Dissolved inorganic carbon (DIC), total alkalinity (TA), pH on total scale, dissolved organic carbon (DOC), chlorofluorocarbons (CFC11, CFC12), water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Roger Revelle cruise on GO-SHIP repeat section I05 (EXPOCODE 33RR20230722) in the Indian Ocean, Southern Ocean from 2023-07-22 to 2023-09-14 (NCEI Accession 0308399)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 29, 2026 | Last Modified: 2025-10-17T00:00:00.000+00:00

This dataset includes discrete profile measurements of Dissolved inorganic carbon (DIC), total alkalinity (TA), pH on total scale, dissolved organic carbon (DOC), chlorofluorocarbons (CFC11, CFC12), water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Roger Revelle cruise on GO-SHIP repeat section I05 (EXPOCODE 33RR20230722) in the Indian Ocean, Southern Ocean from 2023-07-22 to 2023-09-14. GO-SHIP repeat transoceanic surveys (www.goship.org) provide full water column hydrographic observations with temporal and spatial resolutions adequate to resolve decadal variability in oceanic storage of heat, freshwater, carbon, oxygen, nutrients and transient tracers. Repeat hydrographic physical-biogeochemical measurements nominally in Indian Ocean enables scientists to better tackle important unresolved aspects of the Indian and Southern Ocean's response to decadal scale variability and increases in both heat and carbon dioxide as a result of anthropogenic activities. The I05 2023 cruise aboard the UNOLS vessel R/V Roger Revelle was undertaken as part of the US GO-SHIP (Global Ocean Ship-based Hydrographic Investigations Program), a major contributor to international GO-SHIP. The program’s overall objective is to collect quasi-decadal, highly accurate, surface-to-bottom, coast-to-coast, physical, and chemical oceanic observations. These measurements are essential to monitoring long-term changes in heat, freshwater, carbon, oxygen, and other tracers in the global ocean, the main reservoir in the Earth System.

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description	This dataset includes discrete profile measurements of Dissolved inorganic carbon (DIC), total alkalinity (TA), pH on total scale, dissolved organic carbon (DOC), chlorofluorocarbons (CFC11, CFC12), water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Roger Revelle cruise on GO-SHIP repeat section I05 (EXPOCODE 33RR20230722) in the Indian Ocean, Southern Ocean from 2023-07-22 to 2023-09-14. GO-SHIP repeat transoceanic surveys (www.goship.org) provide full water column hydrographic observations with temporal and spatial resolutions adequate to resolve decadal variability in oceanic storage of heat, freshwater, carbon, oxygen, nutrients and transient tracers. Repeat hydrographic physical-biogeochemical measurements nominally in Indian Ocean enables scientists to better tackle important unresolved aspects of the Indian and Southern Ocean's response to decadal scale variability and increases in both heat and carbon dioxide as a result of anthropogenic activities. The I05 2023 cruise aboard the UNOLS vessel R/V Roger Revelle was undertaken as part of the US GO-SHIP (Global Ocean Ship-based Hydrographic Investigations Program), a major contributor to international GO-SHIP. The program’s overall objective is to collect quasi-decadal, highly accurate, surface-to-bottom, coast-to-coast, physical, and chemical oceanic observations. These measurements are essential to monitoring long-term changes in heat, freshwater, carbon, oxygen, and other tracers in the global ocean, the main reservoir in the Earth System.
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identifier	gov.noaa.nodc:0308399
issued	2025-09-30T00:00:00.000+00:00
keyword	[ "0308399", "CHLOROFLUOROCARBON-11 (CFC-11)", "CHLOROFLUOROCARBON-12 (CFC-12)", "DISSOLVED INORGANIC CARBON (DIC)", "DISSOLVED ORGANIC CARBON", "DISSOLVED OXYGEN", "NITRATE", "NITRITE", "pH", "phosphate", "SALINITY", "silicate", "sulfur hexafluoride (SF6)", "total alkalinity", "WATER TEMPERATURE", "carbon dioxide (CO2) gas analyzer", "CTD", "Niskin bottle", "nutrient autoanalyzer", "oxygen sensor", "pH sensor", "salinometer", "temperature sensor", "titrator", "chemical", "discrete sample", "physical", "profile", "R/V Roger Revelle", "NOAA Atlantic Oceanographic and Meteorological Laboratory", "NOAA Pacific Marine Environmental Laboratory", "Scripps Institution of Oceanography", "University of Alaska Fairbanks", "University of California, Santa Barbara", "University of Washington", "Scripps Institution of Oceanography", "GLOBAL OCEAN DATA ANALYSIS PROJECT (GLODAP)", "The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP)", "Indian Ocean", "oceanography", "DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce", "DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce", "RR2308", "33RR20230722", "GLODAP > Global Ocean Data Analysis Project", "Ocean Carbon and Acidification Data System (OCADS) Project", "GO-SHIP I05", "The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP)", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON", "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", "ALKALI", "CFC11, CFC12, CFC113", "CTDSAL", "CTDTMP", "DOC", "OXYGEN", "PH_TOT", "SILCAT, NITRAT, NITRIT, PHSPHT", "TCARBN", "AUTOANALYZER > AUTOANALYZER", "CO2 ANALYZERS > CO2 ANALYZERS", "CTD > Conductivity, Temperature, Depth", "NISKIN BOTTLES", "OXYGEN METERS > OXYGEN METERS", "PH METERS > PH METERS", "SALINOMETERS", "TEMPERATURE SENSORS > TEMPERATURE SENSORS", "Ships", "ROGER REVELLE (call sign: KAOU, ICES code: 33RR, 1996-)", "OCEAN > INDIAN OCEAN", "Indian Ocean" ]
landingPage	https://www.ncei.noaa.gov/contact
language	[]
license	https://creativecommons.org/publicdomain/zero/1.0/
modified	2025-10-17T00:00:00.000+00:00
publisher	{ "name": "NOAA National Centers for Environmental Information", "@type": "org:Organization" }
references	[ "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0287338.html", "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_i05.html", "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0304490.html", "https://cchdo.ucsd.edu/cruise/33RR20230722", "https://cchdo.ucsd.edu/data/41036/33RR20230722_do.pdf", "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/", "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system" ]
rights	otherRestrictions
spatial	114.976,-35.6,30.339,-30.381
temporal	2023-07-22T00:00:00+00:00/2023-09-14T00:00:00+00:00
title	Dissolved inorganic carbon (DIC), total alkalinity (TA), pH on total scale, dissolved organic carbon (DOC), chlorofluorocarbons (CFC11, CFC12), water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Roger Revelle cruise on GO-SHIP repeat section I05 (EXPOCODE 33RR20230722) in the Indian Ocean, Southern Ocean from 2023-07-22 to 2023-09-14 (NCEI Accession 0308399)