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| Titel |
Estimation of convective precipitation: the meteorological radar versus an automatic rain gauge network |
| VerfasserIn |
M. C. Llasat, T. Rigo, M. Ceperuelo, A. Barrera |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 6th Plinius Conference on Mediterranean Storms (2004) ; Nr. 2 (2005-05-02), S.103-109 |
| Datensatznummer |
250000304
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| Publikation (Nr.) |
 copernicus.org/adgeo-2-103-2005.pdf |
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| Zusammenfassung |
| The estimation of convective precipitation and its contribution to total
precipitation is an important issue both in hydrometeorology and radio
links. The greatest part of this kind of precipitation is related with high
intensity values that can produce floods and/or damage and disturb radio
propagation. This contribution proposes two approaches for the estimation of
convective precipitation, using the β parameter that is related with
the greater or lesser convective character of the precipitation event, and
its time and space distribution throughout the entire series of the samples.
The first approach was applied to 126 rain gauges of the Automatic System of
Hydrologic Information of the Internal Basins of Catalonia (NE Spain). Data
are series of 5-min rain rate, for the period 1996-2002, and a long series
of 1-min rain rate starting in 1927. Rainfall events were classified
according to this parameter. The second approach involved using information
obtained by the meteorological radar located near Barcelona. A modified
version of the SCIT method for the 3-D analysis and a combination of
different methods for the 2-D analysis were applied. Convective rainfall
charts and β charts were reported. Results obtained by the rain gauge
network and by the radar were compared. The application of the β
parameter to improve the rainfall regionalisation was demonstrated. |
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