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| Titel |
The FORGEX method of rainfall growth estimation II: Description |
| VerfasserIn |
D. W. Reed, D. S. Faulkner, E. J. Stewart |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 3, no. 2 ; Nr. 3, no. 2, S.197-203 |
| Datensatznummer |
250000908
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| Publikation (Nr.) |
 copernicus.org/hess-3-197-1999.pdf |
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| Zusammenfassung |
| The Focused Rainfall Growth Extension (FORGEX) method produces rainfall
growth curves focused on a subject site. Focusing allows the incorporation of
rainfall extremes observed regionally while respecting local variations in
growth rates. The starting point for the analysis is an extensive set of annual
maximum rainfalls, with values at each gauged site standardized by the median.
Following the philosophy of the earlier FORGE method, a strongly empirical
approach is adopted. The rainfall growth curve is represented by linear segments
on a Gumbel scale, and is fitted by a least-squares criterion. The selection of
data points is intricate and includes both the traditional pooling of regional
extremes and the incorporation of network maximum events. The latter comprise
the largest events from successive hierarchical networks of gauges, focused on
the site for which estimates are requires. Their treatment takes account of
interdependence using the Dales and Reed model of spatial dependence in rainfall
extremes. |
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