Near Real-time Flood Detection and Mapping
Investigators: Fritz Policelli (NASA/GSFC)
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Abstract
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We propose to conduct a feasibility study on the potential to develop a new
automated flood monitoring tool, and to link it to existing experimental
flood detection techniques to provide a highly reliable global capability
for integrated flood detection, measurement, and monitoring for the benefit
of the International Federation of Red Cross and Red Crescent Societies (IFRC)
and other end-users.
Existing remote sensing-based efforts to detect flood conditions in near real time
rely on the use of
precipitation measurements in hydrological models ,
or the use of passive microwave measurements of river surface area to sense
river discharge changes.
There is evident merit to each of these existing approaches, and synergetic use
may provide a more accurate and robust assessment of flood conditions.
Furthermore, despite progress in this area, there is still typically a substantial
time lag between the time a flooding condition is detected and the availability
of satellite based flood inundation maps.
The focus of this study will be to address this by
1) examining the feasibility of automating the sub-setting and delivery of
moderate resolution satellite data to provide input for flood mapping,
2) testing the feasibility of triggering the process with a combination of the
currently available global hydrological analysis and satellite based river
discharge measurements, and 3) developing an automated process for producing
the flood inundation maps.
An additional aspect of this proposed feasibility study is to examine the
possibility of utilizing the produced flood maps in the validation and
calibration of the flood potential detection products.
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