阳泉城市热岛效应及气象因素分析

Analysis on Urban Heat Island Effect and Its Meteorological Factors in Yangquan

根据阳泉市气象站点37年的气候资料,分析了阳泉城市热岛效应的年、季、月的变化,自1972～2008年,阳泉市城市热岛效应存在且随时间推移呈现增大的趋势。市区和郊区年平均温差为1.38℃,2004年温差最大为1.771℃,1973年市区与郊区温差最小,仅为1.279℃。阳泉城市热岛效应冬季最强,夏季最弱。利用灰色关联度分析法,分析了影响阳泉城市热岛效应的主要气象因子,影响顺序为:相对湿度>日照时数>降雨量>风速。

Based on 37years meteorological station climatic data in Yangquan, the annual, season and monthly variation of urban heat island effect were respectively analyzed. The result shows that the urban heat island effect exists and present increasing trend with the passage of time. Urban and rural average annual temperature difference was 1.38℃, the maximum difference is up to 1.771℃ in 2004, the minimum difference was only 1.279 ℃ in 1973. The heat island effect is strongest in winter, weakest in summer. The main meteorological factors affecting yangquan city heat island effect was analyzes with grey correlation analysis method, the influence order： relative humidity〉sunshine duration〉wind speed〉rainfall.