This study was the subject of a Ph.D. dissertation by one of the authors (Scott 1999). The authors are deeply indebted to Steve McCrary (deceased) for his dedicated work on the dual-polarization radar. The work was supported in part by the U.S. Air Force Office of Scientific Research, under Grants AFOSR-89-0450, F49620-92-J-0320 (AASERT), and F49620-96-1-0304. Partial support was also provided by the New Mexico Universities Collaborative Research Program (NUCOR) of Los Alamos National Laboratory. The authors thank the reviewers for their constructive comments, and A.R. Holt for his stimulating discussions and for providing results from his studies. We also thank V.N. Bringi and V. Chandrasekar for their assistance in resolving the discrepancy in the ρHV–LDR relations.
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