Application Analysis of a Set of Radar Warning Indicators in Short-time Severe Rainfall Process in 2013

Using a set of radar warning indicators,it is inspected and corrected the warning indicators by using examples of short-time severe rainfall process occurred in 2013 in Sichuan Basin,the results show that,1) whether the specific observed station,or Spatial distribution of short-time severe rainfall,warning index is feasible for early warning short-time severe rainfall and early warning of time effects is better in 0-2h.2) analysis of SWAN products showed,to produce more than 20mm/h of short-time severe rainfall,meet the warning index echo need to monitor more than three times 6min,usually the strong echo lasts longer,the rainfall is greater.3) In addition to the successful early warning rate is about 57.1% at 15:00 on July 4th,2013,other examples of early warning indicators of future 1h short-time severe rainfall prediction success rate above 80%,false rate is below 20%.In the false station,echo of the SWAN system puzzle and radar echo of monostatic radar detection had some errors,especially in low elevation angle of radar.