Skip to main content
U.S. flag

An official website of the United States government

Dissolved inorganic carbon, total alkalinity, pH on total scale, and other variables collected from discrete samples and profile observations during the R/V F. G. Walton Smith cruise WS20342 (EXPOCODE 33WA20201207) in the Southeast U.S. Shelf, Gulf of Mexico from 2020-12-07 to 2020-12-12 (NCEI Accession 0231726)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: May 06, 2026 at 02:45 AM | Dataset Last Updated: February 11, 2022 at 12:00 AM
This dataset contains the discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH on total scale, ammonia, water temperature, salinity, dissolved oxygen and nutrients during the R/V F. G. Walton Smith cruise WS20342 (EXPOCODE 33WA20201207) in the Southeast U.S. Shelf, Gulf of Mexico from 2020-12-07 to 2020-12-12. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry resulting in a reduction in pH, a process termed ocean acidification. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the South Florida Project Cruises (SFP) are utilized to collect water samples to measure surface water inorganic carbon and hydrographic parameters including nutrients. Samples are collected from 34 stations on a bi-monthly basis to monitor the outflow of the Shark River Slough (SRS) and red tide in the southwestern Gulf of Mexico. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic and Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH, total alkalinity and nutrient concentrations. These data are used to observe the effects of the SRS on acidification in the coastal ocean.

Resources

9 resources available

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

0231726 AMMONIA (NH3) DISSOLVED INORGANIC CARBON (DIC) DISSOLVED OXYGEN nitrate + nitrite content (concentration) pH phosphate SALINITY

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
                                            {
  "fn": "NOAA National Centers for Environmental Information",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:ncei.info@noaa.gov"
}
describedByType application/octet-steam
description This dataset contains the discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH on total scale, ammonia, water temperature, salinity, dissolved oxygen and nutrients during the R/V F. G. Walton Smith cruise WS20342 (EXPOCODE 33WA20201207) in the Southeast U.S. Shelf, Gulf of Mexico from 2020-12-07 to 2020-12-12. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry resulting in a reduction in pH, a process termed ocean acidification. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the South Florida Project Cruises (SFP) are utilized to collect water samples to measure surface water inorganic carbon and hydrographic parameters including nutrients. Samples are collected from 34 stations on a bi-monthly basis to monitor the outflow of the Shark River Slough (SRS) and red tide in the southwestern Gulf of Mexico. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic and Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH, total alkalinity and nutrient concentrations. These data are used to observe the effects of the SRS on acidification in the coastal ocean.
distribution 
                                            [
  {
    "@type": "dcat:Distribution",
    "title": "Project Metadata",
    "accessURL": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0231726.html",
    "mediaType": "text/html",
    "description": "Navigate directly to the URL for a descriptive web page with download links.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Dataset Landing Page",
    "accessURL": "https://doi.org/10.25921/aqtj-jy03",
    "mediaType": "text/html",
    "description": "Navigate directly to the URL for a descriptive web page with download links.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Descriptive Information",
    "accessURL": "https://www.ncei.noaa.gov/archive/accession/oas/231726",
    "mediaType": "text/html",
    "description": "Navigate directly to the URL for a descriptive web page with download links.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "HTTPS",
    "accessURL": "https://www.ncei.noaa.gov/archive/accession/download/231726",
    "mediaType": "text/html",
    "description": "Navigate directly to the URL for data access and direct download.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "FTP",
    "accessURL": "ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0176/0231726/",
    "mediaType": "text/html",
    "description": "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).",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/Walton_Smith.html",
    "accessURL": "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/Walton_Smith.html",
    "mediaType": "text/html",
    "description": "Related resource",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system",
    "accessURL": "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system",
    "mediaType": "text/html",
    "description": "OCADS website",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GCMD Keyword Forum Page",
    "accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
    "mediaType": "text/html",
    "description": "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",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Contact Information",
    "accessURL": "https://www.ncei.noaa.gov/contact",
    "mediaType": "text/html",
    "description": "Information for contacts at NCEI.",
    "describedByType": "application/octet-stream"
  }
]
identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0231726.xml
issued 2021-04-27T00:00:00.000+00:00
keyword 
                                            [
  "0231726",
  "AMMONIA (NH3)",
  "DISSOLVED INORGANIC CARBON (DIC)",
  "DISSOLVED OXYGEN",
  "nitrate + nitrite content (concentration)",
  "pH",
  "phosphate",
  "SALINITY",
  "silicate",
  "total alkalinity",
  "WATER TEMPERATURE",
  "carbon dioxide (CO2) gas analyzer",
  "CTD",
  "Niskin bottle",
  "nutrient autoanalyzer",
  "oxygen sensor",
  "pH sensor",
  "temperature sensor",
  "titrator",
  "chemical",
  "discrete sample",
  "physical",
  "profile",
  "R/V F.G. Walton Smith",
  "NOAA Atlantic Oceanographic and Meteorological Laboratory",
  "NOAA Atlantic Oceanographic and Meteorological Laboratory",
  "US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)",
  "Gulf of Mexico",
  "North Atlantic Ocean",
  "oceanography",
  "DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce",
  "WS20342",
  "33WA20201207",
  "Ocean Acidification Program (OAP)",
  "Ocean Carbon and Acidification Data System (OCADS) Project",
  "Coastal",
  "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 > SALINITY",
  "Discrete measurement",
  "Profile",
  "AMMONIA",
  "CHL and PHAE",
  "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",
  "OXYGEN METERS > OXYGEN METERS",
  "PH METERS > PH METERS",
  "TEMPERATURE SENSORS > TEMPERATURE SENSORS",
  "F. G. Walton Smith (call sign: WCZ6292, ICES code: 33WA, 1999-)",
  "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN",
  "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA",
  "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO",
  "North Atlantic Ocean",
  "Southwest Gulf of Mexico"
]
landingPage https://www.ncei.noaa.gov/contact
language 
                                            []
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2022-02-11T00:00:00.000+00:00
publisher 
                                            {
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
references 
                                            [
  "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/Walton_Smith.html",
  "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system"
]
rights otherRestrictions
spatial -80.54714,24.65271,-83.50279,27.80127
temporal 2020-12-07T00:00:00+00:00/2020-12-12T00:00:00+00:00
title Dissolved inorganic carbon, total alkalinity, pH on total scale, and other variables collected from discrete samples and profile observations during the R/V F. G. Walton Smith cruise WS20342 (EXPOCODE 33WA20201207) in the Southeast U.S. Shelf, Gulf of Mexico from 2020-12-07 to 2020-12-12 (NCEI Accession 0231726)

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov