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| Titel |
Effects of sub-grid variability of precipitation and canopy water storage on climate model simulations of water cycle in Europe |
| VerfasserIn |
D. Wang, E. N. Anagnostou, G. Wang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 9th EGU Plinius Conference on Mediterranean Storms (2007) ; Nr. 17 (2008-07-29), S.49-53 |
| Datensatznummer |
250013624
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| Publikation (Nr.) |
 copernicus.org/adgeo-17-49-2008.pdf |
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| Zusammenfassung |
| The impact of sub-grid variability of precipitation and canopy water storage
is investigated over Central-South Europe by applying a new canopy
interception scheme into the Community Atmosphere Model (CAM, Version 3)
coupled with the Community Land Model (CLM, Version 3). The study shows that
while sub-grid variability exerts great impact on the land surface water
budget, the impact on the atmospheric hydrological processes is small and
only exception being the Mediterranean region. In this region, incorporation
of sub-grid variability is shown to reduce precipitation up to 1 mm/day (or
~8% relative to mean precipitation). The evapotranspiration ratio
(ratio of evapotranspiration to total precipitation) exhibited insignificant
deviations between the simulations with sub-grid variability and the ones
without, which indicates that the local source of moisture is not the cause
of the reduced precipitation. On the other hand, inducing sub-grid
variability alters the large-scale circulation, which transports less water
vapor form Atlantic Ocean to inland areas thus reducing precipitation in the
Mediterranean region. |
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