ON TEMPERATURE CHANGES OF SHANGHAI AND URBANIZATION IMPACTS

To understand how temperature varies in urban Shanghai under the background of global climate change and how it is affected by urbanization,the Shanghai temperature responses to global warming were analyzed,and then the temperature trends of urban and suburb stations under different climatic backgrounds were obtained. The urbanization effects on temperature were studied by comparing urban stations to suburb stations,the relationship between urbanization variables and temperature components were obtained,and observation data of surface and high level were combined to assess the contribution of urbanization effect. In the last part of the paper,the cause of urbanization effects on temperature was discussed. The results indicated: The long term change trend of Shanghai annual mean temperature is 1.31/100a from 1873 to 2004,the periods of 1921-1948 and 1979 - 2004 are warmer,and the 1979 - 2004 period is the warmest; compared to suburb stations,the representative urban station has slower decreases in the cool period and faster increases in the warm one; the urban and suburb temperatures have distinct differences resulting from urbanization and the differences are increasing by the year. with the difference of mean temperature and minimum temperature being the greatest in fall and that of maximum temperature being the largest in summer between the urban and suburban areas. The urbanization process accelerates the warming speed,with the minimum temperature being the most obvious; the urbanization effect contributes a 0.4~C increase in 1980s and I. l~C in 1990s to the annual mean temperature.

作 者： MU Hai-zhen KONG Chun-yan TANG Xu KE Xiao-xin   作者單位： MU Hai-zhen,KONG Chun-yan(Shanghai Climate Center,Shanghai,200030 China)

TANG Xu,KE Xiao-xin(Shanghai Meteorological Bureau,Shanghai,200030 China) 

刊 名： 熱帶氣象學報(英文版)  英文刊名： JOURNAL OF TROPICAL METEOROLOGY  年，卷(期)： 2009 15(1)  分類號： P423.3.4  關鍵詞： climatology   shanghai air temperature   climate change   urbanization effect  

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