亚洲内陆及其沿海地区爆发性气旋的统计特征

应用1965－1999年历史资料，对发生在亚洲及其沿海地区的爆发性气旋进行统计研究，得到了其时空分布、强度变化及其爆发时刻等各方面的若干统计特征。结果表明：35年中，爆发性气旋共出现136次，平均每年3.9次，且主要出现在冷季（10－3月）；其年际变化非常明显，最多的1987年出现11次。亚洲及其沿海地区的爆发性气旋的强度普遍较弱，无强爆发性气旋（≥2.0B）发生，且主要出现在沿海地区。平均来说，爆发性气旋在夜间发展强烈。这些结果对更进一步探索爆发性气旋的发展机制具有一定的意义。

Statistic Characteristics of Explosive Cyclones over Asia Land and Its Coast

Using the synoptic charts from 1965 to 1999,the explosive cyclones over Asia land and its coast are studied,some statistic characteristics,such as its spatial and temporal distribution, intensity changes,appearance time and so on,are obtained. In these years, there were 136 explosive cyclones,average 3.9 cyclones a year,but 11 cyclones in 1987. Most of them occurred in the cold season(Oct.-Mar.), The cyclone intensity which occurred over Asia and its coastal area were weaker than it occurred over ocean. Most of cyclones developed more strongly in night time. These results would have some significant role to investigate developmental mechanism of explo -sive cyclone.