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National Coral Reef Monitoring Program: Dissolved inorganic carbon, total alkalinity, pH and other variables collected from surface discrete measurements using Coulometer, alkalinity titrator and other instruments from the Florida Keys, Dry Tortugas, Flower Garden Banks and Southeast Florida, from 2024-01-02 to 2024-12-26 (NCEI Accession 0308300)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 27, 2026 at 09:40 PM | Dataset Last Updated: September 30, 2025 at 12:00 AM
This dataset contains carbonate chemistry data collected at both random locations and existing long-term sites in the Florida Keys, Dry Tortugas, Flower Garden Banks and Southeast Florida as part of the NOAA National Coral Reef Monitoring Program (NCRMP). These data are collected and analyzed to assess spatial and temporal variation in the seawater carbonate systems of coral reef ecosystems and include two types of sampling methods. The first method is collected by hand or niskin at the surface, either from the boat or by SCUBA divers. The second method uses subsurface autosamplers where water samples provided in this dataset were collected at a depth of approximately 15m. Samples are either collected singularly or as part of a diurnal set. The samples are processed by the Atlantic Oceanographic Meteorological Laboratory (AOML) where they are analyzed for total alkalinity (TA), dissolved inorganic carbon (DIC) and Spectrophotometric pH. Using the analyzed TA and DIC, alongside temperature, salinity and depth data, AOML staff calculated other important carbonate chemistry system parameters such as pH, pCO2, and aragonite saturation and reported the results in this dataset.

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  • https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system

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  • https://coralreef.noaa.gov/topics/national-coral-reef-monitoring-program

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  • GCMD Keyword Forum Page

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0308300 ARAGONITE SATURATION STATE DEPTH - OBSERVATION DISSOLVED INORGANIC CARBON (DIC) partial pressure of carbon dioxide - water pH SALINITY total alkalinity

Complete Metadata
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description This dataset contains carbonate chemistry data collected at both random locations and existing long-term sites in the Florida Keys, Dry Tortugas, Flower Garden Banks and Southeast Florida as part of the NOAA National Coral Reef Monitoring Program (NCRMP). These data are collected and analyzed to assess spatial and temporal variation in the seawater carbonate systems of coral reef ecosystems and include two types of sampling methods. The first method is collected by hand or niskin at the surface, either from the boat or by SCUBA divers. The second method uses subsurface autosamplers where water samples provided in this dataset were collected at a depth of approximately 15m. Samples are either collected singularly or as part of a diurnal set. The samples are processed by the Atlantic Oceanographic Meteorological Laboratory (AOML) where they are analyzed for total alkalinity (TA), dissolved inorganic carbon (DIC) and Spectrophotometric pH. Using the analyzed TA and DIC, alongside temperature, salinity and depth data, AOML staff calculated other important carbonate chemistry system parameters such as pH, pCO2, and aragonite saturation and reported the results in this dataset.
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0308300.xml
issued 2025-09-26T00:00:00.000+00:00
keyword 
[
  "0308300",
  "ARAGONITE SATURATION STATE",
  "DEPTH - OBSERVATION",
  "DISSOLVED INORGANIC CARBON (DIC)",
  "partial pressure of carbon dioxide - water",
  "pH",
  "SALINITY",
  "total alkalinity",
  "WATER TEMPERATURE",
  "carbon dioxide (CO2) gas analyzer",
  "CTD",
  "Niskin bottle",
  "pH sensor",
  "salinometer",
  "temperature sensor",
  "titrator",
  "chemical",
  "physical",
  "surface underway",
  "R/V F.G. Walton Smith",
  "NOAA Atlantic Oceanographic and Meteorological Laboratory",
  "NOAA Atlantic Oceanographic and Meteorological Laboratory",
  "CORAL REEF STUDIES",
  "National Coral Reef Monitoring Program (NCRMP)",
  "Ocean Carbon and Acidification Data System (OCADS)",
  "US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)",
  "Coastal Waters of Florida",
  "Gulf of America",
  "Gulf of Mexico",
  "North Atlantic Ocean",
  "oceanography",
  "DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce",
  "Cpastal",
  "Ocean Acidification Program (OAP)",
  "Ocean Carbon and Acidification Data System (OCADS) Project",
  "National Coral Reef Monitoring Program (NCRMP)",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBONATE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
  "Discrete measurement",
  "Surface discrete",
  "Aragonite_Sat_W",
  "DIC_umol/kg",
  "Salinity_Bottle",
  "Sample_Depth_m",
  "TA_umol/kg",
  "Temperature_C",
  "pCO2_uatm",
  "pH_calculated",
  "pH_measured",
  "CO2 ANALYZERS > CO2 ANALYZERS",
  "CTD > Conductivity, Temperature, Depth",
  "NISKIN BOTTLES",
  "PH METERS > PH METERS",
  "SALINOMETERS",
  "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",
  "Dry Tortugas",
  "Florida Keys",
  "Flower Garden Banks",
  "Southeast Florida"
]
landingPage https://www.ncei.noaa.gov/contact
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2025-09-30T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
references 
[
  "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system",
  "https://coralreef.noaa.gov/topics/national-coral-reef-monitoring-program",
  "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0306674.html",
  "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0302039.html",
  "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0290602.html",
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]
rights otherRestrictions
spatial -79.996114,24.33917,-93.821567,27.9218
temporal 2024-01-02T00:00:00+00:00/2024-12-26T00:00:00+00:00
theme 
[
  "geospatial"
]
title National Coral Reef Monitoring Program: Dissolved inorganic carbon, total alkalinity, pH and other variables collected from surface discrete measurements using Coulometer, alkalinity titrator and other instruments from the Florida Keys, Dry Tortugas, Flower Garden Banks and Southeast Florida, from 2024-01-02 to 2024-12-26 (NCEI Accession 0308300)

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