摘要
对新疆伊犁地区10个气象观测站1959—2008年的雷暴逐日观测资料进行了统计分析,总结出了伊犁地区雷暴日变化规律和特征,并对伊犁地区进行了雷电防护等级划分。结果表明:伊犁地区为雷暴多发区,年平均雷暴日数为17.5～86.1天,雷暴日数总的趋势缓慢减少,有年代际变化。雷暴主要集中在3—11月,2月下旬会出现雷暴,11月中旬雷暴会完全结束,1月、12月一般无雷暴。月平均雷暴日数在3—6月逐渐增多,7一11月逐渐减少。伊犁地区可以划分4个雷电防护等级:昭苏县1级;特克斯县2级;伊宁市、尼勒克县、霍城县、霍尔果斯口岸、巩留县、新源县、伊宁县3级;察布查尔县4级。
A statistical analysis is made of the daily observation data of thunderstorms from 10 weather stations in Yili from 1959 to 2008;the variation regularity and features of thunderstorm days are summarized;and regional division is conducted.The results show that the Yili area is one of areas attacked most frequently by thunderstorms with the annual mean number of thunderstorm days being 17.5 to 86.1 days,but the total trend of thunderstorm days reduces gradually with inter-decadal oscillation. Thunderstorms start to occur from the last 10 days of February,most frequently between March and November,and end in the second 10 days of November.There seldom occur thunderstorms in January and December in Yili.Monthly mean thunderstorm days gradually increase from March to June and decrease from July to November.Yili can be divided into four areas according to lightning protect grades：Grade 1, Zhaosu County;Grade 2,Tekesi County;Grade 3,Yining,Nileke,Huocheng,Huo＇ erguosi port, Gongliu,Xinyuan County;Grade 4,Yining County,Chabucha＇er County.
出处
《气象科技》
北大核心
2010年第6期810-813,I0013,共5页
Meteorological Science and Technology
基金
新疆少数民族科技人才特殊培养计划科研项目"新疆雷电信息系统研究"(200923119)资助
关键词
伊犁
雷暴日
防护等级
Yili
thunderstorm day
lightning
protection grade
