Pacific Ocean, Gulf of Alaska, Bering Sea, Chukchi Sea, Beaufort Sea and Arctic Ocean in 2021 (NCEI Accession 0246947). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/ptqh-cc69. 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. SOOP USCGC Healy and R/V Sikuliaq Lines 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/VOS_Program/CGC_Healy.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/VOS_Program/CGC_Healy.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 climatologyMeteorologyAtmosphere -178.6 -121.1 41.1 76.3 2021-03-05 2021-11-23 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 8.56 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0246947.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/ptqh-cc69 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/246947 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/246947 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0154/0246947/ 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 0246947 v1.1 was published. 2022-02-03T21:50:14Z NCEI Accession 0246947 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0246947/1.1 HTTPS NCEI Accession 0246947 v1.1 published 2022-02-03T21:50:14Z download dataset Parameter or Variable: XCO2_EQ; Abbreviation: XCO2_EQ; Unit: UMOL/MOL; Controlled vocabulary name: partial pressure of carbon dioxide - water; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: XH2O; Abbreviation: XH2O; Unit: UMOL/MOL; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: EQ_PRE; Abbreviation: EQ_PRE; Unit: HPA; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: EQ_TMP; Abbreviation: EQ_TMP; Unit: DEG_C; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: ATM_PRE; Abbreviation: ATM_PRE; Unit: HPA; Controlled vocabulary name: BAROMETRIC PRESSURE; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: SST; Abbreviation: SST; Unit: DEG_C; Controlled vocabulary name: SEA SURFACE TEMPERATURE; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: SSS; Abbreviation: SSS; Unit: PSS; Controlled vocabulary name: SALINITY; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: XCO2_AIR_INT; Abbreviation: XCO2_AIR_INT; Unit: UMOL/MOL; Controlled vocabulary name: Partial pressure (or fugacity) of carbon dioxide - atmosphere; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: FCO2_WAT_SST; Abbreviation: FCO2_WAT_SST; Unit: UATM; Controlled vocabulary name: partial pressure of carbon dioxide - water; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: PCO2_WAT_SST; Abbreviation: PCO2_WAT_SST; Unit: UATM; Controlled vocabulary name: partial pressure of carbon dioxide - water; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: XCO2_WAT_SST; Abbreviation: XCO2_WAT_SST; Unit: UMOL/MOL; Controlled vocabulary name: partial pressure of carbon dioxide - water; In-situ / Manipulation / Response variable: in-situ observation asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian barometric pressure sensor barometric pressure sensor instrument used to measure the atmospheric pressure. 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. salinometer salinometer generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements showerhead equilibrator showerhead equilibrator extracts dissolved CO2 from water A carbon dioxide equilibrator is usually in the shape of a vertical tube, with a showerhead on the top, some headspace, a lot of beads to increase the surface exchange area between water and air, a water seal device at the bottom to allow water to overflow, but prevents air exchange between inside and outside. Carbon dioxide (CO2) equilibrator works together with carbon dioxide (CO2) gas analyzer (insttypes_id 183) 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. temperature sensor temperature sensor A sensor used to measure temperature. Sikuliaq ---journal entry dated 2024-04-2024--- The callsign changed from WDG7520 to WDN7246. An attribute change request was submitted to ICES on 2024-03-29. ---end of 2024-04-2024 journal entry--- ICES request for the vessel Sikuliaq from UNITED STATES. Name : Sikuliaq Flag : UNITED STATES - US (ISO Country Code) Call Sign : WDG7520 Platform Class : 31 Research vessel IMO : 9578945 Commissioned Date : 2013-03-29 Current Length : 80 Built : 2011-04-11 Notes : Owner U.S. National Science Foundation, Operator University of Alaska Fairbanks,Ice-Capable Additional Information Sources: - http://www.sfos.uaf.edu/sikuliaq/ Confirmed by NOAA on 2013-07-26.