CAMEX-4 could not have been successful without the cooperation of a large number of agencies and individuals. We wish to thank all data producers for their support and cooperation. The ECMWF is acknowledged for the use of their analysis. This work is financially supported by NASA CAMEX Grants NAG8-1848 and NAG8-1537, and NSF Grant ATM-0108741. Dr. Ramesh Kakar, NASA program manager for atmospheric dynamic and remote sensing, provided the funding for CAMEX-4.
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