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| Titel |
Studying the extremes: hydrometeorological investigation of a flood-causing rainstorm over Israel |
| VerfasserIn |
E. Morin, N. Harats, Y. Jacoby, S. Arbel, M. Getker, A. Arazi, T. Grodek, B. Ziv, U. Dayan |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Mediterranean storms and extreme events in an era of climate change ; Nr. 12 (2007-08-28), S.107-114 |
| Datensatznummer |
250010365
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| Publikation (Nr.) |
 copernicus.org/adgeo-12-107-2007.pdf |
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| Zusammenfassung |
| Analysis of extreme hydrometeorological events is important for
characterizing and better understanding the meteorological conditions that
can generate severe rainstorms and the consequent catastrophic flooding.
According to several studies (e.g., Alpert et al., 2004; Wittenberg et al.,
2007), the occurrence of such extreme events is increasing over the eastern
Mediterranean although total rain amounts are generally decreasing. The
current study presents an analysis of an extreme event utilizing different
methodologies: (a) synoptic maps and high resolution satellite imagery for
atmospheric condition analysis; (b) rainfall analysis by rain gauges data;
(c) meteorological radar rainfall calibration and analysis; (d) field
measurements for estimating maximum peak discharges; and, (e) high
resolution aerial photographs together with field surveying for quantifying
the geomorphic impacts. The unusual storm occurred over Israel between 30
March and 2 April, 2006. Heavy rainfall produced more than 100 mm in some
locations in only few hours and more than 200 mm in the major core area.
Extreme rain intensities with recurrence intervals of more than 100 years
were found for durations of 1 h and more as well as for the daily rain
depth values. In the most severely affected area, Wadi Ara, extreme flash
floods caused damages and casualties. Specific peak discharges were as high
as 10–30 m³/s/km² for catchments of the size of 1–10 km²,
values larger than any recorded floods in similar climatic regions in
Israel. |
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