锡林郭勒地区沙尘暴时空变异与气候特征分析

Study on the temporal and spatial distribution features of the duststorms and climate in Xilinguole region

利用1971-2000年锡林郭勒地区15个台站的气象资料,分析近30年内蒙古锡林郭勒地区沙尘暴的时空变异及其与气侯特征之间的关系,在对沙尘暴形成的诸多气候因子中,着重分析了大风,降水,温度等要素对其的影响。结果表明:锡林郭勒地区沙尘暴呈现明显的西部多,东部少的趋势;90年代沙尘暴发生日数减幅最大;沙尘暴是受多种气候因子共同影响,是一个多维的复杂问题,其中沙尘暴的发生与大风日数相关系数达90%以上。

Based on the meteorogical date from around 15 meteorogical stations during 1971 -2000, the features and time and space changes of duststorms in Xilin Gol league in Inner Mongolia were analyzed. Among factors of impacting on duststorms, strong wind, rain and temperature were chosen. The results showed that days of duststorms in west was more than in east, and reduced more quickly in 90th. There were many climate factors which influenced the frequency and strength of the duststorms in Xilin Col league in Inner Mongolia, among the influ- ence of climate conditions were most obvious, strong wind and rain were the most important control factors for the seasonal cycle of duststorms, and temperature was one of the most dominant factors impacting inter - annual variability.