
Jie Tang and Xiaotu Lei were supported by the Key Program for International S&T Cooperation Projects of China (No. 2017YFE0107700), National Natural Science Foundation of China (No. 41475060 and 41775065) and the ESCAP/WMO EXOTICCA Project. Jun Zhang was supported by NOAA grant NA19OAR0220186 and ONR grant N00014-20-1-2071 of the United States of America.