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| Titel |
Surface winds in the Euro-Mediterranean area: the real resolution of numerical grids |
| VerfasserIn |
F. Chèruy, A. Speranza, A. Sutera, N. Tartaglione |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 22, no. 12 ; Nr. 22, no. 12 (2004-12-22), S.4043-4048 |
| Datensatznummer |
250015071
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| Publikation (Nr.) |
 copernicus.org/angeo-22-4043-2004.pdf |
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| Zusammenfassung |
Surface wind is a variable of great importance in forcing marine waves and
circulations, modulating surface fluxes, etc. Surface wind defined on
numerical grids is currently used in forecast-analysis, as well as in
climatology. Gridded fields, however, suffer for systematic errors associated
with the numerical procedures adopted in computing them. In this paper the
climatology of surface wind produced by three different numerical models in
the European-Mediterranean area is analyzed. The systematic loss of power at
the smallest grid-scales appears in the power spectrum of all the different
models. Some prototype numerical integrations show that this systematic
over-smoothing is due to numerical stabilization operators that represent the
main source of the diagnosed error; the error progression in space and time
is also analyzed.
Key words. Meteorology and atmospheric dynamics
(Mesoscale meteorology; Ocean-atmosphere interaction;
Climatology) |
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