Influence of sea level rise on the dynamics of salt inflows in the Baltic Sea.

Hordoir, Robinson, Axell, Lars, Löptien, Ulrike , Dietze, Heiner and Kuznetsov, Ivan (2015) Influence of sea level rise on the dynamics of salt inflows in the Baltic Sea. Open Access Journal of Geophysical Research: Oceans, 120 (10). pp. 6653-6668. DOI 10.1002/2014JC010642.

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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

Document Type: Article
Keywords: Baltic Sea; sea level rise; salt inflows
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
Refereed: Yes
Open Access Journal?: No
Publisher: AGU (American Geophysical Union), Wiley
Projects: BONUS BIO-C3
Date Deposited: 19 Oct 2015 12:13
Last Modified: 27 Apr 2018 10:52

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