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Titel |
The FORGEX method of rainfall growth estimation I: Review of requirement |
VerfasserIn |
E. J. Stewart, D. W. Reed, D. S. Faulkner, N. S. Reynard |
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.187-195 |
Datensatznummer |
250000907
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Publikation (Nr.) |
copernicus.org/hess-3-187-1999.pdf |
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Zusammenfassung |
A growth factor is the ratio of the T-year extreme value to an index extreme
value such as the mean of annual maxima. Whereas a record length of ten or more
years may suffice to estimate the index variable, it is generally necessary to
blend data from several sites if estimates of exceptional extreme values are to
be obtained. Methods of rainfall growth estimation are reviewed, including
traditional methods which extend frequency curves to long return period by a
distributional assumption, and methods which study spatial dependence in extreme
rainfalls. It is desirable that estimates at neighbouring sites, and across
different durations and return periods, are internally consistent. The review
concludes that rather special techniques may be required if this goal of
estimation extreme rainfall depth consistently is to be met. The motivation of
the Focused Rainfall Growth Extension (FORGEX) method is presented. |
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