摘要
根据新疆地面气象记录月报表 ,整理出 196 1— 1999年 39a北疆 4 0个气象观测站的沙尘暴天气现象资料并进行统计分析 ,给出北疆地区沙尘暴天气的时空分布特征。结果表明 :北疆沙尘暴的高发区在古尔班通古特沙漠 ,沙漠南缘、天山北麓发生的沙尘暴多于其他周边地区 ;沙尘暴集中出现在 4— 8月 ,多发时段在 15— 2 3时 ,傍晚是活动高峰 ;沙尘暴持续时间多数在 1h以内 ,最长可持续 16h。
The temporal-spatial distribution characteristics of sandstorm that occurred in North Xinjiang has been revealed by counting and analyzing 39-year sandstorm date collection(1961—1999) gathered from 40 weather stations in North Xinjiang.The results show that in North Xinjiang,the sandstorms occur most frequently in Gurbantuguter desert,more frequently in the southern periphery of the desert than in the others.The annual variation shows that the sandstorm usually occurs during the months from April to August.The daily variation shows that the occurrence of sandstorm is more frequent during 15—23 o'clock in local time.The duration of most sandstorms in North Xinjiang is within one hour or so.The longest persistence time is 16 hours.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第5期681-687,共7页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
高等学校重点实验室访问学者基金
