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| Titel |
Evaluation of the Mediterranean surface heat fluxes with a regional coupled model |
| VerfasserIn |
A. Casado-Lopez, L. Li |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250023833
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| Zusammenfassung |
| Surface heat fluxes over the Mediterranean Sea are not very well known, even the
total heat flux integrated over the whole basin is quite divergent among authors.
This work tries to characterize and quantify the spatial distribution of surface
heat fluxes and the temporal variability by using a regional coupled sea-atmosphere
model over the Mediterranean region. The atmospheric model LMDZ zoomed over the
Mediterranean is coupled to MED8, an oceanic general circulation model for the
Mediterranean Sea. We analyze a 43-year simulation for the period ERA40, from 1958
to 2001 to determine the distribution and variability of heat fluxes. Heat fluxes
can be divided up into 2 categories: radiative (solar and infrared) and turbulent
(sensible and latent heat flux). The regional coupled model is forced in the
atmosphere by the ERA40 dataset (temperature and wind) at the lateral boundary.
Variability of the surface heat fluxes is studied in relation to the SST in
the regions of deep water formation (Gulf of Lions, Adriatic Sea, and Aegean Sea).
An attempt is also make to determine the relation to the atmospheric regimes. The
North Atlantic Oscillation (NAO) is firstly used to determine the atmospheric
general circulation over the North Atlantic and the impact on the Mediterranean sea
surface heat fluxes. Other atmospheric circulation indexes, such as WeMo and MO
indexes are also studied. |
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