We would like to thank Paul Gross and the late Steve McCrary for making the radar measurements and Richard Scott for preparation of Figs. 4 and 5. Thanks also to Drs. Al Cooper and Dave Johnson, and two reviewers for their helpful comments. We are grateful to the many members of NCAR who participated in the Socorro 1987 field project. This work was supported by the National Science Foundation under Grants ATM-8914116, ATM-9115694, and ATM-9420333, and by the U.S. Air Force under Grant AFOSR-89-0450. One of us (JL) is grateful for support from the U.K. Meteorological Office (Hadley Centre).
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