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| Titel |
Modelling the spatial variability of snow water equivalent at the catchment scale |
| VerfasserIn |
T. Skaugen |
| 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 ; 11, no. 5 ; Nr. 11, no. 5 (2007-09-06), S.1543-1550 |
| Datensatznummer |
250009466
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| Publikation (Nr.) |
 copernicus.org/hess-11-1543-2007.pdf |
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| Zusammenfassung |
| The spatial distribution of snow water equivalent (SWE) is modelled as a two
parameter gamma distribution. The parameters of the distribution are
dynamical in that they are functions of the number of accumulation and
melting events and the temporal correlation of accumulation and melting
events. The estimated spatial variability is compared to snow course
observations from the alpine catchments Norefjell and Aursunden in Southern
Norway. A fixed snow course at Norefjell was measured 26 times during the
snow season and showed that the spatial coefficient of variation change
during the snow season with a decreasing trend from the start of the
accumulation period and a sharp increase in the melting period. The gamma
distribution with dynamical parameters reproduced the observed spatial
statistical features of SWE well both at Norefjell and Aursunden. Also the
shape of simulated spatial distribution of SWE agreed well with the observed
at Norefjell. The temporal correlation tends to be positive for both
accumulation and melting events. However, at the start of melting, a
better fit between modelled and observed spatial standard deviation of SWE
is obtained by using negative correlation between SWE and melt. |
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