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Physical processes mediating climate change impacts on regional sea ecosystems

Holt, J.; Schrum, C.; Cannaby, H.; Daewel, U.; Allen, I.; Artioli, Y.; Bopp, L.; Butenschon, M.; Fach, B.A.; Harle, J.; Pushpadas, D.; Salihoglu, B.; Wakelin, S.. 2014 Physical processes mediating climate change impacts on regional sea ecosystems. Biogeosciences Discussions, 11 (2). 1909-1975. 10.5194/bgd-11-1909-2014

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Abstract/Summary

Regional seas are exceptionally vulnerable to climate change, yet are the most directly societally important regions of the marine environment. The combination of widely varying conditions of mixing, forcing, geography (coastline and bathymetry) and exposure to the open-ocean makes these seas subject to a wide range of physical processes that mediates how large scale climate change impacts on these seas' ecosystems. In this paper we explore these physical processes and their biophysical interactions, and the effects of atmospheric, oceanic and terrestrial change on them. Our aim is to elucidate the controlling dynamical processes and how these vary between and within regional seas. We focus on primary production and consider the potential climatic impacts: on long term changes in elemental budgets, on seasonal and mesoscale processes that control phytoplankton's exposure to light and nutrients, and briefly on direct temperature response. We draw examples from the MEECE FP7 project and five regional models systems using ECOSMO, POLCOMS-ERSEM and BIMS_ECO. These cover the Barents Sea, Black Sea, Baltic Sea, North Sea, Celtic Seas, and a region of the Northeast Atlantic, using a common global ocean-atmosphere model as forcing. We consider a common analysis approach, and a more detailed analysis of the POLCOMS-ERSEM model.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.5194/bgd-11-1909-2014
ISSN: 1810-6285
Additional Information. Not used in RCUK Gateway to Research.: "This discussion paper has been under review for the journal Biogeosciences (BG). A final paper in BG is not foreseen"
Date made live: 12 Mar 2014 16:58 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/505850

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