Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity and other variables collected from discrete sample and profile observations during R/V Marion Dufresne OISO-21 cruise (EXPOCODE 35MF20120125) in the South Indian Ocean and the corresponding Southern Ocean sector from 2012-01-25 to 2012-03-07 (NCEI Accession 0290760)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: May 29, 2026 at 08:23 PM | Dataset Last Updated: April 03, 2024 at 12:00 AM

This dataset is part of the long-term monitoring program OISO (Ocean Indien Service d'Observations) initiated in 1998, and covering contrasting regions in the South-West Indian Ocean from the subtropics to the Antarctic zone. It includes hydrological and biogeochemical measurements (temperature, salinity, oxygen, total CO2, alkalinity, nutrients, chlorophyll-a, d13C and d18O) collected in the water column (17 stations) using a rosette-CTD equipped with 24 Niskin bottles. Most of the samples were collected from the surface down to 1200m, except for 2 deep stations (down to the bottom at 30°S and 56.5°S). During the OISO-21 cruise we also collected underway fCO2 data (NCEI Accession 0116411), as well as underway total CO2 and alkalinity data (NCEI Accession 0177325) and complementary parameters collected in surface waters every 4h to 8h (nutrients, chlorophyll-a, d13C and d18O). The OISO data are regularly included in international data syntheses (SOCAT, GLODAP).

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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 is part of the long-term monitoring program OISO (Ocean Indien Service d'Observations) initiated in 1998, and covering contrasting regions in the South-West Indian Ocean from the subtropics to the Antarctic zone. It includes hydrological and biogeochemical measurements (temperature, salinity, oxygen, total CO2, alkalinity, nutrients, chlorophyll-a, d13C and d18O) collected in the water column (17 stations) using a rosette-CTD equipped with 24 Niskin bottles. Most of the samples were collected from the surface down to 1200m, except for 2 deep stations (down to the bottom at 30°S and 56.5°S). During the OISO-21 cruise we also collected underway fCO2 data (NCEI Accession 0116411), as well as underway total CO2 and alkalinity data (NCEI Accession 0177325) and complementary parameters collected in surface waters every 4h to 8h (nutrients, chlorophyll-a, d13C and d18O). The OISO data are regularly included in international data syntheses (SOCAT, GLODAP).
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identifier	https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0290760.xml
issued	2024-04-02T00:00:00.000+00:00
keyword	[ "0290760", "CHLOROPHYLL A", "DEPTH - OBSERVATION", "DISSOLVED INORGANIC CARBON (DIC)", "DISSOLVED OXYGEN", "HYDROSTATIC PRESSURE", "nitrate + nitrite content (concentration)", "phosphate", "SALINITY", "silicate", "total alkalinity", "WATER TEMPERATURE", "carbon dioxide (CO2) gas analyzer", "CTD", "Niskin bottle", "nutrient autoanalyzer", "oxygen sensor", "temperature sensor", "thermosalinograph", "titrator", "biological", "chemical", "discrete sample", "physical", "profile", "Marion Dufresne", "Sorbonne University", "Sorbonne University", "The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP)", "Indian Ocean", "oceanography", "OISO-21", "35MF20120125", "Ocean Carbon and Acidification Data System (OCADS) Project", "OISO", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL", "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 > PHOSPHATE", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE", "EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE", "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE", "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY", "Discrete measurement", "Profile", "OISO", "C13", "CTD_OXY", "CTD_OXY_CAL", "CTD_PRES", "CTD_SAL", "CTD_TEMP", "Chla", "Depth", "Meas_Oxygen", "Meas_Salinity", "NOx", "Phosphate", "Silicate", "TA", "TCO2", "AUTOANALYZER > AUTOANALYZER", "CO2 ANALYZERS > CO2 ANALYZERS", "CTD > Conductivity, Temperature, Depth", "NISKIN BOTTLES", "OXYGEN METERS > OXYGEN METERS", "TEMPERATURE SENSORS > TEMPERATURE SENSORS", "THERMOSALINOGRAPHS", "MARION DUFRESNE (call sign: FNIN, ICES code: 35MV, 1995-)", "OCEAN > INDIAN OCEAN", "South Indian Ocean", "Southern Ocean" ]
landingPage	https://www.ncei.noaa.gov/contact
language	[]
license	https://creativecommons.org/publicdomain/zero/1.0/
modified	2024-04-03T00:00:00.000+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://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_oiso.html" ]
rights	otherRestrictions
spatial	88.0,-56.0,52.0,-25.0
temporal	2012-01-25T00:00:00+00:00/2012-03-07T00:00:00+00:00
title	Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity and other variables collected from discrete sample and profile observations during R/V Marion Dufresne OISO-21 cruise (EXPOCODE 35MF20120125) in the South Indian Ocean and the corresponding Southern Ocean sector from 2012-01-25 to 2012-03-07 (NCEI Accession 0290760)

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