Urban Heat Islands of China
He, Y., Jia, G., Hu, Y. and Zhou, Z. 2013. Detecting urban warming signals in climate records. Advances in Atmospheric Sciences 30: 1143-1153.
The four Chinese researchers' analysis determined that urban-induced warming contributed an average of 44% to the total mean warming of the studied stations due to the various degrees of urbanization around each station, and that the natural climate warming calculated in this study was 0.30°C per decade for the last three decades. And they report they also found "the urbanization rate affected the trend of temperature to a large extent," noting that "10% additional increases in the urban areas around meteorological stations within 1 km will likely lead to 0.13°C increases in the temperature trend."
In their parting words, He et al. write that "urban expansion may not have major impacts on the regional climate, but it may contribute to strong Urban Heat Island signals in meteorological records at the local scale, likely leading to a misinterpretation of overall warming magnitudes and even trends at the regional and global scales."
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