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Ensemble Modeling of the Baltic Sea Ecosystem to Provide Scenarios for Management

January 16, 2014

We present a multi-model ensemble study for the Baltic Sea, and investigate the combined impact of changing climate, external nutrient supply, and fisheries on the marine ecosystem. The applied regional climate system model contains state-of-the-art component models for the atmosphere, sea ice, ocean, land surface, terrestrial and marine biogeochemistry, and marine food-web. Time-dependent scenario simulations for the period 1960–2100 are performed and uncertainties of future projections are estimated. In addition, reconstructions since 1850 are carried out to evaluate the models sensitivity to external stressors on long time scales. Information from scenario simulations are used to support decision-makers and stakeholders and to raise awareness of climate change, environmental problems, and possible abatement strategies among the general public using geovisualization. It is concluded that the study results are relevant for the Baltic Sea Action Plan of the Helsinki Commission.

Meier H E M, Andersson H C, Arheimer B, Donnely C, et al., in press. Ensemble Modeling of the Baltic Sea Ecosystem to Provide Scenarios for Management, AMBIO, 43, 1 37-48, 2014, doi:10.1007/s13280-013-0475-6. Article.

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