The Analysis of the Urban Climate in Chuxiong of Yunnan: Comparison of Urban Heat Island Effect in China
楚雄市城市气候特征分析--兼谈中国主要城市热岛强度对比分析

Chuxiong is a medium-sized city on the Yunnan-Guizhou Plateau. The data (1959-2000) of Chuxiong and Nanhua observatories of Yunnan are compared in this paper. By Mexh wavelet analysis and comparison of the heat island effect of Chuxiong with Shanghai etc., the intensity of heat island for different cities has been examined. At the same time, the law for the annual and daily intensities of heat island in Chuxiong city has been found. The results indicate that the urban heat island effect of Chuxiong has become more and more obvious since the 1980s, with evident seasonal variations. The different variation laws are summarized by comparing the heat island effect of Chuxiong with Shanghai etc. The heat island effect is influenced by different backgrounds. It is revealed that with urban expansion of Chuxiong, the relative humidity and absolute humidity in Chuxiong have gradually reduced, and the effect of dry island has gradually appeared. The trend of dry island is intensifying in Chuxiong.