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| Titel |
Estimation of the systematic error of precipitation and humidity in the MM5 model |
| VerfasserIn |
S. Ivanov, C. Simmer, J. Palamarchuk, S. Bachner |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Observation, Prediction and Verification of Precipitation (EGU Session 2007) ; Nr. 16 (2008-04-09), S.97-107 |
| Datensatznummer |
250013076
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| Publikation (Nr.) |
 copernicus.org/adgeo-16-97-2008.pdf |
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| Zusammenfassung |
| To comprehensively diagnose model capabilities in simulating atmospheric
flow including the relevant microphysical processes, the main prognostic
fields of the MM5 model are compared with ERA40 reanalysis data. This
approach allows to identify and compare meaningful features of model
parameterization schemes and to quantify model errors. Various combinations
of schemes for cumulus convection, planetary boundary layer (PBL),
microphysics and radiative transfer are used in order to identify those
combinations which produce the closest resemblance between model state and
reanalysis. The spatial structure of systematic errors, both horizontal and
vertical will be described and geographical regions and synoptic situations
will be identified, which are associated with pronounced systematic model
deviations. The study focused on precipitation and humidity fields as well
as on the main thermodynamic atmospheric variables on a coarse resolution
grid (about 80 km) over the North Atlantic - Europe region. Our results
identify advantages and shortcomings of the various parameterization
schemes. They also indicate that, in general, the combination of best
schemes does not result in optimal simulations of a particular variable. |
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