This work was supported by the Environmental Science Division of the U.S. Department of Energy as part of the Atmospheric Radiation Measurement Program. The author would like to thank R. A. Kropfli, T. Uttal, B. E. Martner, R. F. Reinking, B. W. Orr, and I. Gultepe for valuable discussions through the course of thework. B. W. Bartram and K. A. Clark were operating the ETL Ka-band radar, and J. B. Snider provided the radiometeric data.
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