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| Titel |
Implementation and testing of a desert dust module in a regional climate model |
| VerfasserIn |
A. S. Zakey, F. Solmon, F. Giorgi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 6, no. 12 ; Nr. 6, no. 12 (2006-10-19), S.4687-4704 |
| Datensatznummer |
250004147
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| Publikation (Nr.) |
 copernicus.org/acp-6-4687-2006.pdf |
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| Zusammenfassung |
| In an effort to improve our understanding of aerosol impacts on climate, we
implement a desert dust module within a regional climate model (RegCM). The
dust module includes emission, transport, gravitational settling, wet and
dry removal and calculations of dust optical properties. The coupled
RegCM-dust model is used to simulate two dust episodes observed over the
Sahara region (a northeastern Africa dust outbreak, and a west
Africa-Atlantic dust outbreak observed during the SHADE "Saharan Dust
Experiment"), as well as a three month simulation over an extended domain
covering the Africa-Europe sector. Comparisons with satellite and local
aerosol optical depth measurements shows that the model captures the main
spatial (both horizontal and vertical) and temporal features of the dust
distribution. The main model deficiency occurs in the representation of
certain dynamical patterns observed during the SHADE case which is
associated with an active easterly wave that contributed to the generation
of the dust outbreak. The model appears suitable to conduct long term
simulations of the effects of Saharan dust on African and European climate. |
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