农学学报
農學學報
농학학보
JOURNAL OF AGRICULTURE
2015年
10期
113-117
,共5页
雷暴日数%变化特征%喀左
雷暴日數%變化特徵%喀左
뇌폭일수%변화특정%객좌
Thunderstorm Days%Variation Characteristics%Kazuo
为了给雷电预测及防雷减灾提供有利科学依据,加强做好对雷电的监测,使人工防雹站点布局更加合理,增强防雹增雨效果。利用1959—2014年喀左县常规地面观测资料,分析了喀左县雷暴的气候特征。结果表明:喀左县年平均雷暴日数为28.1天。20世纪90年代至2014年雷暴日数呈逐渐下降趋势,并有明显的季、月变化;4—6月迅速增多,7—9月变化逐渐减少,10—11月迅速减少。雷暴13:00—20:00时发生频率最高。雷暴日出现最多的年份在1991年(41天),最少的年份为1961年(12天);喀左县雷暴日数月变化呈单峰型,其峰值位于6月;平均雷暴初日为4月23日,平均雷暴终日为10月6日;平均雷暴持续期为165.8天;因此,研究喀左县雷电的特征变化及活动规律,开展防雷减灾、加强雷电灾害防御、防雹增雨等具有十分重要的意义。
為瞭給雷電預測及防雷減災提供有利科學依據,加彊做好對雷電的鑑測,使人工防雹站點佈跼更加閤理,增彊防雹增雨效果。利用1959—2014年喀左縣常規地麵觀測資料,分析瞭喀左縣雷暴的氣候特徵。結果錶明:喀左縣年平均雷暴日數為28.1天。20世紀90年代至2014年雷暴日數呈逐漸下降趨勢,併有明顯的季、月變化;4—6月迅速增多,7—9月變化逐漸減少,10—11月迅速減少。雷暴13:00—20:00時髮生頻率最高。雷暴日齣現最多的年份在1991年(41天),最少的年份為1961年(12天);喀左縣雷暴日數月變化呈單峰型,其峰值位于6月;平均雷暴初日為4月23日,平均雷暴終日為10月6日;平均雷暴持續期為165.8天;因此,研究喀左縣雷電的特徵變化及活動規律,開展防雷減災、加彊雷電災害防禦、防雹增雨等具有十分重要的意義。
위료급뇌전예측급방뢰감재제공유리과학의거,가강주호대뇌전적감측,사인공방박참점포국경가합리,증강방박증우효과。이용1959—2014년객좌현상규지면관측자료,분석료객좌현뇌폭적기후특정。결과표명:객좌현년평균뇌폭일수위28.1천。20세기90년대지2014년뇌폭일수정축점하강추세,병유명현적계、월변화;4—6월신속증다,7—9월변화축점감소,10—11월신속감소。뇌폭13:00—20:00시발생빈솔최고。뇌폭일출현최다적년빈재1991년(41천),최소적년빈위1961년(12천);객좌현뇌폭일수월변화정단봉형,기봉치위우6월;평균뇌폭초일위4월23일,평균뇌폭종일위10월6일;평균뇌폭지속기위165.8천;인차,연구객좌현뇌전적특정변화급활동규률,개전방뢰감재、가강뇌전재해방어、방박증우등구유십분중요적의의。
In order to provide favorable scientific basis for lightning forecasting, lightning prevention and disaster reduction, make a reasonable layout of artificial hail suppression stations, as well as reinforce the effect of hail suppression and rainfall enhancement, the author analyzed the climate features of thunderstorms in Kazuo County based on the county’s conventional surface observation data from 1959 to 2014. The results showed that the annual average thunderstorm days in Kazuo County was 28.1 d, indicating a gradual decrease from the 1990s to 2014 with distinct seasonal and monthly changes which were characterized by a rapid increase from April to June, a gradual decrease from July to September, and a rapid drop in October and November. The highest frequency of thunderstorm emerged between 13:00 and 20:00. The year 1991 witnessed the largest number of thunderstorm days, adding up to 41 d, and the least thunderstorm days appeared in 1961 (12 d). The monthly changes of thunderstorm days in Kazuo County presented a unimodal type with its peak in June, the average starting day was April 23rd, the average ending day was October 6th, and the average duration was 165.8 d. Therefore, studying the variation characteristics and activity patterns of the thunderstorm is of vital significance for strengthening lightning prevention, hail suppression and rainfall enhancement.