Up-scaling effects in passive microwave remote sensing: ESTAR 1.4 GHz measurements during SGP '97

Matthias Drusch; Eric F. Wood; Clemens Simmer

doi:10.1029/1999GL900150

Up-scaling effects in passive microwave remote sensing: ESTAR 1.4 GHz measurements during SGP '97

Matthias Drusch, Eric F. Wood, Clemens Simmer

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36 Scopus citations

Abstract

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].

Original language	English (US)
Pages (from-to)	879-882
Number of pages	4
Journal	Geophysical Research Letters
Volume	26
Issue number	7
DOIs	https://doi.org/10.1029/1999GL900150
State	Published - Apr 1 1999

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

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10.1029/1999GL900150

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title = "Up-scaling effects in passive microwave remote sensing: ESTAR 1.4 GHz measurements during SGP '97",

abstract = "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].",

author = "Matthias Drusch and Wood, {Eric F.} and Clemens Simmer",

note = "Publisher Copyright: Copyright {\textcopyright} 1999 by the American Geophysical Union.",

year = "1999",

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doi = "10.1029/1999GL900150",

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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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Up-scaling effects in passive microwave remote sensing: ESTAR 1.4 GHz measurements during SGP '97

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