Evaluating multi-scale precipitation forecasts using high resolution analysis
The SAL (Structure, Amplitude, Location) method is used for verification of precipitation forecasts at horizontal grid spacings ranging from 2.5 km to 25 km, using a high-resolution 1 km precipitation analysis as a reference. The verification focuses on a summertime period with predominantly convect...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2010-07-01
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| Series: | Advances in Science and Research |
| Online Access: | http://www.adv-sci-res.net/4/89/2010/asr-4-89-2010.pdf |
| Summary: | The SAL (Structure, Amplitude, Location) method is used for verification of
precipitation forecasts at horizontal grid spacings ranging from 2.5 km to
25 km, using a high-resolution 1 km precipitation analysis as a reference.
The verification focuses on a summertime period with predominantly
convective precipitation. The verification domain contains lowland as well
as alpine areas. Evaluation of the individual SAL components shows that with
regard to area mean values (<i>A</i>) the benefit of high resolutions models
becomes apparent only in high impact weather situations. For the summertime
period studied, the subjective impression of better structured precipitation
fields (<i>S</i>) in higher resolution models can generally be confirmed. The most
significant improvement appears to be associated with explicit simulation of
deep convection. |
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| ISSN: | 1992-0628 1992-0636 |