Journal article

Multi-scale spatial correlation and scaling behavior of surface soil moisture

D Ryu, JS Famiglietti

GEOPHYSICAL RESEARCH LETTERS | AMER GEOPHYSICAL UNION | Published : 2006

Abstract

The scaling behavior of surface soil moisture variance is presented across spatial scales of observation from 1 × 1 km2 to 140 × 140 km2. Semi-variograms were used to analyze the spatial correlation in remotely sensed soil moisture data from SGP97. Results indicate that a nested correlation structure exists within regional scale fields. Three representative semi-variograms were chosen to calculate the scaling of soil moisture variance with increasing support scale. While previous research at smaller scales (<1 km2) revealed that soil moisture variance follows a power law decay with increasing support area, we show that in the presence of significant spatial correlation at the larger scales s..

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University of Melbourne Researchers