gov.noaa.nodc:0240322 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 2026-03-26T08:02:40Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity and other parameters collected from profile discrete observations using CTD, Niskin Bottles and other instruments during the R/V Pelican cruise RAPID 3 (EXPOCODE 32PE20180319), in the Gulf of Mexico from 2018-03-19 to 2018-03-23 (NCEI Accession 0240322) 2021-08-21 publication 2021-08-17 creation International DOI Foundation (IDF) 10.25921/67rd-0e29 NOAA National Centers for Environmental Information gov.noaa.nodc:0240322 NCEI Archive Management System 0240322 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 Kevin F. Sullivan Rosenstiel School of Marine, Atmospheric, and Earth Science Cooperative Institute for Marine and Atmospheric Studies (CIMAS) Kevin.Sullivan@noaa.gov https://cimas.earth.miami.edu/ HTTPS Rosenstiel School of Marine, Atmospheric, and Earth Science Cooperative Institute for Marine and Atmospheric Studies (CIMAS) website Institution web page information resourceProvider NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information resourceProvider Rik Wanninkhof NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) Rik.Wanninkhof@noaa.gov https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information principalInvestigator Leticia Barbero Rosenstiel School of Marine, Atmospheric, and Earth Science Cooperative Institute for Marine and Atmospheric Studies (CIMAS) Leticia.Barbero@noaa.gov https://cimas.earth.miami.edu/ HTTPS Rosenstiel School of Marine, Atmospheric, and Earth Science Cooperative Institute for Marine and Atmospheric Studies (CIMAS) website Institution web page information principalInvestigator Wanninkhof, Rik NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information author Barbero, Leticia Rosenstiel School of Marine, Atmospheric, and Earth Science Cooperative Institute for Marine and Atmospheric Studies (CIMAS) https://cimas.earth.miami.edu/ HTTPS Rosenstiel School of Marine, Atmospheric, and Earth Science Cooperative Institute for Marine and Atmospheric Studies (CIMAS) website Institution web page information author NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information contributor tableDigital This dataset contains profile discrete measurements of dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity and other parameters collected from profile discrete observations using CTD, Niskin Bottles and other instruments during the R/V Pelican cruise RAPID 3 (EXPOCODE 32PE20180319), in the Gulf of Mexico from 2018-03-19 to 2018-03-23. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry. Through the SOOP program we measure air and ocean surface pCO2 and take discrete samples of other carbon parameters. This effort is in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP) and the Climate Program Office. To measure key carbon, physical and biogeochemical parameters in surface waters and monitor changes over time. Funding Information: NOAA Climate Program Office; NOAA's Ocean Acidification Program (Quantifying sea-air CO2 fluxes using surface water pCO2 measurements from ships of opportunity, Ocean acidification Ship 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:0240322 Preview graphic PNG 0240322 NCEI ACCESSION NUMBER 2021-07-26 publication DISSOLVED INORGANIC CARBON (DIC) pH SALINITY total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS carbon dioxide (CO2) gas analyzer CTD Niskin bottle pH sensor titrator instrument NODC INSTRUMENT TYPES THESAURUS discrete sample profile theme NODC OBSERVATION TYPES THESAURUS R/V Pelican platform NODC PLATFORM NAMES THESAURUS NOAA Atlantic Oceanographic and Meteorological Laboratory dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA Atlantic Oceanographic and Meteorological Laboratory dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP) project NODC PROJECT NAMES THESAURUS Gulf of Mexico place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce 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 RAPID 3 project Cruise ID 32PE20180319 project EXPOCODE Ocean Acidification Program (OAP) Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords Gulf of Mexico project Reference Section ID EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH 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 CTDSAL_PSS78 DIC SST_C TA pH_TS_20C; pH_TS_25C theme Provider Variable Abbreviations CO2 ANALYZERS > CO2 ANALYZERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES PH METERS > PH METERS 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 PELICAN (call sign: WSK3051, ICES code: 32PE, 1985-) platform ICES/SeaDataNet Ship Codes OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO 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 Gulf of Mexico place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Wanninkhof, Rik; Barbero, Leticia (2021). Dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity and other parameters collected from profile discrete observations using CTD, Niskin Bottles and other instruments during the R/V Pelican cruise RAPID 3 (EXPOCODE 32PE20180319), in the Gulf of Mexico from 2018-03-19 to 2018-03-23 (NCEI Accession 0240322). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/67rd-0e29. 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. Global Coastal Program Data: North America East Coast 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/north_america_east.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/north_america_east.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 -95.016 -94.4 27.318 29.209 2018-03-19 2018-03-23 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 0.396 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0240322.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.25921/67rd-0e29 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/240322 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/240322 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0185/0240322/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). 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You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0240322 v1.1 was published. 2021-08-21T04:40:45Z NCEI Accession 0240322 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0240322/1.1 HTTPS NCEI Accession 0240322 v1.1 published 2021-08-21T04:40:45Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: DIC; Unit: micro-mol/kg; Observation type: Discrete profile measurement; In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: CTD, Niskin Bottles; Analyzing instrument: Coulometer used: AOML5 (SOMMA #5); Detailed sampling and analyzing information: Analysis date: 08/09/2018 Coulometer used: DICE-CM5011- AOML 5 Blanks: 12.0 counts/min CRM # 0355 was used and with an assigned value of (includes both DIC and salinity): Batch 173, c: 2042.41 μmol/kg, S: 33.414 CRM values measured: AOML 5: offset 0.71 μmol/kg (2043.12 μmol/kg). Average run time, minimum run time, maximum run time: 8, 7 and 9 min. Analysis date: 08/09/2018 Coulometer used: DICE-CM5011- AOML 6 Blanks: 12.0 raised to15.0 counts/min CRM # 416 was used and with an assigned value of (includes both DIC and salinity): Batch 173, c: 2042.41 μmol/kg, S: 33.414 CRM values measured: AOML 6: offset 4.28 μmol/kg (2046.69 μmol/kg). Average run time, minimum run time, maximum run time: 8, 8 and 9 min. Reproducibility: (# samples and average difference): No duplicate samples were collected. CRM, salinity and HgCl2 correction applied: Salinity correction was applied using TSG salinity. Remarks The volume correction was applied due to added HgCl2 (Measured DIC*1.00037). The first CRM of each cell was used for a CRM correction. The DIC instruments were stable: the gas loop and CRM values did not change significantly throughout the life span of each cell. The blank on AOML 6 (08/09/2018) was raised from 12.0 to 15.0 before running the 2nd gas calibration.; CRM manufacturer: Dr. A. Dickson of UCSD; CRM batch number: Batch 173; Preservation method: saturated HgCl2; Preservative volume: 0.2 ml; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value, 5 = value not reported, 6 = mean of replicate measurements, 9 = sample not drawn.; Researcher name: Rik Wanninkhof, Leticia Barbero; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA) Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: micro-mol/kg; Observation type: Discrete and profile measurement; In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: CTD, Niskin Bottles; Type of titration: Full Titration; Cell type (open or closed): Open; Curve fitting method: Least-Square Analysis; Detailed sampling and analyzing information: Analysis date: 08/17/2018 Titration system used: Open cell CRM #41 Batch 153, Salinity = 33.357, cert. TA = 2225.59μmol/kg. CRM #739 Batch 150, Salinity = 33.343, cert. TA = 2214.71μmol/kg On 08/17/2018 CRM #41, Batch 153 was analyzed before the samples and CRM #739, Batch 150 was run at the end of analysis on system 1. The TA for the water samples was corrected using the daily averaged ratios between the certified and measured values of the CRMs run on system 1 cell. The following table shows the CRM measurements for each day and cell.; CRM manufacturer: Dr. A. Dickson of UCSD; CRM batch number: Batch 153; Preservation method: saturated HgCl2; Preservative volume: 0.2 ml; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value, 5 = value not reported, 6 = mean of replicate measurements, 9 = sample not drawn.; Method reference: Millero, F. J., Zhang, J. Z., Lee, K., and Campbell, D. M. (1993). Titration alkalinity of seawater. Marine Chemistry, 44(2), 153-165.; Researcher name: Rik Wanninkhof, Leticia Barbero; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA) Parameter or Variable: pH on Total Scale; Abbreviation: pH_TS_20C; pH_TS_25C; Observation type: CTD, Niskin Bottle; Measured or calculated: Measured; Detailed sampling and analyzing information: Analysis date: 08/09/2018 A CRM was analyzed before sample analysis. CRM #478, Batch 173 pH = 7.8767 Spectrophotometer used: HP Agilent 8453. The equations of Liu et al, 2011 formulated using the purified m-cresol purple indicator was used to determine pH of the samples. pH samples were analyzed at 200C at Full Scale (pH 0-14). The pH results are reported at 250C. Temperature for each sample was measured before analysis using a Hart Scientific Fluke 1523 reference thermometer. Approximately 80 mL of sample was extracted from each DIC sample bottle by automated syringe before DIC analysis to determine the pH.; Researcher name: Rik Wanninkhof; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA) Parameter or Variable: Water temperature; Abbreviation: SST_C; Unit: degrees celsius (ITS-90); Observation type: CTD; In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: SBE 38; Uncertainty: plus or minus 0.001 degrees celsius; Researcher name: Rik Wanninkhof; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA) Parameter or Variable: Salinity; Abbreviation: CTDSAL_PSS78; Unit: practical salinity scale of 1978; Observation type: CTD; In-situ / Manipulation / Response variable: in-situ observation; Sampling instrument: SBE 45; Uncertainty: plus or minus 0.005; Researcher name: Rik Wanninkhof; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA) 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? 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. titrator titrator titrator R/V Pelican Flag: United States Title: R/V Vessel Type: Research Survey IMO: 8517009 DOB: 198505 Institution: LUMCON/UNOLS