摘要
运用距离权重反比法对重庆市气象自动观测站的雨量资料进行格点化处理,采用地球椭球体梯形面积的计算方法计算出暴雨面积,对重庆市2007—2016年的各次区域暴雨天气过程进行暴雨面积估测,计算出的暴雨面积能真实反映暴雨的影响范围,并充分证实了重庆市2014年的"9·17"区域暴雨是该年重庆市影响范围最大的暴雨。通过对暴雨面积的估测,分析重庆市近10 a的暴雨面积变化趋势,反映出其总体呈增大的趋势。
The rainfall data of Chongqing Meteorological Observatory was gridded using the inverse distance weighting method,and the storm area was calculated using the terrestrial elliptic trapezoid method. Base on the aforementioned algorithms,the rainstorm area was estimated during the heavy rains in Chongqing from 2007 to 2016. The result showed that the calculated rainstorm area could truly reflect the influential radius of rainstorms. It was also confirmed that the rainstorm on 17th September,2014 was the most influential one in that year. The changing trend of the heavy rain area in Chongqing in the past 10 years reflected its overall trend of increasing.
作者
李晶
陈贵川
王欢
朱岩
LI Jing;CHEN Guichuan;WANG Huan;ZHU Yan(Chongqing Meteorological Observatory,Chongqing 401147,China)
出处
《沙漠与绿洲气象》
2018年第3期70-75,共6页
Desert and Oasis Meteorology
基金
重庆市气象局业务技术攻关团队项目(YWGGTD-201604)
关键词
距离权重反比法
暴雨面积
变化趋势
inverse distance weighting
rainstorm area
change trend
