近40a来塔里木盆地沙尘暴气候时空变化分析

本文利用1961—2000年塔里木盆地22个气象站的气象实测资料,分析了近40年塔里木盆地沙尘暴天气的时空分布特征。结果表明:塔里木盆地沙尘暴日数从60年代至90年代,总的趋势是在波动中下降的,高发年代多在20世纪70年代和80年代,90年代沙尘暴的发生明显减少;塔里木盆地沙尘暴天气发生的日数有2个明显的高发区,即以喀什、阿图什的塔东地区和以策勒、和田为中心的塔南地区;塔里木盆地沙尘暴天气对于新疆地区气候的变化响应显著,与平原区的降水和温度相关性较好。

Spatial-Temporal Distribution of Sandstorm Weather Trend in Tarim Basin in Recent 40 Years

Based on the available high-quality surface-meteorlogical observation data from 22 stations in Trim basin from 1961 to 2000,investigation has been conducted for the temporal and spatial distribution characteristics, especially for interdecadal change and long-term trend of sandstorm in Trim basin in recent 40 years. According to the analyses on number of sandstorm's days, the following results are noted: On the whole of Tarim basin, annual frequency of sandstorm reduced from 1961 to 2000;The most frequently occurred region of sandstorm is in the east and south Tarim basin; The climate shifts to warm humid have produced a certain impact for sandstorms.