gov.noaa.nodc:0253455 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 2026-07-28T13:36:13Z 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 other parameters from Autonomous Surface Vehicle (ASV) Saildrone 1007 (EXPOCODE 09DB20180327) in the South Pacific Ocean, Tasman Sea from 2018-03-27 to 2018-05-31 (NCEI Accession 0253455) 2022-05-11 publication 2022-05-10 creation International DOI Foundation (IDF) 10.25921/q5ts-rc10 NOAA National Centers for Environmental Information gov.noaa.nodc:0253455 NCEI Archive Management System 0253455 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 Bronte Tilbrook Commonwealth Scientific and Industrial Research Organization (CSIRO) resourceProvider Commonwealth Scientific and Industrial Research Organization (CSIRO) resourceProvider Bronte Tilbrook Commonwealth Scientific and Industrial Research Organization (CSIRO) Bronte.Tilbrook@csiro.au principalInvestigator Abe Passmore Commonwealth Scientific and Industrial Research Organization (CSIRO) Bronte.Tilbrook@csiro.au principalInvestigator Erik van Ooijen Commonwealth Scientific and Industrial Research Organization (CSIRO) Bronte.Tilbrook@csiro.au principalInvestigator Tilbrook, Bronte Commonwealth Scientific and Industrial Research Organization author Passmore, Abe Commonwealth Scientific and Industrial Research Organization author van Ooijen, Erik Commonwealth Scientific and Industrial Research Organization author Commonwealth Scientific and Industrial Research Organization (CSIRO) contributor tableDigital This dataset includes surface underway chemical, meteorological and physical data collected from Autonomous Surface Vehicle (ASV) Saildrone 1007 (EXPOCODE 09DB20180327) in the South Pacific Ocean, Tasman Sea from 2018-03-27 to 2018-05-31. These data include XCO2_DRY_SW [μmol/mol]- Mole fraction of CO2 in the equilibrator head space; XCO2_DRY_AIR [μmol/mol] - Mole fraction of CO2 in the atmosphere; fCO2_WET_SW [μatm] - Fugacity of carbon dioxide at surface water, corrected for water vapor at surface water salinity and temperature; DfCO2 [μatm] - Delta fCO2 = (fCO2_WET_SW - fCO2_WET_AIR); Atmospheric pressure; Equilibrator pressure; Sea surface temperature; Equilibrator Temperature; Sea Surface Salinity; Concentration O2 in surface sea water; Total pH surface water. The instruments used to collect these data include bubble type equilibrator for autonomous carbon dioxide (CO2) measurement, carbon dioxide (CO2) gas analyzer, humidity sensor, oxygen meter and thermosalinographs. This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Information: CSIRO Oceans and Atmosphere, Australia (Autonomous Surface Vehicle, Saildrone) 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:0253455 Preview graphic PNG 0253455 NCEI ACCESSION NUMBER 2022-04-23 publication DISSOLVED OXYGEN Partial pressure (or fugacity) of carbon dioxide - atmosphere partial pressure of carbon dioxide - water pH SALINITY - SURFACE WATER SEA SURFACE TEMPERATURE xCO2 atmosphere xCO2 seawater theme NODC DATA TYPES THESAURUS bubble type equilibrator for autonomous carbon dioxide (CO2) measurement carbon dioxide (CO2) gas analyzer oxygen sensor pH sensor salinometer temperature sensor instrument NODC INSTRUMENT TYPES THESAURUS chemical meteorological physical surface underway theme NODC OBSERVATION TYPES THESAURUS Commonwealth Scientific and Industrial Research Organization dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS Commonwealth Scientific and Industrial Research Organization dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS GULF OF MEXICO NOAA/NMFS SHIP OF OPPORTUNITY (SOOP) Surface Ocean CO2 Atlas (SOCAT) project NODC PROJECT NAMES THESAURUS South Pacific Ocean Tasman Sea place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication SD1007_09DB20180327 project Cruise ID 09DB20180327 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE > PARTIAL PRESSURE OF CARBON DIOXIDE EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 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 Continuous measurement Surface underway theme OCADS Study Type Saildrone theme Provider Keywords ATMOSPHERIC PRESSURE DISSOLVED_OXYGEN DfCO2 EQUILIBRATOR PRESSURE EQUILIBRATOR TEMPERATURE PH SALINITY SEA SURFACE TEMPERATURE XCO2_DRY_AIR XCO2_DRY_SW fCO2_WET_SW theme Provider Variable Abbreviations CO2 ANALYZERS > CO2 ANALYZERS EQUILIBRATORS OXYGEN METERS > OXYGEN METERS PH METERS > PH METERS SALINOMETERS TEMPERATURE SENSORS > TEMPERATURE SENSORS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 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 Saildrone platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 24 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 Saildrone platform Platform Keywords autonomous surface water vehicle platform SeaVoX Platform Categories OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 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 South Pacific Ocean Tasman Sea place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Tilbrook, Bronte; Passmore, Abe; van Ooijen, Erik (2022). Surface underway measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature, sea surface salinity and other parameters from Autonomous Surface Vehicle (ASV) Saildrone 1007 (EXPOCODE 09DB20180327) in the South Pacific Ocean, Tasman Sea from 2018-03-27 to 2018-05-31 (NCEI Accession 0253455). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/q5ts-rc10. 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. Sutton, A. J., Sabine, C. L., Maenner-Jones, S., Lawrence-Slavas, N., Meinig, C., Feely, R. A., Mathis, J. T., Musielewicz, S., Bott, R., McLain, P. D., Fought, H. J., & Kozyr, A. (2014). A high-frequency atmospheric and seawater pCO2 data set from 14 open-ocean sites using a moored autonomous system. Earth System Science Data, 6(2), 353–366. https://doi.org/10.5194/essd-6-353-2014 2014-11-06 publication International DOI Foundation (IDF) https://doi.org/10.5194/essd-6-353-2014 https://doi.org/10.5194/essd-6-353-2014 HTTPS https://doi.org/10.5194/essd-6-353-2014 related journal article information Sutton, A. J. Pacific Marine Environmental Laboratory author Sabine, C. L. author Maenner-Jones, S. author Lawrence-Slavas, N. author Meinig, C. author Feely, R. A. author Mathis, J. T. author Musielewicz, S. author Bott, R. author McLain, P. D. author Fought, H. J. author Kozyr, A. author Copernicus GmbH publisher documentDigital Earth Syst. Sci. Data 6(2) ISSN 1866-3516, pp. 353-366 crossReference project Autonomous Surface Vehicle (ASV) Data 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/ASV/ HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/ASV/ 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 147.34 154.18 -43.329 -31.403 2018-03-27 2018-05-31 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. CSV 1.496 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0253455.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/q5ts-rc10 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/253455 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/253455 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0201/0253455/ 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 0253455 v1.1 was published. 2022-05-11T20:15:36Z NCEI Accession 0253455 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0253455/1.1 HTTPS NCEI Accession 0253455 v1.1 published 2022-05-11T20:15:36Z download dataset Parameter or Variable: Mole fraction of CO2 in the equilibrator head space; Abbreviation: XCO2_DRY_SW; Unit: [μmol/mol]; Controlled vocabulary name: partial pressure of carbon dioxide - water; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation; Detailed sampling and analyzing information: Measurements are made with a NOAA PMEL pCO2 monitoring system (ASVCO2), a Seabird Prawler CTD, mounted on the keel of the saildrone, similar to the system described in Sutton et al. (2014), with an Aanderaa optode used to measure dissolved oxygen concentrations. The seawater sensor intakes for the ASVpCO2, SBE16Plus V2 and the optode are mounted on the keel at about 1m water depth. The CO2 measurement uses a bubble equilibrator (Sutton et al., 2014), where the air from the equilibrator headspace is circulated through a LI-COR 820 non-dispersive infrared detector (NDIR) for measurement of CO2. The system carries out an automated measurement sequence every 0.5 or 2 hours, depending on the instrumentation setup. At the beginning of each measurement sequence, the NDIR undergoes a two point calibration with a zero CO2 gas and a high CO2 standard span gas (typically 400-550 micromol/mol), which bracket the range of CO2 mole fractions in seawater and air. The zero CO2 gas is generated by cycling air through a soda lime chamber and silica gel to remove CO2 and water vapour, respectively. The CO2 span gas is prepared by the NOAA Earth Systems Research Laboratory in the USA and calibrated on the WMO X2007 scale with a standard deviation of 0.06 micromol/mol (http://www.esrl.noaa.gov/gmd/ccl/airstandard.html). Each measurement cycle of zero and span gas, equilibrator headspace, and air takes 20 minutes with the equilibrator headspace measurement occurring at about 17 minutes followed by the air measurement. The pressure measurements are considered the same for the equilibrator headspace gas and air measurements due to the design of the MapCO2 system (Sutton et al., 2014) as are the temperature and salinity of the surface seawater and the equilibrator measured by the Seabird Prawler.; Method reference: Sutton, A.J., Sabine, C.L., Maenner-Jones, S., Lawrence-Slavas, N., Meinig, C., Feely, R.A., Mathis, J.T., Musielewicz, S., Bott, R., McLain, P.D., Fought, J., Kozyr, A., 2014. A high-frequency atmospheric and seawater pCO2 data set from 14 open ocean sites using a moored autonomous system. Earth Sys. Sci. Data, 6, https://doi.org/10.5194/essd-6-353-2014, 353-366. Parameter or Variable: Mole fraction of CO2 in the atmosphere; Abbreviation: XCO2_DRY_AIR; Unit: [mmol/mol]; Observation type: underway; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: Fugacity of carbon dioxide at surface water, corrected for water vapour at surface water salinity and temperature; Abbreviation: fCO2_WET_SW; Unit: μatm; Controlled vocabulary name: Partial pressure (or fugacity) of carbon dioxide - atmosphere; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: Delta fCO2 = (fCO2_WET_SW - fCO2_WET_AIR); Abbreviation: DfCO2; Unit: μatm; Observation type: surface underway Parameter or Variable: Atmospheric pressure; Abbreviation: ATMOSPHERIC PRESSURE; Unit: kPa; Controlled vocabulary name: Barometric Pressure; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: Equilibrator pressure; Abbreviation: EQUILIBRATOR PRESSURE; Unit: kPa; Controlled vocabulary name: Equilibrator pressure; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: Sea surface temperature; Abbreviation: SEA SURFACE TEMPERATURE; Unit: [Deg. C]; Controlled vocabulary name: Sea surface temperature; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: Sea surface salinity; Abbreviation: SALINITY; Controlled vocabulary name: SALINITY; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: Equilibrator temperature; Abbreviation: EQUILIBRATOR TEMPERATURE; Unit: degC; Controlled vocabulary name: Equilibrator temperature; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: Concentration O2 in surface sea water; Abbreviation: DISSOLVED_OXYGEN; Unit: μmol/l; Controlled vocabulary name: Oxygen; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: pH on Tostal scale; Abbreviation: PH; Controlled vocabulary name: pH; Observation type: surface underway; 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 bubble type equilibrator for autonomous carbon dioxide (CO2) measurement bubble type equilibrator for autonomous carbon dioxide (CO2) measurement This type of equilibrators are often used on buoys. Developed by Pacific Marine Environmental Laboratory and Monterey Bay Aquarium Research Institute, the h-shaped bubble equilibrator does not require a water pump to spray water from the top. see Takahashi 1961 for more information. 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. oxygen sensor oxygen sensor Any instrument that measures oxygen content in a compound. 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. salinometer salinometer generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements temperature sensor temperature sensor A sensor used to measure temperature.