Zhuang Zhou Shaojie Zhao Zhizhong Chen Lingmei Jiang Comparison of different downscaling methods of soil moisture in Luan he Watershed. 1980-1983 2015 IGARSS https://doi.org/10.1109/IGARSS.2015.7326185 conf/igarss/2015 db/conf/igarss/igarss2015.html#ZhouZCJ15