CSU-CHILL polarimetric radar measurements from a severe hail storm in eastern Colorado
Polarimetric radar measurements made by the recently upgraded CSU-CHILL radar system in a severe hailstorm are analyzed permitting for the first time the combined use of Zh, ZDR, linear depolarization ratio (LDR), KDP, andρhv to infer hydrometeor types. A chase van equipped for manual collection of hail, and instrumented with a rain gauge, intercepted the storm core for 50 min. The period of golfball-sized hail is easily distinguished by high LDR (greater than or equal to 218 dB), negative ZDR (less than or equal to 20.5 dB), and low ρhv (less than or equal to 0.93) values near the surface. ...
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