References

ADGEO

Advances in Geosciences

ADGEO

Adv. Geosci.

1680-7359

Copernicus Publications

Göttingen, Germany

10.5194/adgeo-16-33-2008

Process-oriented statistical-dynamical evaluation of LM precipitation forecasts

Claußnitzer

¹ Langer

¹ Névir

¹ Reimer

¹ Cubasch

Institut f¨ur Meteorologie, Freie Universität Berlin Carl-Heinrich-Becker-Weg 6-10, D-12165 Berlin, Germany

09 04 2008

16 33 41

2008

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The objective of this study is the scale dependent evaluation of precipitation forecasts of the Lokal-Modell (LM) from the German Weather Service in relation to dynamical and cloud parameters. For this purpose the newly designed Dynamic State Index (DSI) is correlated with clouds and precipitation. The DSI quantitatively describes the deviation and relative distance from a stationary and adiabatic solution of the primitive equations. A case study and statistical analysis of clouds and precipitation demonstrates the availability of the DSI as a dynamical threshold parameter. This confirms the importance of imbalances of the atmospheric flow field, which dynamically induce the generation of rainfall.

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