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

Matthias Drusch, Eric F. Wood, Clemens Simmer

Research output: Contribution to journalArticle

34 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 languageEnglish (US)
Pages (from-to)879-882
Number of pages4
JournalGeophysical Research Letters
Volume26
Issue number7
DOIs
StatePublished - Apr 1 1999

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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