Journal
ADVANCES IN CLIMATE CHANGE RESEARCH
Volume 7, Issue 3, Pages 154-168Publisher
SCIENCE PRESS
DOI: 10.1016/j.accre.2016.09.003
Keywords
Regional climate change; Urbanization effect; Homogenized observation series; High-resolution modeling; Climate adaptation
Funding
- Chinese Academy of Sciences [XDA05090000]
- National Natural Science Foundation [41475078]
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This paper summarizes recent studies on the effects of urbanization on climate in China. The effects of urbanization on local climate trends have been re-estimated based on homogenized observations and using improved methods. In this respect, the effect of urbanization on the observed warming trend of local surface air temperatures during the last few decades is determined as being about 20% at urban stations such as the Beijing Observatory. The large-scale weakening trend of wind speed is also about 20% more prominent at the city center than its surroundings. The effect of urbanization on precipitation is not profound, but results of high-resolution regional climate modeling suggest that this effect may depend on the urban extent. Although the urban heat island (UHI) should favor local atmospheric convection and hence precipitation, the increasingly extending urban land-use may reduce precipitation over the urban cluster in North China. It is found that urbanization can play a more notable role in extreme events than usual weather. High-resolution simulations show a positive feedback between the UHI and the super-heat wave in Shanghai during July-August 2013. Relevant studies dealing with urban climate adaptation are discussed in relation to recent findings.
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