Discrete, profile measurements of the dissolved inorganic carbon (DIC), total alkalinity, pH on total scale and other hydrographic and chemical data obtained during the PS-94, ARK-XXIX/3, TransArc-II cruise onboard R/V Polarstern (EXPOCODE 06AQ20150817) in the central Arctic Ocean from 2015-08-17 to 2015-10-15 (NCEI Accession 0170256)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 03:04 AM | Dataset Last Updated: June 04, 2026 at 12:00 AM

The expedition PS94 Trans-Arctic survey of the Arctic Ocean in transition ("TransArc II") aimed at capturing the physical, biological, and chemical changes of the Arctic Ocean. The retreat of the multi-year sea ice over the last decades, and the changes in ice and ocean circulation are tightly linked to changes in the heat and fresh water distribution with consequences for the gas exchange between ocean and atmosphere, for biogeochemical cycling and for organisms and ecosystems in the sea ice, in the water column and on the sea floor. This dataset includes discrete bottle measurements of Dissolved Inorganic Carbon (DIC), Total Alkalinity, pH on total scale, water temperature and salinity, oxygen, nutrients, CFCs, Dissolved organic carbon and other parameters measured onboard the R/V Polarstern in the central Arctic Ocean during the PS-94, ARK-XXIX/3, TransArc-II cruise (EXPOCODE 06AQ20150817) from 2015-08-17 to 2015-10-15.

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description	The expedition PS94 Trans-Arctic survey of the Arctic Ocean in transition ("TransArc II") aimed at capturing the physical, biological, and chemical changes of the Arctic Ocean. The retreat of the multi-year sea ice over the last decades, and the changes in ice and ocean circulation are tightly linked to changes in the heat and fresh water distribution with consequences for the gas exchange between ocean and atmosphere, for biogeochemical cycling and for organisms and ecosystems in the sea ice, in the water column and on the sea floor. This dataset includes discrete bottle measurements of Dissolved Inorganic Carbon (DIC), Total Alkalinity, pH on total scale, water temperature and salinity, oxygen, nutrients, CFCs, Dissolved organic carbon and other parameters measured onboard the R/V Polarstern in the central Arctic Ocean during the PS-94, ARK-XXIX/3, TransArc-II cruise (EXPOCODE 06AQ20150817) from 2015-08-17 to 2015-10-15.
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identifier	https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0170256.xml
issued	2018-01-25T00:00:00.000+00:00
keyword	[ "0170256", "CHLOROFLUOROCARBON (CFC)", "DISSOLVED INORGANIC CARBON (DIC)", "DISSOLVED ORGANIC CARBON", "NUTRIENTS", "OXYGEN", "pH", "SALINITY", "sulfur hexafluoride (SF6)", "total alkalinity", "WATER TEMPERATURE", "coulometer for DIC measurement", "CTD", "pH sensor", "titrator", "chemical", "discrete sample", "physical", "profile", "RV Polarstern", "Alfred-Wegener Institute, Helmholtz Centre for Polar and Marine Research", "Princeton University", "The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP)", "Arctic Ocean", "oceanography", "AWI > Alfred Wegener Institute for Polar and Marine Research", "ARK-XXIX/3", "PS-94", "TransArc-II", "06AQ20150817", "Ocean Carbon and Acidification Data System (OCADS) Project", "Arctic Ocean", "ART", "Arctic ROOS", "Arctic/Subarctic Ocean Fluxes (ASOF)", "FRAM", "GEOTRACES (GEOTRACES)", "RACE", "TransArc II", "Transdrift", "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > CHLOROFLUOROCARBONS", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > DISSOLVED GASES", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > HYDROCARBONS", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH", "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE", "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY", "Discrete measurement", "Profile", "06AQ20150817", "ARK-XXIX/3", "TransArc-II", "ALKALI", "CFC", "CTDOXY", "CTDSAL", "CTDTMP", "DOC", "OXYGEN", "PH_TOT", "SALNTY", "SILCAT, NITRAT, NITRIT, PHSPHT", "TCARBN", "COULOMETERS", "CTD > Conductivity, Temperature, Depth", "PH METERS > PH METERS", "Ships", "Polarstern (call sign: DBLK, ICES code: 06AQ, 1982-)", "OCEAN > ARCTIC OCEAN", "Arctic Ocean" ]
landingPage	https://www.ncei.noaa.gov/contact
language	[]
license	https://creativecommons.org/publicdomain/zero/1.0/
modified	2026-06-04T00:00:00.000+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/RepeatSections/CLIVAR_Arctic_Ocean.html", "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system" ]
rights	otherRestrictions
spatial	-116.4,70.7,20.0,90.0
temporal	2015-08-17T00:00:00+00:00/2015-10-15T00:00:00+00:00
theme	[ "geospatial" ]
title	Discrete, profile measurements of the dissolved inorganic carbon (DIC), total alkalinity, pH on total scale and other hydrographic and chemical data obtained during the PS-94, ARK-XXIX/3, TransArc-II cruise onboard R/V Polarstern (EXPOCODE 06AQ20150817) in the central Arctic Ocean from 2015-08-17 to 2015-10-15 (NCEI Accession 0170256)

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