Original scientific paper

HIGH RESOLUTION PRECIPITATION ANALYSIS OVER COMPLEX TERRAIN BY USING PHYSICAL A PRIORI KNOWLEDGE

Benedikt Bica ; Department of Meteorology and Geophysics, University of Vienna UZA II, Althanstraße 14, 1090 Wien, Austria
Reinhold Steinacker ; Department of Meteorology and Geophysics, University of Vienna UZA II, Althanstraße 14, 1090 Wien, Austria

Abstract

The fingerprint concept (i.e. a physical model used for downscaling) related to the objective highresolution analysis scheme VERA (Vienna Enhanced Resolution Analysis) is extended towards the use for precipitation analyses over complex topography. A fingerprint for upslope rain is developed which simulates the effects of air mass lifting and triggering of precipitation associated with a mountain slope, as well as the dependence of height. It further includes the decrease of accumulated precipitation in the relatively drier regions in the inner Alps. The background of the VERA analysis scheme is described as well as the different constraints made during the
development of the fingerprint. Evaluations of analyses with and without fingerprint are presented.

Keywords

Precipitation; objective analysis; downscaling; complex terrain; upslope rain; Stau; fingerprint; model

Hrčak ID:

64509

URI

https://hrcak.srce.hr/64509

Publication date:

15.12.2005.

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