Monday, 14 May 2001: 3:45 PM
Unique, high-resolution and coincident in situ turbulence data, and
RADARSAT-derived SAR imagery of the ocean surface were captured during the
Shoaling Waves Experiment, sponsored by the Office of Naval Research (ONR).
Of particular interest are two cases where the aircraft flew from what
appears to be a high wind area to a region of low winds. An outstanding
problem in scatterometry and SAR imagery is the determination of the minimum
wind speed necessary to produce measurable radar backscatter, and how that
may be effected by the air/sea temperature difference. While studied
extensively in the laboratory under neutral conditions, there have been only
two (and only very recent) published field reports that demonstrate that
minimum wind speed, again under near neutral conditions. In this talk we
present preliminary analyses of these data sets whose attempt is to better
determine the minimum wind speed necessary to produce measurable radar
backscatter.
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