DECOMPOSITION OF THE SMAP RADAR CHANNELS AND RELATION TO SURFACE SOIL MOISTURE AND VEGETATION

摘要

Decomposition is performed for the 4×4 SMAP radar channel covariance matrix and the correlation between resulting components, surface soil moisture and vegetation is examined. Globally, the first principal component is the most dominant and the correlation coefficients with respect to soil mortise is highest (R~2 ≥ 0.8) in regions with fractional ground cover and sufficient temporal dynamics of soil moisture.