TY - JOUR
T1 - Up-scaling effects in passive microwave remote sensing
T2 - ESTAR 1.4 GHz measurements during SGP '97
AU - Drusch, Matthias
AU - Wood, Eric F.
AU - Simmer, Clemens
PY - 1999/4/1
Y1 - 1999/4/1
N2 - 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 diff erences between mean soil moisture derived from high reso lution (800 by 800m2) 1.4 GHz brightness temperatures and soil moisture calculated from mean brightness tempera tures 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 [cm3cm3].
AB - 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 diff erences between mean soil moisture derived from high reso lution (800 by 800m2) 1.4 GHz brightness temperatures and soil moisture calculated from mean brightness tempera tures 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 [cm3cm3].
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U2 - 10.1029/1999GL900150
DO - 10.1029/1999GL900150
M3 - Article
AN - SCOPUS:0033117413
SN - 0094-8276
VL - 26
SP - 879
EP - 882
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 7
ER -