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| Titel |
Precipitation climate maps of Belgium |
| VerfasserIn |
Michel Journée, Loris Foresti |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250088537
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| Publikation (Nr.) |
 EGU/EGU2014-2651.pdf |
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| Zusammenfassung |
| The Royal Meteorological Institute of Belgium (RMI) has recently updated the
precipitation climate maps of Belgium in order to account for the reference period
1981-2010. These climate maps include information on the mean annual, seasonal and
monthly precipitation quantities as well as on precipitation frequencies, i.e., the
average number of days per year with daily precipitation quantities exceeding given
thresholds. These maps mainly rely on the daily observations of the precipitation
quantities from the network of the climatological stations maintained by voluntary
observers.
Several issues were investigated in this study. First, a tradeoff had to be found between the
number of stations used in the mapping process and the level of data completeness of the
corresponding time series. Second, the benefit of exploiting covariate data was investigated.
A typical covariate is the orography. Another covariate results from measurements of the
precipitation quantities made with an ancillary networks of pluviometers. In particular, the
South part of Belgium, which exhibits a quite complex orography with respect to the rest of
the country, is covered by an additional network of about 90 automatic sensors
that became operational in 2005. The 2005-2012 mean precipitation quantities at
these stations enabled to improve the mapping of the precipitation normals for the
period 1981-2010. Finally, the uncertainty attached to the interpolation process was
assessed. |
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