PROGRESS IN GEOGRAPHY ›› 2010, Vol. 29 ›› Issue (2): 145-150.doi: 10.11820/dlkxjz.2010.02.003

• Original Articles • Previous Articles     Next Articles

The Impact of Urbanization on Temperature in Kunming for the Last 48 Years

WANG Xuefeng1, ZHOU Deli2, YANG Pengwu1   

  1. 1. Yunnan Climate Center, Kunming 650034, China|2. Yunnan Meteorological Observatory, Kunming 650034, China
  • Online:2010-02-25 Published:2010-02-25

Abstract:

Selecting Kunming, Anning and Taihuashan stations to represent big city, small city and rural area over Low Latitude Plateau respectively, using the meteorological data of three observation stations from 1960 to 2007, this paper analyzed the variations of temperature by the development of different city sizes. The results show: (1) The mean temperature of the area near Kunming is rising remarkably and conformably in the 48 years. (2) Urbanization quickens the rising range of mean temperature. Urbanization effects reach 0.31℃/10a in big city and 0.09℃/10a in small city. The sharp rise happened in the late 1980s, when rapid urbanization emerged. (3) Urbanization quickens the rising of mean minimum temperature remarkably, but the influence on mean maximum temperature is not obvious. That leads diurnal temperature range to a remarkable decrease. Urbanization effects reach -0.49℃/10a in big city and -0.27℃/10a in small city. (4) Urbanization brings other climatic elements to remarkable variations too, such as the rise of extreme minimum temperature, the drop of relative humidity, and the decrease of frost days. But the influence of extreme maximum temperature is not obvious.

Key words: Kunming, temperature, test, urbanization, urbanization effect