The Analysis of the Urban Climate in Chuxiong of Yunnan: Comparison of Urban Heat Island Effect in China

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  • 1. Department of Geography, Chuxiong Normal College, Chuxiong 675000, China;
    2. Chuxiong Meteorological Bureau of Yunnan, Chuxiong 675000, China;
    3. Department of Geography, Open Lab. of Urban Environment Remote Sensing and Digital Technology, Ministry of Education, East China Normal University, Shanghai 200062, China

Received date: 2002-10-12

  Revised date: 2003-05-25

  Online published: 2003-09-25

Abstract

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.

Cite this article

HE Ping, LI Hongbo, SHU Jiong, LU Xiaoqin, SUN Juan . The Analysis of the Urban Climate in Chuxiong of Yunnan: Comparison of Urban Heat Island Effect in China[J]. Acta Geographica Sinica, 2003 , 58(5) : 712 -720 . DOI: 10.11821/xb200305009

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