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Historical and projected Mediterranean sea-surface and deep responses to winter large-scale atmospheric forcing in Med-Cordex simulations

Urheber*innen

Cusinato,  Eleonora
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Rubino,  Angelo
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Gualdi,  Silvio
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Zanchettin,  Davide
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Zitation

Cusinato, E., Rubino, A., Gualdi, S., Zanchettin, D. (2023): Historical and projected Mediterranean sea-surface and deep responses to winter large-scale atmospheric forcing in Med-Cordex simulations, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3189


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020345
Zusammenfassung
Dominant Euro-Atlantic modes of large-scale atmospheric variability, such as the North Atlantic Oscillation (NAO), the Eastern Atlantic pattern (EA), the Eastern Atlantic Western Russian pattern (EAWR) and the Scandinavian pattern (SCA) are known to significantly affect interannual-to-decadal climatic and hydroclimatic variability of the Mediterranean region especially during the winter season. Whereas previous studies assessed the impacts of these modes on air-sea heat and freshwater fluxes over the Mediterranean Sea, few studies explored the propagation of these signals from the surface towards the interior of the Mediterranean Sea and mostly they relied on the use of single model simulations.In this contribution we investigate the Mediterranean thermohaline response to winter forcing from NAO, EA, EAWR and SCA using a multi-model analysis of evaluation, historical and future scenarios simulations of the Med-Cordex initiative. We present results from a composite analysis around strong positive and negative phases of these modes to track the propagation of the associated signals from the sea surface towards the Mediterranean interior in key regions such as the South Adriatic, the Aegean and Levantine Seas and the Gulf of Lion. Different simulations show only a partial agreement as far as the identification of the modes mostly contributing to deep water formation is concerned.