 |
| Titel |
Region-of-influence approach to a frequency analysis of heavy precipitation in Slovakia |
| VerfasserIn |
L. Gaal, J. Kyselý, J. Szolgay |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 12, no. 3 ; Nr. 12, no. 3 (2008-05-27), S.825-839 |
| Datensatznummer |
250010660
|
| Publikation (Nr.) |
 copernicus.org/hess-12-825-2008.pdf |
|
|
|
|
|
| Zusammenfassung |
| The paper compares different approaches to regional frequency analysis with
the main focus on the implementation of the region-of-influence (ROI)
technique for the modelling of probabilities of heavy precipitation amounts
in the area of the Western Carpathians. Unlike the conventional regional
frequency analysis where the at-site design values are estimated within a
fixed pooling group (region), the ROI approach as a specific alternative to
focused pooling techniques makes use of flexible pooling groups, i.e. each
target site has its own group of sufficiently similar sites. In this paper,
various ROI pooling schemes are constructed as combinations of different
alternatives of sites' similarity (pooling groups defined according to
climatological characteristics and geographical proximity of sites,
respectively) and pooled weighting factors. The performance of the ROI
pooling schemes and statistical models of conventional (regional and
at-site) frequency analysis is assessed by means of Monte Carlo simulation
studies for precipitation annual maxima for the 1-day and 5-day durations in
Slovakia. It is demonstrated that a) all the frequency models based on the
ROI method yield estimates of growth curves that are superior to the
standard regional and at-site estimates at most individual sites, and b) the
selection of a suitable ROI pooling scheme should be adjusted to the
dominant character of the formation of heavy precipitation. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|