This work was partially supported by the NASA Interdisciplinary Science Program at Goddard Space Flight Center under WBS-51-291-01-C7. The ISCCP-DX data were obtained from the International Satellite Cloud Climatology Project data archives at the NASA Langley Research Center Atmospheric Sciences Data Center. The SSM/I data were produced by Remote Sensing Systems and sponsored by the NASA Pathfinder Program for early Earth Observing System (EOS) products.
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