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| Titel |
Land-atmosphere coupling associated with snow cover |
| VerfasserIn |
Emanuel Dutra, Christoph Schär, Pedro Viterbo, Pedro M. A. Miranda |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250050638
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| Zusammenfassung |
| Two EC-EARTH AMIP type simulations of 30 years were carried out to investigate the role of snow cover inter-annual variability on near surface and ground temperature variability. The first simulation was forced by climatological boundary conditions (SST and sea ice) (COUP). A second simulation is performed by prescribing the daily climatology maps of snow mass, snow density and snow albedo derived from the COUP simulation. In this second simulation (UNCOUP) the inter-annual variability of snow cover is suppressed. Preliminary results show that the inter-annual variability of snow cover is closely related with near surface and ground temperature variability. In the UNCOUP simulation there is a reduction of almost 60% of the near surface temperature inter-annual variability when compared with COUP. The results point to the strong land-atmosphere decoupling induced by snow cover. The role of boundary conditions is also investigated by performing a second set of simulation with time varying SSTs and sea ice. |
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