江西省闪电定位资料与人工观测雷暴日的对比分析

Comparison of Lightning Location Data and Artificial Observation of Thunderstorm Days in Jiangxi Province

利用江西省81个气象站1984—2013年雷暴日观测资料和2010—2019年闪电定位资料,对比分析了3—19 km半径下闪电日数与雷暴日数的关系。结果表明,全省范围内闪电日数与雷暴日数相等的监测半径置信区间为10.1—11.5 km,监测半径为10 km和11 km时全省闪电日数与雷暴日数差异不显著,相对偏差最小。聚类分析表明,全省闪电日数与雷暴日数相等的半径可分为5个区域:R1—R5,对应闪电日数与雷暴日数相等的半径均值分别为14.5、9.4、9.6、10.5、10.2 km。

Based on the artificial observation of thunderstorms days at 81 meteorological stations in Jiangxi Province from 1984 to 2013 and the lightning location data from 2010 to 2019,the relationship between lightning days and thunderstorm days under radius of 3-19 km was comparative analyzed.The result indicated that the confidence interval for the radius of lightning days and thunderstorm days in Jiangxi province was 10.1 to 11.5 km,and the difference between lightning days and thunderstorm days in the province was not sig-nificant when the monitoring radius was 10 km and 11 km,with the smallest relative deviation.Cluster analysis showed that the radius equal to the number of lightning days and thunderstorm days in the province can be divided into five regions(R1-R5),with the corre-sponding mean radii of 14.5,9.4,9.6,10.5 and 10.2 km,respectively.