Dataset Overview | National Centers for Environmental Information (NCEI)

Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during NOAA Ship Henry B. Bigelow cruises in the East Coast of the U.S. in 2023 (NCEI Accession 0288992)

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This data package contains data measured using an autonomous, automated total alkalinity titrator on board NOAA Ship Henry Bigelow. Data were collected from the ship's underway seawater supply during the seven hydrographic surveys, from May 8 to October 10, 2023. Spatial data coverage extends from the Gulf of Maine to Cape Hatteras. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's Atlantic Oceanographic and Meteorological Laboratory.

Dataset Citation

Cite as: Hunt, Christopher W.; Pierrot, Denis; Barbero, Leticia; Melrose, D. Christopher; Vandemark, Douglas; Wanninkhof, Rik (2024). Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during NOAA Ship Henry B. Bigelow cruises in the East Coast of the U.S. in 2023 (NCEI Accession 0288992). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/mcr6-bs68. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0288992

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Download Data	HTTPS (download) Navigate directly to the URL for data access and direct download. FTP (download) 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).
Distribution Formats	Originator data format
Ordering Instructions	Contact NCEI for other distribution options and instructions.
Distributor	NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov
Dataset Point of Contact	NOAA National Centers for Environmental Information ncei.info@noaa.gov

Time Period	2023-05-08 to 2023-10-10
Spatial Bounding Box Coordinates	West: -73.9693 East: -71.1881 South: 39.2973 North: 41.2439
Spatial Coverage Map

General Documentation

Project Metadata
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Descriptive Information
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Associated Resources

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
- https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
  OCADS website
AOML Coastal Cruises
- https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/Bigelow.html
  Related resource

Publication Dates	publication: 2024-02-16 creation: 2024-02-09
Data Presentation Form	Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status	Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility
Data Update Frequency	As needed
Supplemental Information	This data package (Submission ID: BHB8D1ZEE) 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.
Purpose	This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations	accessLevel: public 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.

Dataset Citation	Cite as: Hunt, Christopher W.; Pierrot, Denis; Barbero, Leticia; Melrose, D. Christopher; Vandemark, Douglas; Wanninkhof, Rik (2024). Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during NOAA Ship Henry B. Bigelow cruises in the East Coast of the U.S. in 2023 (NCEI Accession 0288992). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/mcr6-bs68. Accessed [date].
Cited Authors	Hunt, Christopher W. University of New Hampshire Pierrot, Denis NOAA Atlantic Oceanographic and Meteorological Laboratory Barbero, Leticia Rosenstiel School of Marine, Atmospheric, and Earth Science Cooperative Institute for Marine and Atmospheric Studies Melrose, D. Christopher NOAA NMFS Northeast Fisheries Science Center Vandemark, Douglas University of New Hampshire Wanninkhof, Rik NOAA Atlantic Oceanographic and Meteorological Laboratory
Principal Investigators	Christopher Hunt University of New Hampshire (UNH) Denis Pierrot NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) Leticia Barbero Rosenstiel School of Marine, Atmospheric, and Earth Science Cooperative Institute for Marine and Atmospheric Studies (CIMAS) Doug Vandemark University of New Hampshire (UNH) Rik Wanninkhof NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) Donald Christopher Melrose NOAA NMFS Northeast Fisheries Science Center
Contributors	NOAA Northeast Fisheries Science Center, Milford Laboratory (NMFS/NEFSC) University of New Hampshire (UNH) NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
Resource Providers	Christopher W. Hunt University of New Hampshire (UNH) University of New Hampshire (UNH)
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Funding Information: National Oceanic & Atmospheric Administration Ocean Acidification Program (OAP) (Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations)

Theme keywords	NODC DATA TYPES THESAURUS SALINITY total alkalinity WATER TEMPERATURE NODC OBSERVATION TYPES THESAURUS chemical physical surface underway WMO_CategoryCode oceanography Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY OCADS Study Type Discrete measurement Surface underway Provider Variable Abbreviations TA sss sst
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA Atlantic Oceanographic and Meteorological Laboratory NOAA Northeast Fisheries Science Center, Milford Laboratory University of New Hampshire NODC SUBMITTING INSTITUTION NAMES THESAURUS University of New Hampshire Global Change Master Directory (GCMD) Data Center Keywords 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
Platform keywords	NODC PLATFORM NAMES THESAURUS NOAA Ship Henry B. Bigelow Global Change Master Directory (GCMD) Platform Keywords Ships ICES/SeaDataNet Ship Codes HENRY B. BIGELOW (call sign: WTDF, ICES code: 33HH, 2005-)
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS temperature sensor thermosalinograph titrator Global Change Master Directory (GCMD) Instrument Keywords TEMPERATURE SENSORS > TEMPERATURE SENSORS THERMOSALINOGRAPHS
Place keywords	NODC SEA AREA NAMES THESAURUS East Coast - US/Canada Gulf of Maine North Atlantic Ocean Global Change Master Directory (GCMD) Location Keywords OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MAINE Provider Geographic Names Gulf of Maine North Atlantic Ocean U.S. East Coast
Project keywords	NODC PROJECT NAMES THESAURUS Ocean Carbon and Acidification Data System (OCADS) US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP) Cruise ID HB2101L1 HB2101L2 HB2101L3 HB2101L4 HB2101L5 EXPOCODE 33HH20230508 33HH20230609 33HH20230719 33HH20230808 33HH20231005 Ocean Acidification Search Keywords Ocean Carbon and Acidification Data System (OCADS) Project Reference Section ID Coastal, OAP
Keywords	NCEI ACCESSION NUMBER 0288992

Use Constraints	Cite as: Hunt, Christopher W.; Pierrot, Denis; Barbero, Leticia; Melrose, D. Christopher; Vandemark, Douglas; Wanninkhof, Rik (2024). Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during NOAA Ship Henry B. Bigelow cruises in the East Coast of the U.S. in 2023 (NCEI Accession 0288992). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/mcr6-bs68. Accessed [date].
Access Constraints	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.
Fees	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.

Lineage information for: dataset
Processing Steps	2024-02-16T01:19:21Z - NCEI Accession 0288992 v1.1 was published.
Output Datasets	NCEI Accession 0288992 v1.1 NCEI Accession 0288992 v1.1 (download) published 2024-02-16T01:19:21Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: micromoles per kilogram; Observation type: surface underway; Measured or calculated: Measured; Sampling instrument: CONTROS HydroFIA® TA; Analyzing instrument: CONTROS HydroFIA® TA; Type of titration: single acid addition; Detailed sampling and analyzing information: An inline filter (0.2 µm) with small 50 mL overflow reservoir for filtered seawater was supplied with the ship's underway 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. For more details regarding instrument deployment and performance, see Hunt et al. (2021, Marine Chemistry 232, 103960). CRM Batches 198 and 203 were used during these cruises.; CRM manufacturer: Dr. Andrew Dickson, Scripps Institute of Oceanography; CRM batch number: 198, 203; 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 Hunt, C. W., J. E. Salisbury, D. Vandemark, S. Aßmann, P. Fietzek, C. Melrose, R. Wanninkhof, and K. Azetsu-Scott. 2021. Variability of USA East Coast surface total alkalinity distributions revealed by automated instrument measurements. Marine Chemistry 232: 103960. doi:10.1016/j.marchem.2021.103960; Researcher name: Christopher W. Hunt; Researcher institution: Ocean Process Analysis Laboratory, University of New Hampshire Parameter or Variable: salinity; Abbreviation: sss; Unit: psu; Observation type: surface underway; Analyzing instrument: SBE-45; Detailed sampling and analyzing information: Salinity was measured from a continuous surface seawater supply (intake depth about 3 m) using a Seabird SBE-45 thermosalinograph (Sea-bird Electronics, Bellevue WA). The NOAA Oceanic and Atmospheric Research (OAR) office is acknowledged for financial support for underway TSG operations on the Bigelow, in particular the Global Ocean Monitoring and Observation Program (GOMO); fund reference no. 100007298) and the NOAA/OAR Ocean Acidification Program.; Uncertainty: accuracy 0.0003 S/m with a precision of 0.00001 S/m; Researcher name: Rik Wanninkhof; Researcher institution: NOAA AOML Parameter or Variable: seawater temperature; Abbreviation: sst; Unit: degrees Celcius; Observation type: surface underway; Analyzing instrument: SBE-45; Detailed sampling and analyzing information: Seawater temperature was measured from a continuous surface seawater supply (intake depth about 3 m) using a Seabird SBE-45 thermosalinograph (Sea-bird Electronics, Bellevue WA). The NOAA Oceanic and Atmospheric Research (OAR) office is acknowledged for financial support for underway TSG operations on the Bigelow, in particular the Global Ocean Monitoring and Observation Program (GOMO); fund reference no. 100007298) and the NOAA/OAR Ocean Acidification Program.; Uncertainty: accuracy 0.002 with a percision of 0.0001; Researcher name: Rik Wanninkhof; Researcher institution: NOAA AOML

Lineage information for: dataset

Processing Steps

Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: micromoles per kilogram; Observation type: surface underway; Measured or calculated: Measured; Sampling instrument: CONTROS HydroFIA® TA; Analyzing instrument: CONTROS HydroFIA® TA; Type of titration: single acid addition; Detailed sampling and analyzing information: An inline filter (0.2 µm) with small 50 mL overflow reservoir for filtered seawater was supplied with the ship's underway 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. For more details regarding instrument deployment and performance, see Hunt et al. (2021, Marine Chemistry 232, 103960). CRM Batches 198 and 203 were used during these cruises.; CRM manufacturer: Dr. Andrew Dickson, Scripps Institute of Oceanography; CRM batch number: 198, 203; 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 Hunt, C. W., J. E. Salisbury, D. Vandemark, S. Aßmann, P. Fietzek, C. Melrose, R. Wanninkhof, and K. Azetsu-Scott. 2021. Variability of USA East Coast surface total alkalinity distributions revealed by automated instrument measurements. Marine Chemistry 232: 103960. doi:10.1016/j.marchem.2021.103960; Researcher name: Christopher W. Hunt; Researcher institution: Ocean Process Analysis Laboratory, University of New Hampshire
Parameter or Variable: salinity; Abbreviation: sss; Unit: psu; Observation type: surface underway; Analyzing instrument: SBE-45; Detailed sampling and analyzing information: Salinity was measured from a continuous surface seawater supply (intake depth about 3 m) using a Seabird SBE-45 thermosalinograph (Sea-bird Electronics, Bellevue WA). The NOAA Oceanic and Atmospheric Research (OAR) office is acknowledged for financial support for underway TSG operations on the Bigelow, in particular the Global Ocean Monitoring and Observation Program (GOMO); fund reference no. 100007298) and the NOAA/OAR Ocean Acidification Program.; Uncertainty: accuracy 0.0003 S/m with a precision of 0.00001 S/m; Researcher name: Rik Wanninkhof; Researcher institution: NOAA AOML
Parameter or Variable: seawater temperature; Abbreviation: sst; Unit: degrees Celcius; Observation type: surface underway; Analyzing instrument: SBE-45; Detailed sampling and analyzing information: Seawater temperature was measured from a continuous surface seawater supply (intake depth about 3 m) using a Seabird SBE-45 thermosalinograph (Sea-bird Electronics, Bellevue WA). The NOAA Oceanic and Atmospheric Research (OAR) office is acknowledged for financial support for underway TSG operations on the Bigelow, in particular the Global Ocean Monitoring and Observation Program (GOMO); fund reference no. 100007298) and the NOAA/OAR Ocean Acidification Program.; Uncertainty: accuracy 0.002 with a percision of 0.0001; Researcher name: Rik Wanninkhof; Researcher institution: NOAA AOML

Acquisition Information (collection)
Instrument	temperature sensor thermosalinograph titrator
Platform	NOAA Ship Henry B. Bigelow

Last Modified: 2026-08-19T13:21:32Z
For questions about the information on this page, please email: ncei.info@noaa.gov

Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during NOAA Ship Henry B. Bigelow cruises in the East Coast of the U.S. in 2023 (NCEI Accession 0288992)

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