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| Titel |
The representation of location by a regional climate model in complex terrain |
| VerfasserIn |
D. Maraun, M. Widmann |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 19, no. 8 ; Nr. 19, no. 8 (2015-08-06), S.3449-3456 |
| Datensatznummer |
250120782
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| Publikation (Nr.) |
 copernicus.org/hess-19-3449-2015.pdf |
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| Zusammenfassung |
| To assess potential impacts of climate change for a specific location, one
typically employs climate model simulations at the grid box corresponding to
the same geographical location. For most of Europe, this choice is well
justified. But, based on regional climate simulations, we show that simulated
climate might be systematically displaced compared to observations. In
particular in the rain shadow of mountain ranges, a local grid box is
therefore often not representative of observed climate: the simulated
windward weather does not flow far enough across the mountains; local grid
boxes experience the wrong air masses and atmospheric circulation. In some
cases, also the local climate change signal is deteriorated. Classical bias
correction methods fail to correct these location errors. Often, however, a
distant simulated time series is representative of the considered observed
precipitation, such that a non-local bias correction is possible. These
findings also clarify limitations of bias correcting global model errors, and
of bias correction against station data. |
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