This research is partially supported by NASA Grants NAGW-5195 under NASA’s New Investigator Program, NCC8-141, and NAG5-7270. Xiang Li is supported under NASA’s Earth System Science Fellowship program. Sundar A. Christopher thanks Drs. Yoram J. Kaufman and Tim Suttles for their continuing encouragement. P. Hobbs was supported by the Joint Institute for the Study of the Atmosphere and the Ocean (JISAO) under NOAA Cooperative Agreement NA67RJ0155.
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