Simulation of the impacts of urbanization in different areas of China on East Asia Summer monsoon climate
The impacts of urbanization on East Asia Summer monsoon climate are simulated by using mesoscale model (MM5) with modified urban land cover in different locations of Eastern China. In the work, the contrast simulations of East Asia summer monsoon are conducted for investigating the influence of urbanization at different latitudes on East Asia summer monsoon. Trying to realize the different climatic effects of large-scale urban agglomerations in different climatic background (different latitudes), in order to provide a reference for future rational planning size and layout of urban development to minimize the negative impact of the climatic effects of urbanization. The results show that, along with urban size increase, reduced precipitation and higher temperature are simulated over urban extended areas and its adjacent areas, and it reveals a dry and warm climate trends. The climate effects of urbanization will spread to a more expansive area by atmospheric circulation transporting. The climate effects are distinct difference conducted by urbanization in different locations (latitudes). The urban expansion in north of China will bring a more remarkable influence on climate than that of in south. The climate is not very sensitivity to land cover changes in Yangtse river delta in some sense, and it suitable for developing mega-cities in this region. But in north China, the urban size should be controlled in order to diminish the disadvantage influences of urban expansion on East Asia climate. The urban expanding will induce notable influences on atmospheric circulations of East Asia summer monsoon, and the circulations evoked by urban expansion have detailed local structures. The influences of urban extended on summer monsoon climate can not be simply generalized by monsoon circulation strengthening or weakening.
mega-citiesEast Asia summer monsoonclimatic influencesimulation
NETL
NSTL
万方数据
维普
