气象与环境学报Issue(1)：36-42,7.DOI:10.3969/j.issn.1673-503X.2014.01.006
冰雹指数的误差分析及其在冰雹云识别中的应用
Error analysis of hail index and its application to hail cloud identification
摘要
Abstract
The effects of several important factors on the error of hail index were analyzed by a simulation test method.Using the measurement indexes of probability of detection (POD),critical success index (ICS)and false a-larm ratio (RFA),the 25 hail storms and 72 non-hail storms among 12 hail processes during March of 2008 to July of 2012 were assessed based on the new generation Doppler weather radar data in Zunyi City.The results indicate that H0 ,the vertical profile of reflectivity factor and distance between the target and radar have great influence on POSH error,while Hm20 has insignificant influence.There are high RFA and low ICS when POH are used to recog-nize hail cloud.Identification effect of POSH is better than that of POH.Increasing threshold can enhance ICS and decrease RFA.The POD is low when the threshold is larger.POSH=70 is the best threshold,with which high POD and ICS and low RFA can be obtained.POD has no change when POSH and VIL>20 kg·m-2 are used together to i-dentify hail cloud,but lower RFA and higher ICS can be obtained when the threshold of POSH is less than 90.关键词
高原山区/冰雹指数/参数修正Key words
Highland mountainous area/Hail index/Parameter correction分类
天文与地球科学引用本文复制引用
郭晓超,肖蕾,李明元,姚正兰,姚成勇..冰雹指数的误差分析及其在冰雹云识别中的应用[J].气象与环境学报,2014,(1):36-42,7.基金项目
贵州省科技计划“贵州省交通安全气象风险区划及应用平台研究-以遵义为示范点”（黔科合SY字（2012）3054号）和遵义市气象局科研项目“遵义市新一代多普勒天气雷达在人工增雨防雹中的应用研究”共同资助。 （）
