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| Titel |
Exploring the diurnal cycle in convection resolving COSMO-CLM simulations |
| VerfasserIn |
M. Suklitsch, A. Gobiet |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250065847
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| Zusammenfassung |
| With the horizontal resolution for long term climate scenarios ever increasing, it is important
to get to know the performance of regional climate models at the convection resolving scale.
This particularly includes sub-daily variability (e.g., diurnal cycles). Long term climate
scenarios at that scale will be feasible only in a few years, but it is mandatory to understand
potential shortcomings of RCMs now and supply model developers with hints for
improvements.
In the present study a 12 simulations ensemble of CCLM (COSMO model in Climate
Mode) simulations at 3 km and 1 km horizontal resolution is evaluated focusing on the
differences in the results due to various changes to the setup. The setup changes
range from specific tuning parameters to an entire new model version. In addition to
inter-comparing the various simulations the results are also evaluated against an
independent reference dataset (INCA, Integrated Nowcasting through Comprehensive
Analysis).
It will be shown that the new model version has beneficial effects mainly on the diurnal
cycle of temperature and that the strongest impact on the diurnal cycle of precipitation can be
achieved by changes in the microphysics scheme. |
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