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Influence of sea level rise on the dynamics of salt inflows in the Baltic Sea
SMHI, Research Department, Oceanography.
SMHI, Research Department, Oceanography.
SMHI, Research Department, Oceanography.
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2015 (English)In: Journal of Geophysical Research - Oceans, ISSN 2169-9275, E-ISSN 2169-9291, Vol. 120, no 10, 6653-6668 p.Article in journal (Refereed) Published
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Abstract [en]

The Baltic Sea is a marginal sea, located in a highly industrialized region in Central Northern Europe. Saltwater inflows from the North Sea and associated ventilation of the deep exert crucial control on the entire Baltic Sea ecosystem. This study explores the impact of anticipated sea level changes on the dynamics of those inflows. We use a numerical oceanic general circulation model covering both the Baltic and the North Sea. The model successfully retraces the essential ventilation dynamics throughout the period 1961-2007. A suite of idealized experiments suggests that rising sea level is associated with intensified ventilation as saltwater inflows become stronger, longer, and more frequent. Expressed quantitatively as a salinity increase in the deep central Baltic Sea, we find that a sea level rise of 1 m triggers a saltening of more than 1 PSU. This substantial increase in ventilation is the consequence of the increasing cross section in the Danish Straits amplified by a reduction of vertical mixing.

Place, publisher, year, edition, pages
2015. Vol. 120, no 10, 6653-6668 p.
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Oceanography, Hydrology, Water Resources
Research subject
Oceanography
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URN: urn:nbn:se:smhi:diva-1940DOI: 10.1002/2014JC010642ISI: 000365539700004OAI: oai:DiVA.org:smhi-1940DiVA: diva2:924780
Available from: 2016-04-29 Created: 2016-03-03 Last updated: 2016-04-29Bibliographically approved

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Hordoir, RobinsonAxell, LarsLöptien, UlrikeDietze, HeinerKuznetsov, Ivan
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