阳泉市城市热岛效应特征分析

利用阳泉市3个国家级气象站资料分析了阳泉市城市热岛效应的年际变化、季节变化、月变化和日变化特征，结果表明：阳泉市存在弱的城市热岛效应，1972年-2011年平均热岛强度0．554℃。阳泉市热岛强度冬、秋季强，春、夏季弱；12月最强，5月最弱；阳泉市热岛强度整体呈显著上升趋势，热岛强度的增加主要是由于夏季热岛强度的增强。热岛强度日变化表现为12时最小，从傍晚开始随降温逐渐增大，到早晨气温降到最低时最大，日出之后迅速减小；2008年-2011年最强热岛强度出现在2010年1月14日08时达7．9℃。阳泉市主要城市发展因子与霾日数、气温呈显著正相关，在目前的经济发展水平条件下，城市化发展可能使阳泉城市温度增高，城市绿地面积的增加可能对热岛效应有缓解。

Analysis on the Characters of the Urban Heat Island Effectin Yangquan City

Based on the three national meteorological stations data, the interannual variability, seasonal, monthly and daily variations of the urban heat island （UHI） in Yangquan city has been analyzed. The results showed that a weak urban heat island effect existed in Yangquan city. In 1972-2011, the average temperature was 0.554℃ The UHI intensity in winter and autumn was stronger than in spring and summer, while strongest in December, and weakest in May. The overall intensity had a significant upward trend due to the strengthening of the summer heat island intensity. The daily variation of UHI intensity began to increase from evening and decrease rapidly after sunrise, while it reached its minimum at 12：00 and the maximum when the temperature dropped to the lowest in the morning. From 2008 to 2011, the stron of urbanization in Yangquan gest had level of the economic developmen UHI intensity appeared at 08：00 in January 14, 2010, up to 7.9℃. The main factors a po t, the sitive relationship with the haze days urbanization development could heat of the urban green space might alleviate the UHI and the temperature. Under the currenl up the Yangquan City, and the increasing