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| Titel |
Use of satellite-derived data for characterization of snow cover and simulation of snowmelt runoff through a distributed physically based model of runoff generation |
| VerfasserIn |
L. S. Kuchment, P. Romanov, A. N. Gelfan, V. N. Demidov |
| 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 ; 14, no. 2 ; Nr. 14, no. 2 (2010-02-22), S.339-350 |
| Datensatznummer |
250012187
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| Publikation (Nr.) |
 copernicus.org/hess-14-339-2010.pdf |
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| Zusammenfassung |
| A technique of using satellite-derived data for constructing continuous snow
characteristics fields for distributed snowmelt runoff simulation is
presented. The satellite-derived data and the available ground-based
meteorological measurements are incorporated in a physically based snowpack
model. The snowpack model describes temporal changes of the snow depth,
density and water equivalent (SWE), accounting for snow melt, sublimation,
refreezing melt water and snow metamorphism processes with a special focus
on forest cover effects. The remote sensing data used in the model consist
of products include the daily maps of snow covered area (SCA) and SWE
derived from observations of MODIS and AMSR-E instruments onboard Terra and
Aqua satellites as well as available maps of land surface temperature,
surface albedo, land cover classes and tree cover fraction. The model was
first calibrated against available ground-based snow measurements and then
applied to calculate the spatial distribution of snow characteristics using
satellite data and interpolated ground-based meteorological data. The
satellite-derived SWE data were used for assigning initial conditions and
the SCA data were used for control of snow cover simulation. The simulated
spatial distributions of snow characteristics were incorporated in a
distributed physically based model of runoff generation to calculate
snowmelt runoff hydrographs. The presented technique was applied to a study
area of approximately 200 000 km2 including the Vyatka River basin with
catchment area of 124 000 km2. The correspondence of simulated and
observed hydrographs in the Vyatka River are considered as an indicator of
the accuracy of constructed fields of snow characteristics and as a measure
of effectiveness of utilizing satellite-derived SWE data for runoff
simulation. |
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