gov.noaa.nodc:0306569 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 2026-07-28T13:45:50Z 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, water temperature and salinity measured from discrete surface samples, taken at the site of GraysRf_81W_31N mooring in Gray’s Reef National Marine Sanctuary, East Coast of the United States on 2024-05-26 (NCEI Accession 0306569) 2025-07-30 publication 2025-07-25 creation International DOI Foundation (IDF) 10.25921/jxx5-js92 NOAA National Centers for Environmental Information gov.noaa.nodc:0306569 NCEI Archive Management System 0306569 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 Scott Noakes University of Georgia (UGA) snoakes@uga.edu https://uga.edu/ HTTPS University of Georgia (UGA) website Institution web page information resourceProvider University of Georgia (UGA) https://uga.edu/ HTTPS University of Georgia (UGA) website Institution web page information resourceProvider Scott Noakes University of Georgia (UGA) snoakes@uga.edu https://uga.edu/ HTTPS University of Georgia (UGA) website Institution web page information principalInvestigator Noakes, Scott University of Georgia https://uga.edu/ HTTPS University of Georgia (UGA) website Institution web page information author University of Georgia (UGA) https://uga.edu/ HTTPS University of Georgia (UGA) website Institution web page information contributor tableDigital This NCEI accession consists of dissolved inorganic carbon, total alkalinity, pH, water temperature and salinity measured from discrete surface samples, taken at the site of GraysRf_81W_31N mooring in Gray’s Reef National Marine Sanctuary, East Coast of the United States on 2024-05-26. Operation of the Grays Reef time-series mooring has been a multi-organization effort which has successfully collected high-resolution data since 2006. The mooring is located in the South Atlantic Bight offshore Georgia, USA and within the boundaries of Gray’s Reef National Marine Sanctuary. It sits along the divide between the inner and middle shelf with water depths of 20 m. Water chemistry is primarily controlled by the middle shelf oceanic dynamics, but during heavy rain events, it can be affected by freshwater plumes coming from the numerous rivers along the Georgia and South Carolina coast. Temperature also plays a major role in the partial pressure of carbon dioxide (pCO2) variability with seasonal changes being apparent. During summer months, GRNMS acts as a CO2 source to the atmosphere while during winter months it is a CO2 sink. The benthic community at GRNMS has proven to be hardy enduring large seasonal swings of seawater CO2 and pH. This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Information: NOAA/SECOORA (National Ocean Acidification Observing Network (NOA-ON) Time-Series of Gray’s Reef Mooring offshore Georgia, USA, NA21NOS0120097) 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:0306569 Preview graphic PNG 0306569 NCEI ACCESSION NUMBER 2025-07-24 publication DISSOLVED INORGANIC CARBON (DIC) pH SALINITY total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS bottle carbon dioxide (CO2) gas analyzer conductivity sensor pH sensor temperature sensor titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample surface measurements time series theme NODC OBSERVATION TYPES THESAURUS CHARTER/FISHING BOATS platform NODC PLATFORM NAMES THESAURUS University of Georgia dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS University of Georgia dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Ocean Carbon and Acidification Data System (OCADS) US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP) project NODC PROJECT NAMES THESAURUS East Coast - US/Canada Gray's Reef National Marine Sanctuary North Atlantic Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication Time series project Cruise ID Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords 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 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 Time series theme OCADS Study Type DIC TA pH theme Provider Variable Abbreviations CO2 ANALYZERS > CO2 ANALYZERS CONDUCTIVITY METERS > CONDUCTIVITY METERS PH METERS > PH METERS 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 OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC 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 East Coast - US/Canada Gray's Reef National Marine Sanctuary North Atlantic Ocean place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Noakes, Scott (2025). Dissolved inorganic carbon, total alkalinity, pH, water temperature and salinity measured from discrete surface samples, taken at the site of GraysRf_81W_31N mooring in Gray’s Reef National Marine Sanctuary, East Coast of the United States on 2024-05-26 (NCEI Accession 0306569). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/jxx5-js92. 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 These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) 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 Mooring Grays Reef (Buoy Position: 31.40°N, 80.87°W) 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Moorings/Grays_Reef.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Moorings/Grays_Reef.html Related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital crossReference project eng; USA utf8 environment oceans 80.8667 80.8667 31.4027 31.4027 2024-05-26 2024-05-26 This data package (Submission ID: BJEZAAKP6) 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 0.208 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0306569.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/jxx5-js92 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/306569 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/306569 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0233/0306569/ 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 0306569 v1.1 was published. 2025-07-30T16:03:33Z NCEI Accession 0306569 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0306569/1.1 HTTPS NCEI Accession 0306569 v1.1 published 2025-07-30T16:03:33Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: DIC; Sampling instrument: Bulk water collection; Analyzing instrument: Apollo Scitech AS-C6 DIC Analyzer Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: umol/kg; Observation type: Lab experiment; Measured or calculated: MEASURED; Sampling instrument: Bulk water collection; Analyzing instrument: Metrohm OMNIS titrator Parameter or Variable: pH; Abbreviation: pH; pH scale: TOTALSCALE(T); Observation type: Lab experiment; Measured or calculated: MEASURED; Sampling instrument: Bulk water collection; Analyzing instrument: Ocean Optics Spectrometer 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. conductivity sensor conductivity sensor OMEGA non-contact conductivity sensor CDCN-108 or Honeywell DirectLine DL423 Sensor Module, for example Water conductivity sensors are used to measure how well a solution conducts an electrical current. 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. titrator titrator titrator CHARTER/FISHING BOATS CHARTER/FISHING BOATS