Assessing the potential of SWVI (Soil Wetness Variation Index) for hydrological risk monitoring by means of satellite microwave observations
Other literature type
Leo, E. V.
(issn: 1680-7359, eissn: 1680-7359)
In the last years satellite remote sensing applications in hydrology have
considerably progressed. A new multi-temporal satellite data-analysis
approach has been recently suggested in order to estimate space-time changes
of geophysical parameters possibly related to the increase of environmental
and hydro-geological hazards. Such an approach has been already used both
for flooded area mapping (using AVHRR data) and for soil wetness index
estimation (using AMSU data).
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In this work, a preliminary sensitivity analysis of the proposed Soil
Wetness Variation Index (<I>SWVI</I>) is made in the case of low intensity
meteorological events by the comparison with hydrological (precipitation)
data. This analysis, as a first step of a more complex work in progress, is
targeted to a first evaluation of the reliability of the <I>SWVI</I> in describing
soil response to precipitations of different duration and intensity.