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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 WS20279 (EXPOCODE 33WA20201005) in the Southeast U.S. Shelf, Gulf of Mexico from 2020-10-05 to 2020-10-12 (NCEI Accession 0231693)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: October 04, 2025 | Last Modified: 2021-08-17T00:00:00.000+00:00
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 WS20279 (EXPOCODE 33WA20201005) in the Southeast U.S. Shelf, Gulf of Mexico from 2020-10-05 to 2020-10-12. 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.

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0231693 AMMONIA (NH3) DISSOLVED INORGANIC CARBON (DIC) nitrate + nitrite content (concentration) OXYGEN pH phosphate SALINITY silicate total alkalinity WATER TEMPERATURE carbon dioxide (CO2) gas analyzer CTD Niskin bottle oxygen sensor pH sensor salinometer 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 WS20279 33WA20201005 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 CO2 ANALYZERS > CO2 ANALYZERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES OXYGEN METERS > OXYGEN METERS PH METERS > PH METERS SALINOMETERS 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

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