{"_index":"metadata_v1","_type":"_doc","_id":"gov.noaa.nodc:0309698","_version":53,"_seq_no":86945571,"_primary_term":200,"_ignored":["processStep.keyword"],"found":true,"_source":{"src_source_type_s":"WAF","src_source_uri_s":"WAF:https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/","src_source_name_s":"NCEI-Accessions","src_uri_s":"https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0309698.xml","src_lastupdate_dt":"2026-04-17T14:48:29Z","src_source_ref_s":"b405284fdbcb42788bf94e755ca24d01","src_task_ref_s":"93eb30b75e5544c1a8a52b262a5f3575","sys_created_dt":"2025-11-22T16:29:16.663Z","sys_modified_dt":"2026-04-18T08:03:36.786Z","sys_xmlmodified_dt":"2026-04-18T08:03:36.786Z","sys_owner_s":"NCEI","sys_owner_txt":"NCEI","sys_metadatatype_s":"iso19115-2","sys_xml_clob":"\n \n gov.noaa.nodc:0309698\n \n \n eng\n \n \n utf8\n \n \n dataset\n \n \n \n \n NOAA National Centers for Environmental Information\n \n \n \n \n \n \n ncei.info@noaa.gov\n \n \n \n \n \n \n https://www.ncei.noaa.gov/contact\n \n \n HTTPS\n \n \n NOAA Contact Information\n \n \n Information for contacts at NCEI.\n \n \n information\n \n \n \n \n \n \n custodian\n \n \n \n \n 2026-04-03T08:17:43Z\n \n \n ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data\n \n \n ISO 19115-2:2009(E)\n \n \n \n \n \n \n Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12 (NCEI Accession 0309698)\n \n \n \n \n 2025-12-02\n \n \n publication\n \n \n \n \n \n \n 2025-11-21\n \n \n creation\n \n \n \n \n \n \n \n \n \n International DOI Foundation (IDF)\n \n \n \n \n \n 10.25921/18x1-ww47\n \n \n \n \n \n \n \n \n NOAA National Centers for Environmental Information\n \n \n \n \n \n gov.noaa.nodc:0309698\n \n \n \n \n \n \n \n \n NCEI Archive Management System\n \n \n \n \n \n 0309698\n \n \n \n \n \n \n NOAA National Centers for Environmental Information\n \n \n \n \n \n \n ncei.info@noaa.gov\n \n \n \n \n \n \n https://www.ncei.noaa.gov/contact\n \n \n HTTPS\n \n \n NCEI Contact Information\n \n \n Information for contacts at NCEI.\n \n \n information\n \n \n \n \n \n \n publisher\n \n \n \n \n \n \n Charles Featherstone\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)\n \n \n \n \n \n \n Charles.Featherstone@noaa.gov\n \n \n \n \n \n \n https://www.aoml.noaa.gov/\n \n \n HTTPS\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n resourceProvider\n \n \n \n \n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)\n \n \n \n \n \n \n https://www.aoml.noaa.gov/\n \n \n HTTPS\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n resourceProvider\n \n \n \n \n \n \n Rik Wanninkhof\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)\n \n \n \n \n \n \n Rik.Wanninkhof@noaa.gov\n \n \n \n \n \n \n https://www.aoml.noaa.gov/\n \n \n HTTPS\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n principalInvestigator\n \n \n \n \n \n \n Leticia Barbero\n \n \n Cooperative Institute for Satellite Earth System Studies (CISESS)\n \n \n \n \n \n \n Leticia.Barbero@noaa.gov\n \n \n \n \n \n \n https://cisess.umd.edu/\n \n \n HTTPS\n \n \n Cooperative Institute for Satellite Earth System Studies (CISESS) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n principalInvestigator\n \n \n \n \n \n \n Donald Christopher Melrose\n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n \n \n \n \n Chris.Melrose@NOAA.gov\n \n \n \n \n \n \n principalInvestigator\n \n \n \n \n \n \n Denis Pierrot\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)\n \n \n \n \n \n \n denis.pierrot@noaa.gov\n \n \n \n \n \n \n https://www.aoml.noaa.gov/\n \n \n HTTPS\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n principalInvestigator\n \n \n \n \n \n \n Christopher C. Taylor\n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n \n \n \n \n chris.1.taylor@noaa.gov\n \n \n \n \n \n \n principalInvestigator\n \n \n \n \n \n \n Paula S. Fratantoni\n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n principalInvestigator\n \n \n \n \n \n \n Harvey J. Walsh\n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n principalInvestigator\n \n \n \n \n \n \n David W. Townsend\n \n \n University of Maine (UMO)\n \n \n \n \n \n \n davidt@umaine.edu\n \n \n \n \n \n \n https://umaine.edu/\n \n \n HTTPS\n \n \n University of Maine (UMO) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n principalInvestigator\n \n \n \n \n \n \n Maura A. Thomas\n \n \n University of Maine (UMO)\n \n \n \n \n \n \n mthomas@umaine.edu\n \n \n \n \n \n \n https://umaine.edu/\n \n \n HTTPS\n \n \n University of Maine (UMO) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n principalInvestigator\n \n \n \n \n \n \n Barbero, Leticia\n \n \n Cooperative Institute for Satellite Earth System Studies (CISESS)\n \n \n \n \n \n \n https://cisess.umd.edu/\n \n \n HTTPS\n \n \n Cooperative Institute for Satellite Earth System Studies (CISESS) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n author\n \n \n \n \n \n \n Wanninkhof, Rik\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)\n \n \n \n \n \n \n https://www.aoml.noaa.gov/\n \n \n HTTPS\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n author\n \n \n \n \n \n \n Pierrot, Denis\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)\n \n \n \n \n \n \n https://www.aoml.noaa.gov/\n \n \n HTTPS\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n author\n \n \n \n \n \n \n Melrose, D. Christopher\n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n author\n \n \n \n \n \n \n Fratantoni, Paula S.\n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n author\n \n \n \n \n \n \n Walsh, Harvey J.\n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n author\n \n \n \n \n \n \n Townsend, David W.\n \n \n University of Maine (UMO)\n \n \n \n \n \n \n davidt@umaine.edu\n \n \n \n \n \n \n https://umaine.edu/\n \n \n HTTPS\n \n \n University of Maine (UMO) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n author\n \n \n \n \n \n \n Thomas, Maura A.\n \n \n University of Maine (UMO)\n \n \n \n \n \n \n https://umaine.edu/\n \n \n HTTPS\n \n \n University of Maine (UMO) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n author\n \n \n \n \n \n \n Taylor, Christopher C.\n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n \n \n \n \n chris.1.taylor@noaa.gov\n \n \n \n \n \n \n author\n \n \n \n \n \n \n NOAA Northeast Fisheries Science Center (NMFS/NEFSC)\n \n \n contributor\n \n \n \n \n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)\n \n \n \n \n \n \n https://www.aoml.noaa.gov/\n \n \n HTTPS\n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n contributor\n \n \n \n \n \n \n University of Maine (UMO)\n \n \n \n \n \n \n https://umaine.edu/\n \n \n HTTPS\n \n \n University of Maine (UMO) website\n \n \n Institution web page\n \n \n information\n \n \n \n \n \n \n contributor\n \n \n \n \n tableDigital\n \n \n \n \n This data set consists of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry ultimately resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores, but also on species of commercial interest such as oysters or crabs. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the Ecosystem Monitoring Cruises (ECOMON) are utilized to collect water samples to measure water column inorganic carbon and hydrographic parameters including nutrients. Samples are collected at three depths (surface, mid-depth and near bottom) at select stations on a quarterly basis in the northeastern Atlantic continental shelf region off the United States. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic & Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH and total alkalinity concentrations. Additional samples are analyzed for nutrient concentrations at the University of Maine. These data are used to monitor short-long term coastal ocean acidification trends.\n \n \n To measure key carbon, physical and biogeochemical parameters in coastal waters of the US in relation to Ocean Acidification and monitor changes over time.\n \n \n Funding Information: NOAA Ocean Acidification Program (Monitoring Carbonate Chemistry and Biological Indicators of Ocean Acidification on the Northeast Fisheries Science Center’s Ecosystems Monitoring (EcoMon) and Scallop Survey (HabCam) Cruises, 25143)\n \n \n Funding Information: NOAA's Ocean Acidification Program (East and Gulf Coast Ocean Acidification Observing Support. Monitoring of Water Column DIC, TAlk, and pH on the Northeast U.S. Shelf and the Development of Ocean Acidification Indicators to Inform Marine Resource Management, Ocean acidification measurements from Ships of opportunity, (SOOP-OA) #20711)\n \n \n completed\n \n \n historicalArchive\n \n \n \n \n NOAA National Centers for Environmental Information\n \n \n \n \n \n \n ncei.info@noaa.gov\n \n \n \n \n \n \n https://www.ncei.noaa.gov/contact\n \n \n HTTPS\n \n \n NCEI Contact Information\n \n \n Information for contacts at NCEI.\n \n \n information\n \n \n \n \n \n \n pointOfContact\n \n \n \n \n \n \n asNeeded\n \n \n \n \n \n \n https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0309698\n \n \n Preview graphic\n \n \n PNG\n \n \n \n \n \n \n 0309698\n \n \n \n \n NCEI ACCESSION NUMBER\n \n \n \n \n 2025-11-20\n \n \n publication\n \n \n \n \n \n \n \n \n \n \n AMMONIUM (NH4)\n \n \n DEPTH - OBSERVATION\n \n \n DISSOLVED INORGANIC CARBON (DIC)\n \n \n DISSOLVED OXYGEN\n \n \n nitrate + nitrite content (concentration)\n \n \n pH\n \n \n phosphate\n \n \n SALINITY\n \n \n silicate\n \n \n total alkalinity\n \n \n WATER DENSITY\n \n \n WATER TEMPERATURE\n \n \n theme\n \n \n \n \n NODC DATA TYPES THESAURUS\n \n \n \n \n \n \n \n \n \n carbon dioxide (CO2) gas analyzer\n \n \n CTD\n \n \n Niskin bottle\n \n \n nutrient autoanalyzer\n \n \n pH sensor\n \n \n salinometer\n \n \n temperature sensor\n \n \n titrator\n \n \n instrument\n \n \n \n \n NODC INSTRUMENT TYPES THESAURUS\n \n \n \n \n \n \n \n \n \n chemical\n \n \n discrete sample\n \n \n physical\n \n \n profile\n \n \n theme\n \n \n \n \n NODC OBSERVATION TYPES THESAURUS\n \n \n \n \n \n \n \n \n \n NOAA Ship Pisces\n \n \n platform\n \n \n \n \n NODC PLATFORM NAMES THESAURUS\n \n \n \n \n \n \n \n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory\n \n \n NOAA Northeast Fisheries Science Center\n \n \n University of Maine\n \n \n dataCentre\n \n \n \n \n NODC COLLECTING INSTITUTION NAMES THESAURUS\n \n \n \n \n \n \n \n \n \n NOAA Atlantic Oceanographic and Meteorological Laboratory\n \n \n dataCentre\n \n \n \n \n NODC SUBMITTING INSTITUTION NAMES THESAURUS\n \n \n \n \n \n \n \n \n \n Ocean Carbon and Acidification Data System (OCADS)\n \n \n US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)\n \n \n project\n \n \n \n \n NODC PROJECT NAMES THESAURUS\n \n \n \n \n \n \n \n \n \n East Coast - US/Canada\n \n \n New York Bight\n \n \n North Atlantic Ocean\n \n \n place\n \n \n \n \n NODC SEA AREA NAMES THESAURUS\n \n \n \n \n \n \n \n \n \n oceanography\n \n \n theme\n \n \n \n \n WMO_CategoryCode\n \n \n \n \n 2012-09-15\n \n \n publication\n \n \n \n \n \n \n \n \n \n \n DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce\n \n \n DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce\n \n \n UMAINE > University of Maine\n \n \n dataCentre\n \n \n \n \n Global Change Master Directory (GCMD) Data Center Keywords\n \n \n \n \n 2026\n \n \n revision\n \n \n \n \n 23\n \n \n \n \n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\n \n \n \n \n \n \n Greenbelt\n \n \n MD\n \n \n \n \n \n \n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\n \n \n HTTPS\n \n \n GCMD Keyword Forum Page\n \n \n 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\n \n \n information\n \n \n \n \n \n \n custodian\n \n \n \n \n \n \n \n \n \n \n PC2406\n \n \n project\n \n \n \n \n Cruise ID\n \n \n \n \n \n \n \n \n \n 334B20241027\n \n \n project\n \n \n \n \n EXPOCODE\n \n \n \n \n \n \n \n \n \n Ocean Acidification Program (OAP)\n \n \n Ocean Carbon and Acidification Data System (OCADS) Project\n \n \n project\n \n \n \n \n Ocean Acidification Search Keywords\n \n \n \n \n \n \n \n \n \n Coastal, OAP\n \n \n project\n \n \n \n \n Reference Section ID\n \n \n \n \n \n \n \n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY\n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA\n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON\n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE\n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE\n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN\n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH\n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE\n \n \n EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE\n \n \n EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE\n \n \n EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY\n \n \n EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY\n \n \n theme\n \n \n \n \n Global Change Master Directory (GCMD) Science Keywords\n \n \n \n \n 2026\n \n \n revision\n \n \n \n \n 23\n \n \n \n \n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\n \n \n \n \n \n \n Greenbelt\n \n \n MD\n \n \n \n \n \n \n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\n \n \n HTTPS\n \n \n GCMD Keyword Forum Page\n \n \n 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\n \n \n information\n \n \n \n \n \n \n custodian\n \n \n \n \n \n \n \n \n \n \n Discrete measurement\n \n \n Profile\n \n \n theme\n \n \n \n \n OCADS Study Type\n \n \n \n \n \n \n \n \n \n AMMONIA\n \n \n CTDOXY\n \n \n CTDOXYmg\n \n \n CTDPRS\n \n \n CTDSAL\n \n \n CTDTMP\n \n \n DIC\n \n \n Depth_sampling\n \n \n Depth_station\n \n \n NITRIT+NITRAT\n \n \n PHSPHT\n \n \n SILCAT\n \n \n Sigma-Theta\n \n \n TAlk\n \n \n pH\n \n \n theme\n \n \n \n \n Provider Variable Abbreviations\n \n \n \n \n \n \n \n \n \n AUTOANALYZER > AUTOANALYZER\n \n \n CO2 ANALYZERS > CO2 ANALYZERS\n \n \n CTD > Conductivity, Temperature, Depth\n \n \n NISKIN BOTTLES\n \n \n PH METERS > PH METERS\n \n \n SALINOMETERS\n \n \n TEMPERATURE SENSORS > TEMPERATURE SENSORS\n \n \n instrument\n \n \n \n \n Global Change Master Directory (GCMD) Instrument Keywords\n \n \n \n \n 2026\n \n \n revision\n \n \n \n \n 23\n \n \n \n \n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\n \n \n \n \n \n \n Greenbelt\n \n \n MD\n \n \n \n \n \n \n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\n \n \n HTTPS\n \n \n GCMD Keyword Forum Page\n \n \n 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\n \n \n information\n \n \n \n \n \n \n custodian\n \n \n \n \n \n \n \n \n \n \n Ships\n \n \n platform\n \n \n \n \n Global Change Master Directory (GCMD) Platform Keywords\n \n \n \n \n 2026\n \n \n revision\n \n \n \n \n 23\n \n \n \n \n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\n \n \n \n \n \n \n Greenbelt\n \n \n MD\n \n \n \n \n \n \n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\n \n \n HTTPS\n \n \n GCMD Keyword Forum Page\n \n \n 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\n \n \n information\n \n \n \n \n \n \n custodian\n \n \n \n \n \n \n \n \n \n \n PISCES (call sign: WTDL, ICES code: 334B, 2009-)\n \n \n platform\n \n \n \n \n ICES/SeaDataNet Ship Codes\n \n \n \n \n \n \n \n \n \n OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN\n \n \n place\n \n \n \n \n Global Change Master Directory (GCMD) Location Keywords\n \n \n \n \n 2026\n \n \n revision\n \n \n \n \n 23\n \n \n \n \n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\n \n \n \n \n \n \n Greenbelt\n \n \n MD\n \n \n \n \n \n \n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\n \n \n HTTPS\n \n \n GCMD Keyword Forum Page\n \n \n 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\n \n \n information\n \n \n \n \n \n \n custodian\n \n \n \n \n \n \n \n \n \n \n New York Bight\n \n \n North Atlantic Ocean\n \n \n Northeast U.S. Shelf\n \n \n place\n \n \n \n \n Provider Geographic Names\n \n \n \n \n \n \n \n \n \n accessLevel: Public\n \n \n \n \n \n \n otherRestrictions\n \n \n Cite as: Barbero, Leticia; Wanninkhof, Rik; Pierrot, Denis; Melrose, D. Christopher; Fratantoni, Paula S.; Walsh, Harvey J.; Townsend, David W.; Thomas, Maura A.; Taylor, Christopher C. (2025). Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12 (NCEI Accession 0309698). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/18x1-ww47. Accessed [date].\n \n \n \n \n \n \n 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.\n \n \n \n \n \n \n otherRestrictions\n \n \n 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.\n \n \n \n \n \n \n license\n \n \n 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).\n \n \n SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0)\n \n \n \n \n \n \n \n \n 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\n \n \n \n \n 2022-04\n \n \n publication\n \n \n \n \n \n \n \n \n \n \n \n https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system\n \n \n HTTPS\n \n \n https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system\n \n \n OCADS website\n \n \n information\n \n \n \n \n \n \n \n \n \n \n \n NOAA National Centers for Environmental Information\n \n \n author\n \n \n \n \n \n \n NOAA National Centers for Environmental Information (NCEI)\n \n \n publisher\n \n \n \n \n documentDigital\n \n \n [accessed 2024-02-08]\n \n \n \n \n crossReference\n \n \n program\n \n \n \n \n \n \n \n \n AOML Coastal Cruises\n \n \n \n \n 2022\n \n \n publication\n \n \n \n \n \n \n \n \n \n \n \n https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/Bigelow.html\n \n \n HTTPS\n \n \n https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/Bigelow.html\n \n \n Related resource\n \n \n information\n \n \n \n \n \n \n \n \n \n \n \n NOAA National Centers for Environmental Information (NCEI)\n \n \n publisher\n \n \n \n \n documentDigital\n \n \n \n \n crossReference\n \n \n project\n \n \n \n \n eng; USA\n \n \n utf8\n \n \n environment\n \n \n oceans\n \n \n \n \n \n \n -75.4683\n \n \n -68.3317\n \n \n 35.997\n \n \n 41.1\n \n \n \n \n \n \n \n 2024-10-27\n 2024-11-12\n \n \n \n \n \n \n \n This data package (Submission ID: BJNXZLHN5) 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.\n \n \n \n \n \n \n \n \n \n \n NOAA National Centers for Environmental Information\n \n \n \n \n \n \n +1-301-713-3277\n \n \n \n \n \n \n ncei.info@noaa.gov\n \n \n \n \n \n \n pointOfContact\n \n \n \n \n \n \n In most cases, electronic downloads of the data are free. 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You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).\n \n \n download\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n dataset\n \n \n \n \n \n \n \n \n NCEI Accession 0309698 v1.1 was published.\n \n \n 2025-12-02T18:08:38Z\n \n \n \n \n \n \n NCEI Accession 0309698 v1.1\n \n \n \n \n \n publication\n \n \n \n \n \n \n \n \n \n \n \n https://www.ncei.noaa.gov/archive/accession/0309698/1.1\n \n \n HTTPS\n \n \n NCEI Accession 0309698 v1.1\n \n \n published 2025-12-02T18:08:38Z\n \n \n download\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n dataset\n \n \n \n \n \n \n \n \n Parameter or Variable: Dissolved Inorganic Carbon;\nAbbreviation: DIC;\nUnit: micro-mol/kg;\nObservation type: Profile and Flow-Through;\nIn-situ / Manipulation / Response variable: IN-SITUOBSERVATION;\nMeasured or calculated: MEASURED;\nSampling instrument: Niskin bottle;\nAnalyzing instrument: Two systems consisting of a coulometer (UIC Inc.) coupled with a Dissolved Inorganic Carbon Extractor (DICE) inlet system. DICE was developed by Esa Peltola and Denis Pierrot of NOAA/AOML and Dana Greeley of NOAA/PMEL to modernize a carbon extractor called SOMMA (Johnson et al. 1985, 1987, 1993, and 1999; Johnson 1992);\nDetailed sampling and analyzing information: Samples for total dissolved inorganic carbon (DIC) measurements were drawn according to procedures outlined in the Guide to best practices for ocean CO2 measurements (Dickson et al., 2007) from Niskin bottles into cleaned 500-ml glass bottles. Bottles were rinsed and filled from the bottom, leaving 6 ml of headspace; care was taken not to entrain any bubbles. After 0.2 ml of saturated HgCl2 solution was added as a preservative, the sample bottles were sealed with glass stoppers lightly covered with Apiezon-L grease and were stored at room temperature to be sent back to the lab for analysis after the cruise. The analysis was done by coulometry with two analytical systems (AOML5 and AOML6) used simultaneously. In the coulometric analysis of DIC, all carbonate species are converted to CO2 (gas) by addition of excess hydrogen ion (acid) to the seawater sample, and the evolved CO2 gas is swept into the titration cell of the coulometer with pure air or compressed nitrogen, where it reacts quantitatively with a proprietary reagent based on ethanolamine to generate hydrogen ions. In this process, the solution changes from blue to colorless, triggering a current through the cell and causing coulometrical generation of OH minus ions at the anode. The OH ions react with the H+, and the solution turns blue again. A beam of light is shone through the solution, and a photometric detector at the opposite side of the cell senses the change in transmission. Once the percent transmission reaches its original value, the coulometric titration is stopped, and the amount of CO2 that enters the cell is determined by integrating the total charge during the titration. The volume of the pipette used to deliver the sample in each system was determined with aliquots of distilled water at known temperature. The weights with the appropriate densities were used to determine the volume of the pipette. Calculation of the amount of CO2 injected was according to the CO2 handbook (Dickson et al., 2007).The instrument has a salinity sensor, but all DIC values were recalculated to a molar weight (micro-mol/kg) using density obtained from the CTD salinity. The DIC values were corrected for dilution by 0.2 ml of saturated HgCl2 used for sample preservation (Measured DIC*1.00037). A correction was also applied for the offset from the CRM. This additive correction was applied for each cell using the CRM value obtained in the beginning of the cell. Please consult the accompanying Readme file for additional details.;\nReplicate information: 58 samples each 500-ml, 6 sets of duplicate samples.;\nStandardization description: The coulometers were calibrated by injecting aliquots of pure CO2 (99.99%) by means of an 8-port valve outfitted with two sample loops with known gas volumes bracketing the amount of CO2 extracted from the water samples for the two AOML systems.;\nStandardization frequency: The stability of each coulometer cell solution was confirmed three different ways: two sets of gas loops were measured at the beginning; also the Certified Reference Material (CRM), supplied by Dr. A. Dickson of UCSD, were measured at the beginning; and the duplicate samples at the beginning, middle, and end of each cell solution. The coulometer cell solution was replaced after 25 mg of carbon was titrated, typically after 9 to 12 hours of continuous use.;\nCRM manufacturer: Dr. A. Dickson of UCSD;\nCRM batch number: Batch 210;\nPreservation method: saturated HgCl2;\nPreservative volume: 0.2 ml;\nPreservative correction: The DIC values were corrected for dilution by 0.2 ml of saturated HgCl2 used for sample preservation. The total water volume of the sample bottles was 540 ml (calibrated by Esa Peltola, AOML). The correction factor used for dilution was 1.00037.;\nQuality 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.;\nMethod reference: Dickson, A.G., Sabine, C.L. and Christian, J.R. (Eds.) 2007. Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 191 pp. Johnson, K.M., Kortzinger, A.; Mintrop, L.; Duinker, J.C.; and Wallace, D.W.R. (1999). Coulometric total carbon dioxide analysis for marine studies: Measurement and internal consistency of underway surface TCO2 concentrations. Marine Chemistry 67:123 to 44.Johnson, K.M., Wills, K.D.; Butler, D.B.; Johnson, W.K.; and Wong, C.S. (1993). Coulometric total carbon dioxide analysis for marine studies: Maximizing the performance of an automated gas extraction.Johnson, K.M. (1992). Operator Manual: Single-Operator Multiparameter Metabolic Analyzer (SOMMA) for Total Carbon Dioxide (CT) with Coulometric Detection. Brookhaven National Laboratory, Brookhaven, N.Y. Johnson, K.M.; Williams, P.J.; Brandstrom, L.; and McN. Sieburth, J. (1987). Coulometric total carbon analysis for marine studies: Automation and calibration. Marine Chemistry 21:117 to 33.;\nResearcher name: Rik Wanninkhof;\nResearcher institution: NOAA Atlantic Oceanographic and Meteorological Laboratory\n \n \n \n \n \n \n Parameter or Variable: Total alkalinity;\nAbbreviation: TAlk;\nUnit: micro-mol/kg;\nObservation type: Profile and Flow-Through;\nIn-situ / Manipulation / Response variable: IN-SITUOBSERVATION;\nMeasured or calculated: MEASURED;\nSampling instrument: Niskin bottle;\nAnalyzing instrument: Semi-automatic titration systems, System 1 consists of a Metrohm 765 Dosimat titrator, a pH meter (Orion 720A, ThermoScientific), a ROSS half cell pH glass electrode (Orion 9101BN, ThermoScientific) and a reference electrode (Orion 900200, ThermoScientific). System 2 consists of a Metrohm 665 Dosimat titrator, a pH meter (Orion 2 star pH Benchtop, ThermoScientific), a ROSS half cell pH glass electrode (Orion 9101BN, ThermoScientific) and a reference electrode (Orion 900200, ThermoScientific).;\nType of titration: Full Titration;\nCell type (open or closed): OPEN;\nCurve fitting method: Least-Square Analysis;\nDetailed sampling and analyzing information: All of the samples were run using leftover water from the same sample bottles used for DIC and pH. Please refer to DIC for detailed information on sampling and conservation of samples. For each measurement, approximately 200 ml of water sample were titrated with an HCl solution provided by Dr. Andrew Dickson of UCSD (0.25175 moles per kilogram-solution). Please consult the accompanying Readme file for additional details.;\nReplicate information: 58 samples each 500-ml, 6 sets of duplicate samples.;\nStandardization description: 2 CRM samples were run daily on each cell, before and after the seawater samples. The Total Alkalinity for the water samples was corrected using the daily averaged ratios between the certified and measured values of the 2 CRMs run on each cell. This TA titration system has a precision of 0.1 %. All the TA values were directly measured with reference to Certified Reference Material. The accuracy after correction is 0.1%. Please check attached pdf for more details.;\nStandardization frequency: All values were directly measured with reference to Certified Reference Material (Dickson, UCSD). 2 CRM samples were run daily on each cell.;\nCRM manufacturer: Dr. Andrew Dickson of UCSD;\nCRM batch number: CRM batch: 210;\nPreservation method: saturated HgCl2;\nPreservative volume: 0.2 ml;\nUncertainty: The precision of this method is better than 0.1% and accuracy is 0.1%.;\nQuality 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.;\nMethod reference: Millero, F. J., Zhang, J. Z., Lee, K., & Campbell, D. M. (1993). Titration alkalinity of seawater. Marine Chemistry, 44(2), 153-165.;\nResearcher name: Rik Wanninkhof;\nResearcher institution: NOAA Atlantic Oceanographic and Meteorological Laboratory\n \n \n \n \n \n \n Parameter or Variable: pH;\nAbbreviation: pH;\npH scale: TOTALSCALE(T);\nObservation type: Profile and Flow-Through;\nIn-situ / Manipulation / Response variable: IN-SITUOBSERVATION;\nMeasured or calculated: MEASURED;\nSampling instrument: Niskin bottle;\nAnalyzing instrument: Agilent 8453 spectrometer setup with a custom-made temperature-controlled cell holder;\nDetailed sampling and analyzing information: The same sample bottle was used for pH, DIC and Talk analyses, with pH being analyzed first. The samples were fixed with HgCl2 (refer to DIC for more information on sampling and storage). Samples were thermostated at 20 (+/- 0.05) degrees Celsius in a water bath. Approximately 80 ml of sample were extracted from each DIC sample bottle by syringe before DIC analysis to determine the pH. Temperature for each sample was measured before analysis using a Hart Scientific Fluke 1523 reference thermometer. Absorbance blanks were taken for each sample and 10 micro liter of purified m-cresol purple (10 mmol kg-1) were added for the analysis. The equations of Liu et al, 2011 formulated using the purified m-cresol purple indicator were used to determine pH of the samples. pH samples were analyzed at 20C. Please check accompanying readme file for additional details.;\nReplicate information: 58 samples each 500-ml, 6 sets of duplicate samples.;\nStandardization description: The pH is calibration-free.;\nAt what temperature was pH reported: 20 and 25 degrees Celsius;\nUncertainty: Please check attached pdf for more details;\nQuality 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.;\nMethod reference: Liu, X.; Patsavas, M.C.; and Byrne, R. H. (2011). Purification and characterization of meta-cresol purple for spectrophotometric seawater pH measurements. Environmental Science and Technology, 45(11), 4862-4868. doi: 10.1021/es200665d;\nResearcher name: Rik Wanninkhof;\nResearcher institution: NOAA Atlantic Oceanographic and Meteorological Laboratory\n \n \n \n \n \n \n Parameter or Variable: Depth of water at station;\nAbbreviation: Depth_station;\nUnit: meters;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: Surface underway and profile;\nMeasured or calculated: Measured or calculated;\nSampling instrument: Sounder or altimeter, models vary;\nDetailed sampling and analyzing information: Ship based sounder used when available. Depth from an altimeter on the CTD may also be used. Where neither of theses sources were available (typically due to water depth exceeding sounder's detection limit), depth may be estimated using the ETOPO1 bathymetry.;\nUncertainty: Uncertainty varies with source;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center\n \n \n \n \n \n \n Parameter or Variable: Depth of water at sample collection;\nAbbreviation: Depth_sampling;\nUnit: meters;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SBE 911plus CTD;\nUncertainty: plus or minus 1 meter (data has also been vertically binaveraged to 1 decibar bins);\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center\n \n \n \n \n \n \n Parameter or Variable: Water pressure;\nAbbreviation: CTDPRS;\nUnit: decibars;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SBE 911plus CTD;\nUncertainty: plus or minus decibar (data has also been vertically binaveraged to 1 decibar bins);\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center\n \n \n \n \n \n \n Parameter or Variable: Water temperature;\nAbbreviation: CTDTMP;\nUnit: degrees celsius (ITS-90);\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SBE 911plus CTD;\nUncertainty: plus or minus 0.001 degrees celsius;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center\n \n \n \n \n \n \n Parameter or Variable: Salinity;\nAbbreviation: CTDSAL;\nUnit: practical salinity scale of 1978;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Seasave 7, calculated from temperature and conductivity;\nSampling instrument: SBE 911plus CTD;\nDetailed sampling and analyzing information: CTD Salinity values were validated using water samples collected during profiles. Corrections were applied when needed.;\nUncertainty: plus or minus 0.01 PSS-78;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center\n \n \n \n \n \n \n Parameter or Variable: Potential density at surface pressure;\nAbbreviation: Sigma-Theta;\nUnit: kilograms per cubic meter minus 1000;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Calculated;\nSampling instrument: SBE 911plus CTD;\nUncertainty: plus or minus 0.01 kilograms per cubic meter;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center\n \n \n \n \n \n \n Parameter or Variable: Dissolved Oxygen;\nAbbreviation: CTDOXYmg;\nUnit: milligrams per liter;\nObservation type: Profile;\nMeasured or calculated: Measured;\nSampling instrument: SBE-43 dissolved oxygen sensor;\nUncertainty: plus or minus 2 percent of saturation;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center\n \n \n \n \n \n \n Parameter or Variable: Dissolved Oxygen;\nAbbreviation: CTDOXY;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nMeasured or calculated: Measured;\nSampling instrument: SBE-43 dissolved oxygen sensor;\nUncertainty: plus or minus 2 percent of saturation;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center\n \n \n \n \n \n \n Parameter or Variable: Silicic acid concentration;\nAbbreviation: SILCAT;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SeaBird 32 Carousel Water Sampler;\nAnalyzing instrument: The samples are analyzed using a Bran-Luebbe Autoanalyzer 3;\nDetailed sampling and analyzing information: Water samples collected during vertical CTD profiles, analysis of Samples performed by Maura Thomas, University of Maine;\nUncertainty: 0.22 micromolar detection limit;\nQuality flag convention: -999 indicates bad or missing data;\nMethod reference: Whitledge, T.E., D.M. Veidt, S.C. Mallow, C.J. Patton, C.D. Wirick. 1986. Automated nutrient analyses in seawater. Brookhaven National Laboratory, Publication BNL 38990, 177 p.;\nResearcher name: David Townsend and Maura Thomas;\nResearcher institution: University of Maine\n \n \n \n \n \n \n Parameter or Variable: Nitrate and Nitrite total concentration;\nAbbreviation: NITRIT+NITRAT;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SeaBird 32 Carousel Water Sampler;\nAnalyzing instrument: The samples are analyzed using a Bran-Luebbe Autoanalyzer 3;\nDetailed sampling and analyzing information: Water samples collected during vertical CTD profiles, analysis of Samples performed by Maura Thomas, University of Maine;\nUncertainty: 0.12 micromolar detection limit;\nQuality flag convention: -999 indicates bad or missing data;\nMethod reference: Whitledge, T.E., D.M. Veidt, S.C. Mallow, C.J. Patton, C.D. Wirick. 1986. Automated nutrient analyses in seawater. Brookhaven National Laboratory, Publication BNL 38990, 177 p.;\nResearcher name: David Townsend and Maura Thomas;\nResearcher institution: University of Maine\n \n \n \n \n \n \n Parameter or Variable: Ammonia concentration;\nAbbreviation: AMMONIA;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SeaBird 32 Carousel Water Sampler;\nAnalyzing instrument: The samples are analyzed using a Bran-Luebbe Autoanalyzer 3;\nDetailed sampling and analyzing information: Water samples collected during vertical CTD profiles, analysis of Samples performed by Maura Thomas, University of Maine;\nUncertainty: 0.14 micromolar detection limit;\nQuality flag convention: -999 indicates bad or missing data;\nMethod reference: Whitledge, T.E., D.M. Veidt, S.C. Mallow, C.J. Patton, C.D. Wirick. 1986. Automated nutrient analyses in seawater. Brookhaven National Laboratory, Publication BNL 38990, 177 p.;\nResearcher name: David Townsend and Maura Thomas;\nResearcher institution: University of Maine\n \n \n \n \n \n \n Parameter or Variable: Phosphate concentration;\nAbbreviation: PHSPHT;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: The samples are analyzed using a Bran-Luebbe Autoanalyzer 3;\nReplicate information: 0.17 micromolar detection limit;\nUncertainty: -999 indicates bad or missing data;\nQuality flag convention: Whitledge, T.E., D.M. Veidt, S.C. Mallow, C.J. Patton, C.D. Wirick. 1986. Automated nutrient analyses in seawater. Brookhaven National Laboratory, Publication BNL 38990, 177 p.;\nResearcher name: David Townsend and Maura Thomas;\nResearcher institution: University of Maine\n \n \n \n \n \n \n \n \n \n \n asNeeded\n \n \n Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.\n \n \n \n \n NOAA National Centers for Environmental Information\n \n \n custodian\n \n \n \n \n \n \n \n \n \n \n \n \n carbon dioxide (CO2) gas analyzer\n \n \n \n \n carbon dioxide (CO2) gas analyzer\n \n \n measures gaseous carbon dioxide\n\nCarbon 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.\n\nCarbon dioxide (CO2) gas analyzer works together with carbon dioxide (CO2) equilibrator (insttypes_id 184) to measure carbon dioxide in the water.\n\nTo 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.\n \n \n \n \n \n \n \n \n CTD\n \n \n \n \n CTD\n \n \n Conductivity-Temperature-Depth probe\n \n \n \n \n \n \n \n \n Niskin bottle\n \n \n \n \n Niskin bottle\n \n \n Device for obtaining samples of seawater at a specific depth\n\nWhy special entry for Niskin bottle but no entry for Nansen bottle?\n \n \n \n \n \n \n \n \n nutrient autoanalyzer\n \n \n \n \n nutrient autoanalyzer\n \n \n Laboratory Instrument\n\nNutrient Autoanalyzer is a generic term describing an automated flow-thru system used to conduct analyses of several different nutrients (nitrate, ammonium, orthophosphate, and silicate) simultaneously from a seawater sample.\n\nFor example:\nSEAL AutoAnalyzer 3 HR Continuous Segmented Flow Analyzer\n \n \n \n \n \n \n \n \n pH sensor\n \n \n \n \n pH sensor\n \n \n generic meter used to measure pH\n\nAny of a class of instruments used to quantify pH in a water or other type of sample.\n \n \n \n \n \n \n \n \n salinometer\n \n \n \n \n salinometer\n \n \n generic salinometer\n\nuse salinometer when the instrument type used is unclear but the data include salinity measurements\n \n \n \n \n \n \n \n \n temperature sensor\n \n \n \n \n temperature sensor\n \n \n A sensor used to measure temperature.\n \n \n \n \n \n \n \n \n titrator\n \n \n \n \n titrator\n \n \n titrator\n \n \n \n \n \n \n \n \n NOAA Ship Pisces\n \n \n \n \n Updated information from ICES for UNITED STATES platform PISCES:\nName : PISCES\nFlag : UNITED STATES - US (ISO Country Code)\nCall Sign : WTDL\nTitle : NOAA Ship\nPlatform Class : Research vessel\nIMO : 9349071\nPennant : R-226\nCommissioned Date : 2009-11-06\nCurrent Length : 63.8\nBuilt : 2007-12-06\nInformation Source : http://www.moc.noaa.gov/pc/index.html (URL)\nLloyds URL : http://www.seasearcher.com/lmiu/vessels/overview.htm?vesselID=366752\n\nOriginal NODC information:\nFlag: United States\nTitle: NOAA Ship R-226\nVessel Type: Fisheries Survey/Research\nDOB: 20071219\nCommissioned: 20091106\n\nSubmitted to ICES on 2010/09/08.\nConfirmed by NOAA on 22 Mar 2012.\n \n \n \n \n \n \n","sys_xmlmeta_obj":{"mimetype":"application/xml","hash":"-6049875703433213334:-5962806126982110096:169265","date":"2026-04-18T08:03:36.821Z","size":169265},"fileid":"gov.noaa.nodc:0309698","title":"Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12 (NCEI Accession 0309698)","description":"This data set consists of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry ultimately resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores, but also on species of commercial interest such as oysters or crabs. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the Ecosystem Monitoring Cruises (ECOMON) are utilized to collect water samples to measure water column inorganic carbon and hydrographic parameters including nutrients. Samples are collected at three depths (surface, mid-depth and near bottom) at select stations on a quarterly basis in the northeastern Atlantic continental shelf region off the United States. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic & Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH and total alkalinity concentrations. Additional samples are analyzed for nutrient concentrations at the University of Maine. These data are used to monitor short-long term coastal ocean acidification trends.","keywords_s":["0309698","AMMONIUM (NH4)","DEPTH - OBSERVATION","DISSOLVED INORGANIC CARBON (DIC)","DISSOLVED OXYGEN","nitrate + nitrite content (concentration)","pH","phosphate","SALINITY","silicate","total alkalinity","WATER DENSITY","WATER TEMPERATURE","carbon dioxide (CO2) gas analyzer","CTD","Niskin bottle","nutrient autoanalyzer","pH sensor","salinometer","temperature sensor","titrator","chemical","discrete sample","physical","profile","NOAA Ship Pisces","NOAA Atlantic Oceanographic and Meteorological Laboratory","NOAA Northeast Fisheries Science Center","University of Maine","NOAA Atlantic Oceanographic and Meteorological Laboratory","Ocean Carbon and Acidification Data System (OCADS)","US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)","East Coast - US/Canada","New York Bight","North Atlantic Ocean","oceanography","DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce","DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce","UMAINE > University of Maine","PC2406","334B20241027","Ocean Acidification Program (OAP)","Ocean Carbon and Acidification Data System (OCADS) Project","Coastal, OAP","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE","EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE","EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY","EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY","Discrete measurement","Profile","AMMONIA","CTDOXY","CTDOXYmg","CTDPRS","CTDSAL","CTDTMP","DIC","Depth_sampling","Depth_station","NITRIT+NITRAT","PHSPHT","SILCAT","Sigma-Theta","TAlk","pH","AUTOANALYZER > AUTOANALYZER","CO2 ANALYZERS > CO2 ANALYZERS","CTD > Conductivity, Temperature, Depth","NISKIN BOTTLES","PH METERS > PH METERS","SALINOMETERS","TEMPERATURE SENSORS > TEMPERATURE SENSORS","Ships","PISCES (call sign: WTDL, ICES code: 334B, 2009-)","OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN","New York Bight","North Atlantic Ocean","Northeast U.S. Shelf","environment","oceans"],"thumbnail_s":"https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0309698","contact_organizations_s":["NOAA National Centers for Environmental Information","NOAA National Centers for Environmental Information","NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)","NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)","NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)","Cooperative Institute for Satellite Earth System Studies (CISESS)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","University of Maine (UMO)","University of Maine (UMO)","Cooperative Institute for Satellite Earth System Studies (CISESS)","NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)","NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","University of Maine (UMO)","University of Maine (UMO)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","NOAA Northeast Fisheries Science Center (NMFS/NEFSC)","NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)","University of Maine (UMO)","NOAA National Centers for Environmental Information","Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)","Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)","Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)","Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)","Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)","NOAA National Centers for Environmental Information","NOAA National Centers for Environmental Information (NCEI)","NOAA National Centers for Environmental Information (NCEI)","NOAA National Centers for Environmental Information","NOAA National Centers for Environmental Information"],"contact_people_s":["Charles Featherstone","Rik Wanninkhof","Leticia Barbero","Donald Christopher Melrose","Denis Pierrot","Christopher C. Taylor","Paula S. Fratantoni","Harvey J. Walsh","David W. Townsend","Maura A. Thomas","Barbero, Leticia","Wanninkhof, Rik","Pierrot, Denis","Melrose, D. Christopher","Fratantoni, Paula S.","Walsh, Harvey J.","Townsend, David W.","Thomas, Maura A.","Taylor, Christopher C."],"project_metadata":["https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0309698.html"],"website.url":["https://www.ncei.noaa.gov/contact","https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0309698.html","https://doi.org/10.25921/18x1-ww47","https://www.ncei.noaa.gov/archive/accession/oas/309698"],"dataThemeseanames_s":["East Coast - US/Canada","New York Bight","North Atlantic Ocean"],"dataThemeprojects_s":["Ocean Carbon and Acidification Data System (OCADS)","US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)"],"dataThemeinstitutions_s":["NOAA Atlantic Oceanographic and Meteorological Laboratory","NOAA Northeast Fisheries Science Center","University of Maine","NOAA Atlantic Oceanographic and Meteorological Laboratory"],"platforms_s":["NOAA Ship Pisces"],"dataThemedatatypes_s":["AMMONIUM (NH4)","DEPTH - OBSERVATION","DISSOLVED INORGANIC CARBON (DIC)","DISSOLVED OXYGEN","nitrate + nitrite content (concentration)","pH","phosphate","SALINITY","silicate","total alkalinity","WATER DENSITY","WATER TEMPERATURE"],"dataThemeinstruments_s":["carbon dioxide (CO2) gas analyzer","CTD","Niskin bottle","nutrient autoanalyzer","pH sensor","salinometer","temperature sensor","titrator"],"dataThemeobservations_s":["chemical","discrete sample","physical","profile"],"people":["Charles Featherstone","Rik Wanninkhof","Leticia Barbero","Donald Christopher Melrose","Denis Pierrot","Christopher C. Taylor","David W. Townsend","Maura A. Thomas","Barbero, Leticia","Wanninkhof, Rik","Pierrot, Denis","Melrose, D. Christopher","Townsend, David W.","Thomas, Maura A.","Taylor, Christopher C."],"nccos_research_priorities_and_topics_s":["Ocean Acidification Program (OAP)","Coastal, OAP"],"supplementalInfo":"This data package (Submission ID: BJNXZLHN5) 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.","credit":"Funding Information: NOAA Ocean Acidification Program (Monitoring Carbonate Chemistry and Biological Indicators of Ocean Acidification on the Northeast Fisheries Science Center’s Ecosystems Monitoring (EcoMon) and Scallop Survey (HabCam) Cruises, 25143)","purpose":"To measure key carbon, physical and biogeochemical parameters in coastal waters of the US in relation to Ocean Acidification and monitor changes over time.","processStep":["NCEI Accession 0309698 v1.1 was published.","Parameter or Variable: Dissolved Inorganic Carbon;\nAbbreviation: DIC;\nUnit: micro-mol/kg;\nObservation type: Profile and Flow-Through;\nIn-situ / Manipulation / Response variable: IN-SITUOBSERVATION;\nMeasured or calculated: MEASURED;\nSampling instrument: Niskin bottle;\nAnalyzing instrument: Two systems consisting of a coulometer (UIC Inc.) coupled with a Dissolved Inorganic Carbon Extractor (DICE) inlet system. DICE was developed by Esa Peltola and Denis Pierrot of NOAA/AOML and Dana Greeley of NOAA/PMEL to modernize a carbon extractor called SOMMA (Johnson et al. 1985, 1987, 1993, and 1999; Johnson 1992);\nDetailed sampling and analyzing information: Samples for total dissolved inorganic carbon (DIC) measurements were drawn according to procedures outlined in the Guide to best practices for ocean CO2 measurements (Dickson et al., 2007) from Niskin bottles into cleaned 500-ml glass bottles. Bottles were rinsed and filled from the bottom, leaving 6 ml of headspace; care was taken not to entrain any bubbles. After 0.2 ml of saturated HgCl2 solution was added as a preservative, the sample bottles were sealed with glass stoppers lightly covered with Apiezon-L grease and were stored at room temperature to be sent back to the lab for analysis after the cruise. The analysis was done by coulometry with two analytical systems (AOML5 and AOML6) used simultaneously. In the coulometric analysis of DIC, all carbonate species are converted to CO2 (gas) by addition of excess hydrogen ion (acid) to the seawater sample, and the evolved CO2 gas is swept into the titration cell of the coulometer with pure air or compressed nitrogen, where it reacts quantitatively with a proprietary reagent based on ethanolamine to generate hydrogen ions. In this process, the solution changes from blue to colorless, triggering a current through the cell and causing coulometrical generation of OH minus ions at the anode. The OH ions react with the H+, and the solution turns blue again. A beam of light is shone through the solution, and a photometric detector at the opposite side of the cell senses the change in transmission. Once the percent transmission reaches its original value, the coulometric titration is stopped, and the amount of CO2 that enters the cell is determined by integrating the total charge during the titration. The volume of the pipette used to deliver the sample in each system was determined with aliquots of distilled water at known temperature. The weights with the appropriate densities were used to determine the volume of the pipette. Calculation of the amount of CO2 injected was according to the CO2 handbook (Dickson et al., 2007).The instrument has a salinity sensor, but all DIC values were recalculated to a molar weight (micro-mol/kg) using density obtained from the CTD salinity. The DIC values were corrected for dilution by 0.2 ml of saturated HgCl2 used for sample preservation (Measured DIC*1.00037). A correction was also applied for the offset from the CRM. This additive correction was applied for each cell using the CRM value obtained in the beginning of the cell. Please consult the accompanying Readme file for additional details.;\nReplicate information: 58 samples each 500-ml, 6 sets of duplicate samples.;\nStandardization description: The coulometers were calibrated by injecting aliquots of pure CO2 (99.99%) by means of an 8-port valve outfitted with two sample loops with known gas volumes bracketing the amount of CO2 extracted from the water samples for the two AOML systems.;\nStandardization frequency: The stability of each coulometer cell solution was confirmed three different ways: two sets of gas loops were measured at the beginning; also the Certified Reference Material (CRM), supplied by Dr. A. Dickson of UCSD, were measured at the beginning; and the duplicate samples at the beginning, middle, and end of each cell solution. The coulometer cell solution was replaced after 25 mg of carbon was titrated, typically after 9 to 12 hours of continuous use.;\nCRM manufacturer: Dr. A. Dickson of UCSD;\nCRM batch number: Batch 210;\nPreservation method: saturated HgCl2;\nPreservative volume: 0.2 ml;\nPreservative correction: The DIC values were corrected for dilution by 0.2 ml of saturated HgCl2 used for sample preservation. The total water volume of the sample bottles was 540 ml (calibrated by Esa Peltola, AOML). The correction factor used for dilution was 1.00037.;\nQuality 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.;\nMethod reference: Dickson, A.G., Sabine, C.L. and Christian, J.R. (Eds.) 2007. Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 191 pp. Johnson, K.M., Kortzinger, A.; Mintrop, L.; Duinker, J.C.; and Wallace, D.W.R. (1999). Coulometric total carbon dioxide analysis for marine studies: Measurement and internal consistency of underway surface TCO2 concentrations. Marine Chemistry 67:123 to 44.Johnson, K.M., Wills, K.D.; Butler, D.B.; Johnson, W.K.; and Wong, C.S. (1993). Coulometric total carbon dioxide analysis for marine studies: Maximizing the performance of an automated gas extraction.Johnson, K.M. (1992). Operator Manual: Single-Operator Multiparameter Metabolic Analyzer (SOMMA) for Total Carbon Dioxide (CT) with Coulometric Detection. Brookhaven National Laboratory, Brookhaven, N.Y. Johnson, K.M.; Williams, P.J.; Brandstrom, L.; and McN. Sieburth, J. (1987). Coulometric total carbon analysis for marine studies: Automation and calibration. Marine Chemistry 21:117 to 33.;\nResearcher name: Rik Wanninkhof;\nResearcher institution: NOAA Atlantic Oceanographic and Meteorological Laboratory","Parameter or Variable: Total alkalinity;\nAbbreviation: TAlk;\nUnit: micro-mol/kg;\nObservation type: Profile and Flow-Through;\nIn-situ / Manipulation / Response variable: IN-SITUOBSERVATION;\nMeasured or calculated: MEASURED;\nSampling instrument: Niskin bottle;\nAnalyzing instrument: Semi-automatic titration systems, System 1 consists of a Metrohm 765 Dosimat titrator, a pH meter (Orion 720A, ThermoScientific), a ROSS half cell pH glass electrode (Orion 9101BN, ThermoScientific) and a reference electrode (Orion 900200, ThermoScientific). System 2 consists of a Metrohm 665 Dosimat titrator, a pH meter (Orion 2 star pH Benchtop, ThermoScientific), a ROSS half cell pH glass electrode (Orion 9101BN, ThermoScientific) and a reference electrode (Orion 900200, ThermoScientific).;\nType of titration: Full Titration;\nCell type (open or closed): OPEN;\nCurve fitting method: Least-Square Analysis;\nDetailed sampling and analyzing information: All of the samples were run using leftover water from the same sample bottles used for DIC and pH. Please refer to DIC for detailed information on sampling and conservation of samples. For each measurement, approximately 200 ml of water sample were titrated with an HCl solution provided by Dr. Andrew Dickson of UCSD (0.25175 moles per kilogram-solution). Please consult the accompanying Readme file for additional details.;\nReplicate information: 58 samples each 500-ml, 6 sets of duplicate samples.;\nStandardization description: 2 CRM samples were run daily on each cell, before and after the seawater samples. The Total Alkalinity for the water samples was corrected using the daily averaged ratios between the certified and measured values of the 2 CRMs run on each cell. This TA titration system has a precision of 0.1 %. All the TA values were directly measured with reference to Certified Reference Material. The accuracy after correction is 0.1%. Please check attached pdf for more details.;\nStandardization frequency: All values were directly measured with reference to Certified Reference Material (Dickson, UCSD). 2 CRM samples were run daily on each cell.;\nCRM manufacturer: Dr. Andrew Dickson of UCSD;\nCRM batch number: CRM batch: 210;\nPreservation method: saturated HgCl2;\nPreservative volume: 0.2 ml;\nUncertainty: The precision of this method is better than 0.1% and accuracy is 0.1%.;\nQuality 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.;\nMethod reference: Millero, F. J., Zhang, J. Z., Lee, K., & Campbell, D. M. (1993). Titration alkalinity of seawater. Marine Chemistry, 44(2), 153-165.;\nResearcher name: Rik Wanninkhof;\nResearcher institution: NOAA Atlantic Oceanographic and Meteorological Laboratory","Parameter or Variable: pH;\nAbbreviation: pH;\npH scale: TOTALSCALE(T);\nObservation type: Profile and Flow-Through;\nIn-situ / Manipulation / Response variable: IN-SITUOBSERVATION;\nMeasured or calculated: MEASURED;\nSampling instrument: Niskin bottle;\nAnalyzing instrument: Agilent 8453 spectrometer setup with a custom-made temperature-controlled cell holder;\nDetailed sampling and analyzing information: The same sample bottle was used for pH, DIC and Talk analyses, with pH being analyzed first. The samples were fixed with HgCl2 (refer to DIC for more information on sampling and storage). Samples were thermostated at 20 (+/- 0.05) degrees Celsius in a water bath. Approximately 80 ml of sample were extracted from each DIC sample bottle by syringe before DIC analysis to determine the pH. Temperature for each sample was measured before analysis using a Hart Scientific Fluke 1523 reference thermometer. Absorbance blanks were taken for each sample and 10 micro liter of purified m-cresol purple (10 mmol kg-1) were added for the analysis. The equations of Liu et al, 2011 formulated using the purified m-cresol purple indicator were used to determine pH of the samples. pH samples were analyzed at 20C. Please check accompanying readme file for additional details.;\nReplicate information: 58 samples each 500-ml, 6 sets of duplicate samples.;\nStandardization description: The pH is calibration-free.;\nAt what temperature was pH reported: 20 and 25 degrees Celsius;\nUncertainty: Please check attached pdf for more details;\nQuality 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.;\nMethod reference: Liu, X.; Patsavas, M.C.; and Byrne, R. H. (2011). Purification and characterization of meta-cresol purple for spectrophotometric seawater pH measurements. Environmental Science and Technology, 45(11), 4862-4868. doi: 10.1021/es200665d;\nResearcher name: Rik Wanninkhof;\nResearcher institution: NOAA Atlantic Oceanographic and Meteorological Laboratory","Parameter or Variable: Depth of water at station;\nAbbreviation: Depth_station;\nUnit: meters;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: Surface underway and profile;\nMeasured or calculated: Measured or calculated;\nSampling instrument: Sounder or altimeter, models vary;\nDetailed sampling and analyzing information: Ship based sounder used when available. Depth from an altimeter on the CTD may also be used. Where neither of theses sources were available (typically due to water depth exceeding sounder's detection limit), depth may be estimated using the ETOPO1 bathymetry.;\nUncertainty: Uncertainty varies with source;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center","Parameter or Variable: Depth of water at sample collection;\nAbbreviation: Depth_sampling;\nUnit: meters;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SBE 911plus CTD;\nUncertainty: plus or minus 1 meter (data has also been vertically binaveraged to 1 decibar bins);\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center","Parameter or Variable: Water pressure;\nAbbreviation: CTDPRS;\nUnit: decibars;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SBE 911plus CTD;\nUncertainty: plus or minus decibar (data has also been vertically binaveraged to 1 decibar bins);\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center","Parameter or Variable: Water temperature;\nAbbreviation: CTDTMP;\nUnit: degrees celsius (ITS-90);\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SBE 911plus CTD;\nUncertainty: plus or minus 0.001 degrees celsius;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center","Parameter or Variable: Salinity;\nAbbreviation: CTDSAL;\nUnit: practical salinity scale of 1978;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Seasave 7, calculated from temperature and conductivity;\nSampling instrument: SBE 911plus CTD;\nDetailed sampling and analyzing information: CTD Salinity values were validated using water samples collected during profiles. Corrections were applied when needed.;\nUncertainty: plus or minus 0.01 PSS-78;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center","Parameter or Variable: Potential density at surface pressure;\nAbbreviation: Sigma-Theta;\nUnit: kilograms per cubic meter minus 1000;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Calculated;\nSampling instrument: SBE 911plus CTD;\nUncertainty: plus or minus 0.01 kilograms per cubic meter;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center","Parameter or Variable: Dissolved Oxygen;\nAbbreviation: CTDOXYmg;\nUnit: milligrams per liter;\nObservation type: Profile;\nMeasured or calculated: Measured;\nSampling instrument: SBE-43 dissolved oxygen sensor;\nUncertainty: plus or minus 2 percent of saturation;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center","Parameter or Variable: Dissolved Oxygen;\nAbbreviation: CTDOXY;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nMeasured or calculated: Measured;\nSampling instrument: SBE-43 dissolved oxygen sensor;\nUncertainty: plus or minus 2 percent of saturation;\nQuality flag convention: -999 indicates bad or missing data;\nResearcher name: Dr. Christopher Melrose;\nResearcher institution: NOAA Northeast Fisheries Science Center","Parameter or Variable: Silicic acid concentration;\nAbbreviation: SILCAT;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SeaBird 32 Carousel Water Sampler;\nAnalyzing instrument: The samples are analyzed using a Bran-Luebbe Autoanalyzer 3;\nDetailed sampling and analyzing information: Water samples collected during vertical CTD profiles, analysis of Samples performed by Maura Thomas, University of Maine;\nUncertainty: 0.22 micromolar detection limit;\nQuality flag convention: -999 indicates bad or missing data;\nMethod reference: Whitledge, T.E., D.M. Veidt, S.C. Mallow, C.J. Patton, C.D. Wirick. 1986. Automated nutrient analyses in seawater. Brookhaven National Laboratory, Publication BNL 38990, 177 p.;\nResearcher name: David Townsend and Maura Thomas;\nResearcher institution: University of Maine","Parameter or Variable: Nitrate and Nitrite total concentration;\nAbbreviation: NITRIT+NITRAT;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SeaBird 32 Carousel Water Sampler;\nAnalyzing instrument: The samples are analyzed using a Bran-Luebbe Autoanalyzer 3;\nDetailed sampling and analyzing information: Water samples collected during vertical CTD profiles, analysis of Samples performed by Maura Thomas, University of Maine;\nUncertainty: 0.12 micromolar detection limit;\nQuality flag convention: -999 indicates bad or missing data;\nMethod reference: Whitledge, T.E., D.M. Veidt, S.C. Mallow, C.J. Patton, C.D. Wirick. 1986. Automated nutrient analyses in seawater. Brookhaven National Laboratory, Publication BNL 38990, 177 p.;\nResearcher name: David Townsend and Maura Thomas;\nResearcher institution: University of Maine","Parameter or Variable: Ammonia concentration;\nAbbreviation: AMMONIA;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: SeaBird 32 Carousel Water Sampler;\nAnalyzing instrument: The samples are analyzed using a Bran-Luebbe Autoanalyzer 3;\nDetailed sampling and analyzing information: Water samples collected during vertical CTD profiles, analysis of Samples performed by Maura Thomas, University of Maine;\nUncertainty: 0.14 micromolar detection limit;\nQuality flag convention: -999 indicates bad or missing data;\nMethod reference: Whitledge, T.E., D.M. Veidt, S.C. Mallow, C.J. Patton, C.D. Wirick. 1986. Automated nutrient analyses in seawater. Brookhaven National Laboratory, Publication BNL 38990, 177 p.;\nResearcher name: David Townsend and Maura Thomas;\nResearcher institution: University of Maine","Parameter or Variable: Phosphate concentration;\nAbbreviation: PHSPHT;\nUnit: micromoles per kilogram;\nObservation type: Profile;\nIn-situ / Manipulation / Response variable: In-situ observation;\nMeasured or calculated: Measured;\nSampling instrument: The samples are analyzed using a Bran-Luebbe Autoanalyzer 3;\nReplicate information: 0.17 micromolar detection limit;\nUncertainty: -999 indicates bad or missing data;\nQuality flag convention: Whitledge, T.E., D.M. Veidt, S.C. Mallow, C.J. Patton, C.D. Wirick. 1986. Automated nutrient analyses in seawater. Brookhaven National Laboratory, Publication BNL 38990, 177 p.;\nResearcher name: David Townsend and Maura Thomas;\nResearcher institution: University of Maine"],"links_s":["https://www.ncei.noaa.gov/contact","https://www.ncei.noaa.gov/contact","https://www.aoml.noaa.gov/","https://www.aoml.noaa.gov/","https://www.aoml.noaa.gov/","https://cisess.umd.edu/","https://www.aoml.noaa.gov/","https://umaine.edu/","https://umaine.edu/","https://cisess.umd.edu/","https://www.aoml.noaa.gov/","https://www.aoml.noaa.gov/","https://umaine.edu/","https://umaine.edu/","https://www.aoml.noaa.gov/","https://umaine.edu/","https://www.ncei.noaa.gov/contact","https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system","https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/Bigelow.html","https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0309698.html","https://doi.org/10.25921/18x1-ww47","https://www.ncei.noaa.gov/archive/accession/oas/309698","https://www.ncei.noaa.gov/archive/accession/download/309698","ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0237/0309698/","https://www.ncei.noaa.gov/archive/accession/0309698/1.1"],"apiso_Identifier_s":"gov.noaa.nodc:0309698","apiso_Title_txt":"Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12 (NCEI Accession 0309698)","apiso_Abstract_txt":"This data set consists of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry ultimately resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores, but also on species of commercial interest such as oysters or crabs. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the Ecosystem Monitoring Cruises (ECOMON) are utilized to collect water samples to measure water column inorganic carbon and hydrographic parameters including nutrients. Samples are collected at three depths (surface, mid-depth and near bottom) at select stations on a quarterly basis in the northeastern Atlantic continental shelf region off the United States. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic & Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH and total alkalinity concentrations. Additional samples are analyzed for nutrient concentrations at the University of Maine. These data are used to monitor short-long term coastal ocean acidification trends.","apiso_BrowseGraphic_s":"https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0309698","apiso_OrganizationName_txt":"NOAA National Centers for Environmental Information","apiso_Subject_txt":["0309698","AMMONIUM (NH4)","DEPTH - OBSERVATION","DISSOLVED INORGANIC CARBON (DIC)","DISSOLVED OXYGEN","nitrate + nitrite content (concentration)","pH","phosphate","SALINITY","silicate","total alkalinity","WATER DENSITY","WATER TEMPERATURE","carbon dioxide (CO2) gas analyzer","CTD","Niskin bottle","nutrient autoanalyzer","pH sensor","salinometer","temperature sensor","titrator","chemical","discrete sample","physical","profile","NOAA Ship Pisces","NOAA Atlantic Oceanographic and Meteorological Laboratory","NOAA Northeast Fisheries Science Center","University of Maine","NOAA Atlantic Oceanographic and Meteorological Laboratory","Ocean Carbon and Acidification Data System (OCADS)","US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)","East Coast - US/Canada","New York Bight","North Atlantic Ocean","oceanography","DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce","DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce","UMAINE > University of Maine","PC2406","334B20241027","Ocean Acidification Program (OAP)","Ocean Carbon and Acidification Data System (OCADS) Project","Coastal, OAP","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE","EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE","EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE","EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY","EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY","Discrete measurement","Profile","AMMONIA","CTDOXY","CTDOXYmg","CTDPRS","CTDSAL","CTDTMP","DIC","Depth_sampling","Depth_station","NITRIT+NITRAT","PHSPHT","SILCAT","Sigma-Theta","TAlk","pH","AUTOANALYZER > AUTOANALYZER","CO2 ANALYZERS > CO2 ANALYZERS","CTD > Conductivity, Temperature, Depth","NISKIN BOTTLES","PH METERS > PH METERS","SALINOMETERS","TEMPERATURE SENSORS > TEMPERATURE SENSORS","Ships","PISCES (call sign: WTDL, ICES code: 334B, 2009-)","OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN","New York Bight","North Atlantic Ocean","Northeast U.S. Shelf","environment","oceans"],"apiso_TopicCategory_s":["environment","oceans"],"apiso_KeywordType_s":["theme","instrument","theme","platform","dataCentre","dataCentre","project","place","theme","dataCentre","project","project","project","project","theme","theme","theme","instrument","platform","platform","place","place"],"apiso_Type_s":"dataset","apiso_Modified_dt":"2026-04-03T08:17:43Z","apiso_CreationDate_dt":"2025-11-21T00:00:00Z","apiso_PublicationDate_dt":"2025-12-02T00:00:00Z","apiso_Language_s":"eng","apiso_ResourceLanguage_s":"eng","apiso_AccessConstraints_s":["accessLevel: Public"],"apiso_OtherConstraints_s":["Cite as: Barbero, Leticia; Wanninkhof, Rik; Pierrot, Denis; Melrose, D. Christopher; Fratantoni, Paula S.; Walsh, Harvey J.; Townsend, David W.; Thomas, Maura A.; Taylor, Christopher C. (2025). Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12 (NCEI Accession 0309698). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/18x1-ww47. Accessed [date].","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.","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)"],"apiso_HasSecurityConstraints_b":true,"envelope_geo":[{"type":"envelope","coordinates":[[-75.4683,41.1],[-68.3317,35.997]]}],"envelope_cen_pt":[{"lat":38.548500000000004,"lon":-71.9}],"timeperiod_nst":[{"begin_dt":"2024-10-27T00:00:00Z","begin_year_l":"2024","begin_indeterminate_s":null,"end_dt":"2024-11-12T23:59:59.999Z","end_year_l":"2024","end_indeterminate_s":null}],"metadata_year_l":[2024],"apiso_ConditionApplyingToAccessAndUse_txt":["Cite as: Barbero, Leticia; Wanninkhof, Rik; Pierrot, Denis; Melrose, D. Christopher; Fratantoni, Paula S.; Walsh, Harvey J.; Townsend, David W.; Thomas, Maura A.; Taylor, Christopher C. (2025). Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2406 (EXPOCODE 334B20241027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2024-10-27 to 2024-11-12 (NCEI Accession 0309698). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/18x1-ww47. Accessed [date].","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."],"apiso_ResponsiblePartyRole_txt":"pointOfContact","url_thumbnail_s":"https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0309698","url_website_s":"https://www.ncei.noaa.gov/contact","url_project_metadata_s":"https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0309698.html","url_http_download_s":"https://www.ncei.noaa.gov/archive/accession/download/309698","url_ftp_download_s":"ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0237/0309698/"}}