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| Titel |
Comparison of soil moisture fields estimated by catchment modelling and remote sensing: a case study in South Africa |
| VerfasserIn |
T. Vischel, G. G. S. Pegram, S. Sinclair, W. Wagner, A. Bartsch |
| 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 ; 12, no. 3 ; Nr. 12, no. 3 (2008-05-23), S.751-767 |
| Datensatznummer |
250010656
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| Publikation (Nr.) |
 copernicus.org/hess-12-751-2008.pdf |
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| Zusammenfassung |
| The paper compares two independent approaches to estimate soil moisture at
the regional scale over a 4625 km2 catchment (Liebenbergsvlei, South
Africa). The first estimate is derived from a physically-based hydrological
model (TOPKAPI). The second estimate is derived from the scatterometer on
board the European Remote Sensing satellite (ERS). Results show a good
correspondence between the modelled and remotely sensed soil moisture,
particularly with respect to the soil moisture dynamic, illustrated over two
selected seasons of 8 months, yielding regression R2 coefficients lying
between 0.68 and 0.92. Such a close similarity between these two different,
independent approaches is very promising for (i) remote sensing in general
(ii) the use of hydrological models to back-calculate and disaggregate the
satellite soil moisture estimate and (iii) for hydrological models to
assimilate the remotely sensed soil moisture. |
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