Show simple item record

dc.contributor.authorGellens, D.
dc.coverage.spatialBelgique/België
dc.coverage.temporal21st century
dc.date2002
dc.date.accessioned2016-03-07T17:14:20Z
dc.date.accessioned2021-12-09T09:53:11Z
dc.date.available2016-03-07T17:14:20Z
dc.date.available2021-12-09T09:53:11Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/8575
dc.descriptionThe k-day extreme precipitation depths (k=1, 2, 3, 4, 5, 7, 10, 15, 20, 25 and 30) at the climatological network of Belgium (165 stations) are analysed to assess the regional GEV growth curves and to determine the at-site fractiles. The calendar year and the hydrological summer and winter are considered separately. The method proposed combines regional L-moment estimates of the GEV parameters and tends to take advantage of a few long-term well-documented series. Therefore, a data extension procedure based on the fractiles method has been used to extend the 1951-1995 observation period to the 1910-1995 reference period. This ensures the temporal homogeneity of the series by assessing the possible missing extremes and it places all the series in a reference period where the stationarity of the extreme precipitation has been verified. Using the 9 historical series and generating randomly located missing values the efficiency of three data extension methods has been evaluated. This comparison indicates that a procedure using the regional growth curve satisfies this task. It shows that the residual mean square error of the at-site means is reduced when the mean correlation between the reference station and the series presenting gaps exceeds 0.52 but that the corresponding error on high order fractiles is reduced for all the observed correlation and for large numbers (40-50) of missing values. A practical estimation of the confidence intervals is proposed.
dc.languageeng
dc.publisherIRM
dc.publisherKMI
dc.publisherRMI
dc.titleCombining regional approach and data extension procedure for assessing GEV distribution of extreme precipitation in Belgium
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceGeneral Public
dc.audienceScientific
dc.subject.freeextreme precipitation
dc.subject.freeGEV distribution
dc.subject.freeregionalisation
dc.subject.freedata extension
dc.subject.freeL-moments
dc.source.issue0
Orfeo.peerreviewedNot pertinent


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record