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Carbon fluxes in the Arctic Ocean - potential impact by climate change
Responsible organisation
2001 (English)In: Polar Research, ISSN 0800-0395, E-ISSN 1751-8369, Vol. 20, no 2, 225-232 p.Article in journal (Refereed) Published
Abstract [en]

Because of its ice cover the central Arctic Ocean has not been considered as a sink of atmospheric carbon dioxide. With recent observations of decreasing ice cover there is the potential for an increased air-sea carbon dioxide flux. Though the sensitivity of the carbon fluxes to a climate change can at present only be speculated, we know the responses to some of the forcing, including: melting of the sea ice cover make the air-sea flux operate towards equilibrium; increased temperature of the surface water will decrease the solubility and thus the air-sea flux; and an open ocean might increase primary production through better utilization of the nutrients. The potential change in air-sea CO2 fluxes caused by different forcing as a result of climate change is quantified based on measured data. If the sea ice melts, the top 100 m water column of the Eurasian Basin has, with the present conditions, a potential to take up close to 50 g C m(-2). The freshening of the Surface water caused by a sea ice melt will increase the CO2 solubility corresponding to an uptake of similar to3 g C m(-2), while a temperature increase of 1 degreesC in the same waters will out-gas 8 g C m(-2), and a utilization of all phosphate will increase primary production by 75 g C m(-2).

Place, publisher, year, edition, pages
2001. Vol. 20, no 2, 225-232 p.
National Category
Natural Sciences
Research subject
SWEDARCTIC 1996, Arctic Ocean 1996
Identifiers
URN: urn:nbn:se:polar:diva-3256DOI: 10.1111/j.1751-8369.2001.tb00060.xOAI: oai:DiVA.org:polar-3256DiVA: diva2:1049802
Note

International Symposium on the Role of Ocean -Sea Ice-Atmosphere Interaction in Polar and Sub-Polar Climate, TROMSO, NORWAY, SEP 21-24, 2000

Available from: 2016-11-25 Created: 2016-11-21 Last updated: 2017-11-29

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