gov.noaa.nodc:0279824 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 2026-03-31T13:18:01Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Dissolved inorganic carbon, total alkalinity, water temperature and salinity from laboratory analyzed discrete water samples taken at the Central Gulf of Mexico Ocean Observing System buoy moored at 28.9N, 90.5W off Coastal Louisiana from 2017-07-14 to 2022-02-20 (NCEI Accession 0279824) 2023-07-11 publication 2023-07-05 creation International DOI Foundation (IDF) 10.25921/hk16-5q40 NOAA National Centers for Environmental Information gov.noaa.nodc:0279824 NCEI Archive Management System 0279824 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 Stephan D. Howden University of Southern Mississippi, Department of Marine Science stephan.howden@usm.edu https://www.usm.edu/marine HTTPS University of Southern Mississippi, Department of Marine Science website Institution web page information resourceProvider The University of Southern Mississippi (USM) http://www.usm.edu/ HTTP The University of Southern Mississippi (USM) website Institution web page information resourceProvider Christopher T. Hayes University of Southern Mississippi christopher.t.hayes@usm.edu principalInvestigator Stephan Howden University of Southern Mississippi, Department of Marine Science stephan.howden@usm.edu https://www.usm.edu/marine HTTPS University of Southern Mississippi, Department of Marine Science website Institution web page information collaborator Hayes, Christopher T. University of Southern Mississippi author Howden, Stephan D. University of Southern Mississippi, Department of Marine Science https://www.usm.edu/marine HTTPS University of Southern Mississippi, Department of Marine Science website Institution web page information author The University of Southern Mississippi (USM) http://www.usm.edu/ HTTP The University of Southern Mississippi (USM) website Institution web page information contributor tableDigital This dataset consists of dissolved inorganic carbon, total alkalinity, water temperature and salinity from laboratory analyzed discrete water samples taken at the Central Gulf of Mexico Ocean Observing System buoy moored at 28.9N, 90.5W off Coastal Louisiana from 2017-07-14 to 2022-02-20. These are validation samples for the NOAA Pacific Marine Environmental Laboratory (PMEL) Moored Autonomous pCO2 (MAPCO2®) system buoy CoastalLA_91W_30N, that includes SeaBird CTD and SAMI pH instruments. Validation on measurements from moored instrumentation. Funding Information: NOAA (ontinued Development of the Gulf of Mexico Coastal Ocean Observing system, NA18NOS0120018) Funding Information: NOAA (Continued Development of the Gulf of Mexico Coastal Ocean Observing System, NA21NOS0120092) 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:0279824 Preview graphic PNG 0279824 NCEI ACCESSION NUMBER 2023-07-03 publication DISSOLVED INORGANIC CARBON (DIC) SALINITY total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS bottle carbon dioxide (CO2) gas analyzer salinometer temperature sensor titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample physical profile theme NODC OBSERVATION TYPES THESAURUS R/V Acadiana platform NODC PLATFORM NAMES THESAURUS The University of Southern Mississippi dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS The University of Southern Mississippi 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 Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords CenGOOS OA project Research Projects EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER 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 Discrete measurement Profile theme OCADS Study Type DIC SST Salinity TA theme Provider Variable Abbreviations CO2 ANALYZERS > CO2 ANALYZERS 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 Ships 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 ACADIANA (call sign: WDG3928, ICES code: 33SZ, 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 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 Gulf of Mexico place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Hayes, Christopher T.; Howden, Stephan D. (2023). Dissolved inorganic carbon, total alkalinity, water temperature and salinity from laboratory analyzed discrete water samples taken at the Central Gulf of Mexico Ocean Observing System buoy moored at 28.9N, 90.5W off Coastal Louisiana from 2017-07-14 to 2022-02-20 (NCEI Accession 0279824). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/hk16-5q40. 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. Coastal Louisiana Buoy (CoastalLA_91W_30N) 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Moorings/Coastal_LA.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Moorings/Coastal_LA.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 -90.504 -90.496 28.896 28.904 2017-07-14 2022-02-20 This data package (Submission ID: BF6778NW1) 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. 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Originator data format 0.224 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0279824.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/hk16-5q40 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/279824 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/279824 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0214/0279824/ 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 0279824 v1.1 was published. 2023-07-11T10:42:36Z NCEI Accession 0279824 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0279824/1.1 HTTPS NCEI Accession 0279824 v1.1 published 2023-07-11T10:42:36Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: DIC; Unit: micro-mole/kilogram; Observation type: profile; In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: Standard Niskin; Analyzing instrument: Discrete dissolved inorganic carbon (DIC) measurement (Coulomerter); Detailed sampling and analyzing information: A glass 250 mL wide-mouth Pyrex bottle was triple rinsed with sample water and then filled smoothly and overfilled with half a sample bottle volume. Following collection, the headspace was adjusted by removing seawater so that 1% of the bottle volume was left to allow for water expansion (i.e., 2.5 mL headspace for a 250 mL bottle). The samples were amended with 50 μl of 50% saturated reagent grade HgCl2 solution, capped tight with o-ring seal, stored in a cooler for transportation and then in a refrigerator until analysis (usually within 3-5 days). Samples were analyzed for inorganic carbon using methods from Dickson et al. (2007) by acidifying 30 mL of sample with 4 mL of 2 M phosphoric acid and measuring the extracted CO2 on a UIC Coulometer. Samples were brought to 24°C using a water jacket before DIC analysis. A handheld syringe was used to extract water from the sample bottle with tygon tubing, the sample was accurately weighed for mass and then injected with a metal needle through a rubber septa into the UIC acidification unit linked to the Coulometer. In-house sodium carbonate/sodium chloride solutions were used for standard checks on daily basis (i.e., for each daily run). DIC Certified Reference Material solutions from Dickson/Scripps were used less frequently (6 months to annually depending on frequency of sample analysis) to determine/update the calibration factor for DIC concentrations. The standard deviations of multiple replicates of the CRM or daily standard were used to determine the reported uncertainty in DIC. Reported in this data report are also data from collaborating labs at the University of Delaware (Cai) and Texas A&M University-Corpus Christi (Hu). As our USM lab did not participate in a previous laboratory intercomparison, we sent replicate samples to our colleagues at these intercalibrated labs as a measure of our external reproducibility.; Replicate information: In general triplicate glass bottle samples were taken from the same Niskin bottle. The reported value is the average of triplicate analyses. In cases where we sent replicates to another lab for intercomparison, triplicate samples were also provided to the other lab.; Standardization description: The UIC Coulometer produces an absolute value of carbon analyzed, not requiring a standard curve. We used the apparent value measured on the Dickson CRM to calculate the "calibration factor", described by Dickson et al. (2007), to correct measured DIC values.; Standardization frequency: Daily; CRM manufacturer: Dickson/Scripps; CRM batch number: 183; Preservation method: HgCl2; Preservative volume: 50 μl of 50% saturated reagent grade HgCl2 solution added to 250 mL sample; Preservative correction: No preservative correction was made.; Uncertainty: 0.6%; Method reference: Dickson et al. 2007; Researcher name: Christopher Hayes; Researcher institution: University of Southern Mississippi Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: micro-mole/kg; Observation type: profile; In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: Niskin bottle; Analyzing instrument: Alkalinity titrator; Type of titration: Gran; Cell type (open or closed): open; Detailed sampling and analyzing information: A glass 250 mL wide-mouth Pyrex bottle was triple rinsed with sample water and then filled smoothly and overfilled with half a sample bottle volume. Following collection, the headspace was adjusted by removing seawater so that 1% of the bottle volume was left to allow for water expansion (i.e., 2.5 mL headspace for a 250 mL bottle). The samples were amended with 50 μl of 50% saturated reagent grade HgCl2 solution, capped tight with o-ring seal, stored in a cooler for transportation and then in a refrigerator until analysis (usually within 3-5 days). Samples were analyzed for TA by Gran Titration (Gran 1952) on an Apollo SciTech, Newark, DE, Total Alkalinity Titrator AS-ALK2 on the day following DIC analysis. In-house sodium carbonate/sodium chloride solutions were used for standard checks on daily basis (i.e., for each daily run). TA Certified Reference Material solutions from Dickson/Scripps were used less frequently (6 months to annually depending on frequency of sample analysis) to check the acid concentration of the titrating acid and/or determine the volumetric systems were properly functioning. The standard deviations of multiple replicates of the CRM or daily standard were used to determine the reported uncertainty in Alkalinity. Gran function calculations to determine alkalinity from the titration are automated by the Apollo SciTech software. Reported in this data report are also data from collaborating labs at the University of Delaware (Cai) and Texas A&M University-Corpus Christi (Hu). As our USM lab did not participate in a previous laboratory intercomparison, we sent replicate samples to our colleagues at these intercalibrated labs as a measure of our external reproducibility.; Replicate information: In general triplicate glass bottle samples were taken from the same Niskin bottle. The reported value is the average of triplicate analyses. In cases where we sent replicates to another lab for intercomparison, triplicate samples were also provided to the other lab.; Standardization description: The AS-ALK2 titrator requires precise knowledge of the acid concentration of the hydrochloric acid/sodium chloride solution used for titration. We verified the concentration of our titration acid both by checking against in-house standard and the Dickson/Scripps solution. Additionally, we purchased a CRM acid from Dickson and analyzed the Dickson standard to verify the calibrationo of the system. Additionally, the volumetric based system required converting the alkalinity per volume to akalinity per mass using the density of the seawater sample based on the measured salinity and the 24 degree C temperature of the measured sample set by water jacket during measurement. The pH meter on the alkalintiy titrator was daily calibrated using standard Fisher buffer solutions.; Standardization frequency: Daily; CRM manufacturer: Dickson/Scripps; CRM batch number: 183; Preservation method: HgCl2; Preservative volume: 50 microliters of 50% saturated HgCl2 solution; Preservative correction: No preservative correction; TA blank correction: No blank correction; Uncertainty: 0.1%; Method reference: Gran (1952); Researcher name: Christopher Hayes; Researcher institution: University of Southern Mississippi Parameter or Variable: Sea Surface Temperature; Abbreviation: SST; Unit: Deg. Cesius; Controlled vocabulary name: Sea Surface Temperature; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation; Sampling instrument: water collection with pump; Analyzing instrument: Seabird sensors Parameter or Variable: Sea Surface Salinity; Abbreviation: Salinity; Controlled vocabulary name: Sea Surface Salinity; Observation type: surface underway; In-situ / Manipulation / Response variable: in-situ observation; Sampling instrument: water collection with pump; Analyzing instrument: Seabird sensors asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian bottle bottle any type of water bottle sampling device Generic name for water collection device; usually used to determine temperature, salinity and provide water aliquots for measurement of a wide range of parameters; often referred to by a specific type of water sampling bottle, such as a Nansen or Niskin bottle. 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 temperature sensor temperature sensor A sensor used to measure temperature. titrator titrator titrator R/V Acadiana Updated information from ICES for the vessel ACADIANA from UNITED STATES. Name : ACADIANA Flag : UNITED STATES - US (ISO Country Code) Title : R/V Platform Class : 31 Research vessel Commissioned Date : 1987 Current Length : 17.7 Notes : WOD code 10013. The vessel is outfitted to support research and educational activities in Louisiana coastal bays and nearshore waters. Vessel active at least since 1987. Additional Information Sources: - http://lumconvessels.com/rv-acadiana - http://pubs.usgs.gov/circ/circ1133/big-sample.html General Comments: Commissioned date is at least from 1987 according to http://pubs.usgs.gov/circ/circ1133/big-sample.html The R/V Acadiana was designed and built by Breaux's Bay craft, Inc. in Loreauville, LA with funding for her construction provided by the Louisiana Universities Marine Consortium. Home port is at the Defelice Marine Center in Cocodrie, LA. The vessel is outfitted to support research and educational activities in Louisiana coastal bays and nearshore waters. Submitted to ICES on 2014-09-25. Confirmed by NOAA on 2015-01-09.