Urbanization and heterogeneous surface warming in eastern China  

作　　者：WU Kai YANG XiuQun 

机构地区：[1]Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University

出　　处：《Chinese Science Bulletin》2013年第12期1363-1373,共11页

基　　金：supported by the National Basic Research Program of China (2010CB428504)

摘　　要：With the homogeneity-adjusted surface air temperature (SAT) data at 312 stations in eastern China for 1979-2008 and the Defense Meteorological Satellite Program/Operational Linescan System (DMSP/OLS) nighttime light data, the spatial heterogeneities of the SAT trends on different scales are detected with a spatial filtering (i.e. moving spatial anomaly) method, and the impact of urbanization in eastern China on surface warming is analyzed. Results show that the urbanization can induce a remarkable summer warming in Yangtze River Delta (YRD) city cluster region and a winter warming in Beijing-Tianjin-Hebei (BTH) city cluster region. The YRD warming in summer primarily results from the significant increasing of maximum temperature, with an estimated urban warming rate at 0.132-0.250℃ per decade, accounting for 36%-68% of the total regional warming. The BTH warming in winter is primarily due to the remarkable increasing of minimum temperature, with an estimated urban warming rate at 0.102-0.214℃ per decade, accounting for 12%-24% of the total regional warming. The temporal-spatial differences of urban warming effect may be attributed to the variation of regional climatic background and the change of anthropogenic heat release.With the homogeneity-adjusted surface air temperature （SAT） data at 312 stations in eastern China for 1979-2008 and the Defense Meteorological Satell.ite Program/Operational Linescan System （DMSP/OLS） nighttime light data, the spatial heterogeneities of the SAT trends on different scales are detected with a spatial filtering （i.e. moving spatial anomaly） method, and the impact of urbanization in eastern ,China on surface warming is analyzed. Results show that the urbanization can induce a remarkable summer warming in Yangtze River Delta （YRD） city cluster region and a winter warming in Beijing-Tianjin-Hebei （BTH） city cluster region. The YRD warming in summer primarily results from the significant increasing of maximum temperature, with an estimated urban warming rate at 0.132-0.250℃ per decade, accounting for 36%-68% of the total regional warming. The BTH warming in winter is primarily due to the remarkable increasing of minimum temperature, with an estimated urban warming rate at 0.102-0.214℃ per decade, accounting for 12%-24% of the total regional warming. The temporal-spatial differences of urban warming effect may be attributed to the variation of regional climatic background and the change of anthropogenic heat release.

关 键 词：气候变暖 中国东部 城市化 表面 长江三角洲 异构 空间滤波 冬季变暖 

分 类 号：P467[天文地球—大气科学及气象学] P618.130.2