大同地区风沙特征及气候背景浅析

Analysis of Characteristics and Climate Background of Windblown Sand in Datong

本文利用大同地区30 a(1971年～2000年)气象资料及1990年～2004年逐日大风、沙尘暴观测资料,分析、总结了大同地区的风沙特征。风沙的季节分布主要集中在春季,西部、北部平川区多于东南山区,强度较大、破坏力较强而持续时间较长的大风沙尘暴多出现在12时～20时之间。

Using the climate data during 1971 -2000 and day- to- day gale and sandstorm data in 1990 2004, the characteristics and climate background of Windblown Sand in Datong is analyzed. The result shows that the windblown sand weather occurs frequently in spring than other seasons, more in the west and north than the south mountainous areas. The stronger, more destructive and longer- playing sandstorm weather often occurs during 12h - 20h more frequently than other time in a day.