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| Titel |
Sensitivity of the WRF model to the lower boundary in an extreme precipitation event – Madeira island case study |
| VerfasserIn |
J. C. Teixeira, A. C. Carvalho, M. J. Carvalho, T. Luna, A. Rocha |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 14, no. 8 ; Nr. 14, no. 8 (2014-08-06), S.2009-2025 |
| Datensatznummer |
250118593
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| Publikation (Nr.) |
 copernicus.org/nhess-14-2009-2014.pdf |
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| Zusammenfassung |
| The advances in satellite
technology in recent years have made feasible the acquisition of
high-resolution information on the Earth's surface. Examples of such
information include elevation and land use, which have become more detailed.
Including this information in numerical atmospheric models can improve their
results in simulating lower boundary forced events, by providing detailed
information on their characteristics. Consequently, this work aims to study
the sensitivity of the weather research and forecast (WRF) model to different
topography as well as land-use simulations in an extreme precipitation event.
The test case focused on a topographically driven precipitation event over
the island of Madeira, which triggered flash floods and mudslides in the
southern parts of the island. Difference fields between simulations were
computed, showing that the change in the data sets produced statistically
significant changes to the flow, the planetary boundary layer structure and
precipitation patterns. Moreover, model results show an improvement in model
skill in the windward region for precipitation and in the leeward region for
wind, in spite of the non-significant enhancement in the overall results with
higher-resolution data sets of topography and land use. |
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