The authors thank Jim Wang of NASA for providing MIR data through the TOGA COARE project, and Andy Heymsfield and Greg McFarquhar of NCAR for providing PMS 2DC data through CEPEX project. Discussions with Frank Evans while conducting this research were very helpful. Comments and suggestions from three anonymous reviewers were helpful for improving the quality of this paper, particularly the error analysis section. This research has been supported by NSF Grants ATM-9525801 and ATM-9910640, and NASA Grant NAG5-8647.
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