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| Titel |
Near-real time ASCAT soil moisture data for hydrological applications in Europe |
| VerfasserIn |
S. Hasenauer, A. Jann, B. Zeiner |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250024110
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| Zusammenfassung |
| Soil moisture is a highly variable climate parameter, which is observed at scales ranging from local to regional and which is assessed from a variety of sensors. The retrieval methods differ mainly in geographical resolution, coverage and sensor system, with scatterometer and Synthetic Aperture Radar (SAR) systems being well-suited for hydrological applications.
In order to serve the needs of the hydrology community, the Satellite Application Facility on Support to Operational Hydrology and Water Management (H-SAF) has the aim to produce new satellite derived soil moisture products (amongst a range of other products for precipitation and snow) on an operational level for European hydrological users.
This work introduces the product generation and product characteristics of the value-added surface soil moisture products, derived from the Advanced Scatterometer Instrument (ASCAT) on-board the METOP satellite. At the end of the development phase, users of H-SAF will benefit from an operational, near-real time surface soil moisture product with 1 km resolution over Europe, derived from the 25 km ASCAT product. It is developed by TU Wien following a statistical disaggregation approach, where the strong relationship between the mean soil moisture content of a small-scale local area (derived from ENVISAT ASAR data) and its regional-scale mean (derived from METOP ASCAT data) is used. The product is foreseen to be generated operationally at the Austrian Central Institute for Meteorology and Geodynamics (ZAMG) in Vienna. |
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