Weather type dependent quality assessment of a sat

Authors: Boris Thies Andreas Turek Thomas Nauss Jörg Bendix

Publish Date: 2010/06/20

Volume: 107, Issue: 3-4, Pages: 81-89

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Abstract

The sensitivity of a recently published satellitebased rainfall detection scheme with differing frontal weather regimes is investigated for 676 precipitation scenes between January and August 2004 For this purpose the rain area classified by the recent Rain Area Delineation Scheme during Night time RADSN was compared to the rain area detected by the radar network of the German Weather Service The validation results indicate that the rain area detected by RADSN is highly consistent with the radar network mean POD 062 mean FAR 052 mean ETS 022 However the bias indicates a mean overestimation of 42 The classification results show that the satellite technique performs better in cold frontal situations and thunderstorms Therefore further investigations are needed to address the overall performance as well as the dependency on different weather situations and in order to allow reliable rain area detection during nighttime independent of the prevailing weather situationThe authors are grateful to the German Weather Service DWD for providing the groundbased precipitation dataset The current study was funded by the German Ministry of Research and Education BMBF in the framework of GLOWADanube project GD/2004/TP10 precipitation/remote sensing as well as by the German Research Council DFG BE 1780/181 within the SORT project Furthermore the authors would like to thank the anonymous reviewers for valuable remarks and comments which helped to improve the manuscript

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