博州雷暴的时间变化和周期  

The Changes of Thunderstorms Time and Cycle in Bole Region

作　　者：刘军[1] 陈万江 杨新[1] 

机构地区：[1]新疆防雷减灾中心,新疆乌鲁木齐830002 [2]温泉县气象局,新疆温泉833500

出　　处：《沙漠与绿洲气象》2009年第2期35-37,共3页Desert and Oasis Meteorology

摘　　要：利用1961—2000年博州4个气象站雷暴天气的观测资料,分析了雷暴的气候特征。分析表明,博州多年年雷暴日数20～52d,年雷暴日数平原地区较少,高山地区较多,雷暴天气集中出现在夏半年5—8月。温泉雷暴天气的高发时段15—21时,精河高发时段17—23时,阿拉山口高发时段16—24时。温泉、精河和阿拉山口雷暴持续时间以30min为主。博乐和阿拉山口40a内年雷暴日数线性减少,两站年雷暴日数在1979年发生突变。博州雷暴日数年际变化具有6～9a的震荡周期。This paper analyzed the climatic characteristics of thunderstorms that based the observatory data by four weather stations from 1961 to 2000. The analysis showed that the annual number of days of thunderstorms is 20 to 52 days in Bole Region. The numbers of thunderstorms days are less in the plain areas and more in mountain areas. Thunderstorm weather focused in summer from May to August. The high-frequency time of thunderstorm is at 3p.m. to 9p.m. 5p.m. to 1 lp.m. And 4p.m. to midnight in Wenquan, Jinghe and Alashankou respecitvely. Thunderstorms in Wenquan, Alashankou and Jinghe usually lasted 30 minutes. The thunderstorms days have reduced in 40 years in Bole and Alashankou, and the abrupt change happened in 1979. The inter-annual change of the number of thunderstorms days has the oscillation cycle with 6 to 9-year.

关 键 词：雷暴 变化趋势 突变 周期 

分 类 号：P427[天文地球—大气科学及气象学]