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Assessing uncertainty in radar measurements on simplified meteorological scenarios

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Author(s): L. Molini | A. Parodi | N. Rebora | F. Siccardi

Journal: Advances in Geosciences
ISSN 1680-7340

Volume: 7;
Start page: 141;
Date: 2006;
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ABSTRACT
A three-dimensional radar simulator model (RSM) developed by Haase (1998) is coupled with the nonhydrostatic mesoscale weather forecast model Lokal-Modell (LM). The radar simulator is able to model reflectivity measurements by using the following meteorological fields, generated by Lokal Modell, as inputs: temperature, pressure, water vapour content, cloud water content, cloud ice content, rain sedimentation flux and snow sedimentation flux. This work focuses on the assessment of some uncertainty sources associated with radar measurements: absorption by the atmospheric gases, e.g., molecular oxygen, water vapour, and nitrogen; attenuation due to the presence of a highly reflecting structure between the radar and a "target structure". RSM results for a simplified meteorological scenario, consisting of a humid updraft on a flat surface and four cells placed around it, are presented.

Tango Jona
Tangokurs Rapperswil-Jona

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