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| Titel |
Orographic effects on convective precipitation and space-time rainfall variability: preliminary results |
| VerfasserIn |
P. Bongioannini Cerlini, K. A. Emanuel, E. Todini |
| 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 ; 9, no. 4 ; Nr. 9, no. 4 (2005-10-07), S.285-299 |
| Datensatznummer |
250006963
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| Publikation (Nr.) |
 copernicus.org/hess-9-285-2005.pdf |
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| Zusammenfassung |
| In the EFFS Project, an attempt has been made to develop a general framework
to study the predictability of severe convective rainfall events in the
presence of orography. Convective activity is embedded in orographic rainfall
and can be thought as the result of several physical mechanisms. Quantifying
its variability on selected area and time scales requires choosing the best
physical representation of the rainfall variability on these scales. The main
goal was (i) to formulate a meaningful set of experiments to compute the
oscillation of variance due to convection inside model forecasts in the
presence of orography and (ii) to give a statistical measure of it that might
be of value in the operational use of atmospheric data. The study has been
limited to atmospheric scales that span the atmosphere from 2 to 200 km and
has been focused on extreme events with deep convection. Suitable measures of
the changing of convection in the presence of orography have been related to
the physical properties of the rainfall environment. Preliminary results for
the statistical variability of the convective field are presented. |
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