CAJ | 학술논문

利用1961—2010年哈密地区50年雷暴天气资料,统计分析了雷暴日数的变化特征及时空分布情况,结果表明哈密地区雷暴日数呈逐年下降趋势,尤其近10年下跌趋势很大,在过去的50年中各测站雷暴日数变化速率-0.32～-2.00d/10年。1年中雷暴的活动期在3～10月,活跃期5～8月的平均雷暴日数占全年的90.0%以上。1日中雷暴多发生在正午到前半夜。年雷暴日数的空间分布特征为南部明显少于北部,且雷暴日数随海拔升高而递增。
이용1961—2010년합밀지구50년뇌폭천기자료,통계분석료뇌폭일수적변화특정급시공분포정황,결과표명합밀지구뇌폭일수정축년하강추세,우기근10년하질추세흔대,재과거적50년중각측참뇌폭일수변화속솔-0.32～-2.00d/10년。1년중뇌폭적활동기재3～10월,활약기5～8월적평균뇌폭일수점전년적90.0%이상。1일중뇌폭다발생재정오도전반야。년뇌폭일수적공간분포특정위남부명현소우북부,차뇌폭일수수해발승고이체증。
This paper used the thunderstorm material from 1961 to 2010 at Hami district,conducted a statistical analysis on the change characteristics of the number of thunderstorm days,and space-time distribution.The result showed the number of thunderstorm days in Hami district reduced year by year,especially in the past 10 years.Change rate of thunderstorm days in the past 50 years at each station was-0.32 ~-2.00 d/10 a.The active period in a year was in March to October,active period in May to August accounted for 90.0% of the annual number of thunderstorm above.Thunderstorm most occurred at noon to midnight.The space distribution feature of the number of thunderstorms days was south obviously less than north,and the number of thunderstorm days increased with elevation increase.