Decomposition of SMAP polarization ratio into surface soil moisture and vegetation dynamics - Shangnan Li; Ruzbeh Akbar; Tianjie Zhao; Hui Lu; Somayyeh Talebi; Haiteng Weng; Zengyan Wang; Kaighin McColl; Jiancheng Shi; Dara Entekhabi (2017 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017, Fort Worth, TX, USA, July 23-28, 2017, 2017)