Physics
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..879d&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 7, p. 879-882
Physics
19
Hydrology: Soil Moisture, Meteorology And Atmospheric Dynamics: Remote Sensing
Scientific paper
Passive microwave radiation measurements over sparsely vegetated surfaces during the Southern Great Plain Experiment are used to determine spatial up-scaling effects. For various distributions of geophysical parameters, the differences between mean soil moisture derived from high resolution (800 by 800m2) 1.4 GHz brightness temperatures and soil moisture calculated from mean brightness temperatures at larger scales are compared. For spatial resolutions of 31.42km2, the effects of these non-linearities in radiative transfer at 1.4 GHz do not yield differences in estimated volumetric surface soil moisture (0-5 cm) exceeding 0.02 [cm3cm-3].
Drusch Matthias
Simmer Clemens
Wood Eric F.
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