TY - RPRT TI - A Methodology for Surface Soil Moisture and Vegetation Optical Depth Retrieval Using the Microwave Polarization Difference Index AU - Owe, Manfred AU - deJeu, Richard AU - Walker, Jeffrey AU - Zukor, Dorothy J. PY - 2001 UR - https://ntrs.nasa.gov/citations/20010028709 ID - 20010028709 ER -