The effect of radar-based QPE on the Fractions Skill Score used at the QPF verification
In this paper we show the influence of gauge adjustment technique, applied to radar-based rainfalls, on the results of QPF verification. The results were obtained for four convective events which produced heavy local rainfalls and caused local flash floods at the Czech territory. Numerical weather p...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2010-03-01
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| Series: | Advances in Geosciences |
| Online Access: | http://www.adv-geosci.net/25/91/2010/adgeo-25-91-2010.pdf |
| Summary: | In this paper we show the influence of gauge adjustment
technique, applied to radar-based rainfalls, on the results of QPF
verification. The results were obtained for four convective events which
produced heavy local rainfalls and caused local flash floods at the Czech
territory. Numerical weather prediction model COSMO was run to obtain
rainfall forecast and Fractions Skill Score was employed in the QPF
verification. Three different radar-based quantitative precipitation
estimates (QPE) were used for the verification and the verification results
were compared. The QPE data sets consisted of: (a) raw radar-based rainfall
values, (b) gauge corrected radar-based rainfalls with a simple domain-wide
correction, and (c) radar-based rainfalls with a pixel related gauge
adjustment. The results indicate small difference in area-related
verification results and prove that the simple domain wide correction
technique is sufficient for applying radar-based rainfalls as the
verification data. |
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| ISSN: | 1680-7340 1680-7359 |