gov.noaa.nodc:0245461 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 2026-07-28T13:34:17Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Time series surface total alkalinity, water temperature and salinity measured using an autonomous, automated total alkalinity titrator installed at the University of New Hampshire's Coastal Marine Laboratory (CML) in the Great Bay estuary along the New Hampshire coast from 2016-05 to 2019-11 (NCEI Accession 0245461) 2022-01-14 publication 2022-01-11 creation International DOI Foundation (IDF) 10.25921/e14t-1r74 NOAA National Centers for Environmental Information gov.noaa.nodc:0245461 NCEI Archive Management System 0245461 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 Christopher W. Hunt University of New Hampshire (UNH) chunt@unh.edu resourceProvider University of New Hampshire (UNH) resourceProvider Christopher Hunt University of New Hampshire (UNH) chunt@unh.edu principalInvestigator Joseph Salisbury University of New Hampshire (UNH) Joe.Salisbury@unh.edu principalInvestigator Douglas Vandemark University of New Hampshire (UNH) doug.vandemark@unh.edu principalInvestigator Hunt, Christopher W. University of New Hampshire author Salisbury, Joseph E. University of New Hampshire author Vandemark, Douglas University of New Hampshire doug.vandemark@unh.edu author University of New Hampshire (UNH) contributor tableDigital This dataset contains data measured using an autonomous, automated total alkalinity titrator installed at the University of New Hampshire's Coastal Marine Laboratory (CML). The CML is located at the outlet of the Great Bay estuary along the New Hampshire coast. Hourly data were measured from the lab's continuous seawater supply, located approximately one meter off the bottom. In addition to total alkalinity, salinity and water temperature data are included. Temporal data coverage runs from May 2016 to November 2019, although there are substantial data gaps, in particular from April 2018 until March 2019 due to a fire and subsequent repairs to the CML building. This effort was part of the NOAA Ocean Acidification Program (OAP) and Ocean Technology Transfer Project grant entitled "Tracking Ocean Alkalinity using New Carbon Measurement Technologies (TAACT)". Measurements of pCO2 at the CML site are available from the Northeastern Regional Association of Coastal Ocean Observing Systems: www.http://neracoos.org/datatools This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Information: National Oceanic and Atmospheric Administration Ocean Acidification Program (OAP) and Ocean Technology Transfer Project (“Tracking Ocean Alkalinity Using New Carbon Measurement Technologies (TAACT)”, NA15NOS0120155) 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:0245461 Preview graphic PNG 0245461 NCEI ACCESSION NUMBER 2020-07-29 publication SALINITY total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS salinometer temperature sensor titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical physical surface measurements time series theme NODC OBSERVATION TYPES THESAURUS UNKNOWN PLATFORMS OF USSR platform NODC PLATFORM NAMES THESAURUS University of New Hampshire dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS University of New Hampshire dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP) project NODC PROJECT NAMES THESAURUS Gulf of Maine North Atlantic Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY 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 Surface measurement Time series theme OCADS Study Type Time series theme Provider Keywords SSS SST TAlk theme Provider Variable Abbreviations SALINOMETERS TEMPERATURE SENSORS > TEMPERATURE SENSORS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Ships platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MAINE place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Gulf of Maine North Atlantic Ocean place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Hunt, Christopher W.; Salisbury, Joseph E.; Vandemark, Douglas (2022). Time series surface total alkalinity, water temperature and salinity measured using an autonomous, automated total alkalinity titrator installed at the University of New Hampshire's Coastal Marine Laboratory (CML) in the Great Bay estuary along the New Hampshire coast from 2016-05 to 2019-11 (NCEI Accession 0245461). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/e14t-1r74. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. Global Coastal Program Data: North America East Coast 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/north_america_east.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/north_america_east.html Related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital crossReference project NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system 2022-04 publication https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system HTTPS https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system OCADS website information NOAA National Centers for Environmental Information author NOAA National Centers for Environmental Information (NCEI) publisher documentDigital [accessed 2024-02-08] crossReference program eng; USA utf8 environment oceans -70.7 -70.7 43.07 43.07 2016-05-16 2019-11-18 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Originator data format 0.816 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0245461.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/e14t-1r74 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/245461 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/245461 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0194/0245461/ 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 0245461 v1.1 was published. 2022-01-14T22:21:11Z NCEI Accession 0245461 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0245461/1.1 HTTPS NCEI Accession 0245461 v1.1 published 2022-01-14T22:21:11Z download dataset Parameter or Variable: Total alkalinity; Abbreviation: TAlk; Unit: micro-mol/kg; Observation type: time series, flow through; In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: Flow through system; Analyzing instrument: CONTROS HydroFIA® TA; Type of titration: single acid addition; Cell type (open or closed): closed (with CO2 removal via chemical absorption); Detailed sampling and analyzing information: An inline filter (0.2 µm) with small 50 mL overflow reservoir for filtered seawater was supplied with the continuous seawater supply. The HydroFIA TA then drew the sample from the reservoir into the instrument for analysis. The HydroFIA TA instrument performed a single-point titration of seawater with 0.1N hydrochloric acid (HCl), using bromocresol green (BCG) as the indicator for spectrophotometric pH detection; Replicate information: 2.0 µmol/kg, calculated as one standard deviation of triplicate measurements of certified reference material; Standardization description: The instrument was calibrated using certified reference material (CRM) obtained from Dr. Andrew Dickson at Scripps Institution of Oceanography. The instrument was calibrated before each cruise, and periodic CRM measurements were made during each cruise. These CRM measurements were used to correct the underway sample data. For more details, see Hunt et al. (2020, in review). CRM Batches 124, 125, 151, 156, 159, 162, 163, 164, 172, 173 and 178 were used during this data collection period.; CRM manufacturer: Dr. Andrew Dickson, Scripps Institute of Oceanography; CRM batch number: CRM batch: 124, 125, 151, 156, 159, 162, 163, 164, 172, 173 and 178; Preservation method: none; Preservative volume: none; Preservative correction: none; Uncertainty: 2.3±13; Method reference: Aßmann, S., Frank, C., Petersen, W., Körtzinger, A., 2013. Autonomous pH and alkalinity sensors for the characterization of the carbonate system in coastal areas. Presented at the EGU General Assembly Conference Abstracts, pp. EGU2013-8760. Seelmann, K., Aßmann, S., Körtzinger, A., 2019. Characterization of a novel autonomous analyzer for seawater total alkalinity: Results from laboratory and field tests. Limnology and Oceanography: Methods 17, 515-532. https://doi.org/10.1002/lom3.10329; Researcher name: Christopher W. Hunt; Researcher institution: Ocean Process Analysis Laboratory, University of New Hampshire Parameter or Variable: Water temperature; Abbreviation: SST; Unit: degrees celsius (ITS-90); Controlled vocabulary name: Water temperature; Observation type: Flow-through; In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: Flow-through; Analyzing instrument: Aanderaa 3919; Detailed sampling and analyzing information: Water temperature was measured from a continuous seawater supply using an Aanderaa 3919 thermosalinograph (Aaneraa Data Instruments, Bergen Norway).; Uncertainty: accuracy 0.1 degrees Celcius with a precision of 0.01 degrees Celcius; Researcher name: Joseph Salisbury; Researcher institution: University of New Hampshire Parameter or Variable: Salinity; Abbreviation: SSS; Unit: practical salinity scale of 1978; Observation type: Flow-through; In-situ / Manipulation / Response variable: in-situ observation; Sampling instrument: Aanderaa 3919; Detailed sampling and analyzing information: Salinity was measured from a continuous seawater supply using an Aanderaa 3919 thermosalinograph (Aaneraa Data Instruments, Bergen Norway).; Uncertainty: accuracy 0.005 S/m with a precision of 0.0002 S/m; Researcher name: Joseph Salisbury; Researcher institution: University of New Hampshire asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian salinometer salinometer generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements temperature sensor temperature sensor A sensor used to measure temperature. titrator titrator titrator UNKNOWN PLATFORMS OF USSR UNKNOWN PLATFORMS OF USSR