基于自动站资料的太原城市热岛研究

The urban heat island effect in Taiyuan

利用太原市所属72个自动气象观测站气温观测资料,采用城郊气温对比等方法对太原市的城市热岛效应进行了研究。分析表明:1)太原热岛效应秋冬季节较强,春夏季节较弱。2)太原市区热岛强度有显著的日变化特征,子夜至凌晨最强,午后最弱。3)太原4个季节的热岛陡崖带形状和面积差别不大,说明太原特殊地形条件下城市热岛效应可能主要受人口、经济、地形等基本固定的因素影响。4)太原热岛最强区和人口密集区高度重合,热岛空间分布与太原的森林植被覆盖特征相似。

Based on the air temperature data from 72 automatic weather stations in Taiyuan,The urban heat island（UHI） effect in Taiyuan was studied by comparison of the temperatures between rural area and urban area.The analysis showed that： 1） The intensity of the UHI was stronger in autumn and winter and weaker in spring and summer.2） The intensity of the UHI had significant diurnal variation,it was the strongest from the midnight to the morning and the weakest in the afternoon.3） The shape and the area of the cliff zones of heat island in four seasons were similar,these showed that the UHI was mainly affected by some basic fixed factors such as population,economy and topography etc.4） The distribution of the strongest heat island areas coincided highly with the concentrated population areas.The distribution of the UHI was similar to the characteristics of the forest coverage in Taiyuan.