Retrieval of Cloud Water Variables by 1D-Var Algorithm Qun-Bo Huang, Wei-Min Zhang, Bai-Nian Liu, De Xing, Xiang Xing, Teng-Ling Luo, Wei-Feng Wang and Xiao-Gang Zhang ITM Web Conf., 12 (2017) 03007 Published online: 05 September 2017 DOI: 10.1051/itmconf/20171203007