The impacts of urbanization on air quality over the Pearl River Delta in winter: roles of urban land use and emission distribution     

Bin Chen  Shuai Yang  Xiang-De Xu  Wei Zhang 《Theoretical and Applied Climatology》2014,117(1-2):29-39

In this study, ideal but realistic numerical experiments are performed to explore the relative effects of changes in land use and emission distribution on air quality in the Pearl River Delta (PRD) region in winter. The experiments are accomplished using the Lagrangian particle transport and dispersion model FLEXPART coupled with the Weather Research and Forecasting model under different scenarios. Experiment results show that the maximum changes in daily mean air pollution concentration (as represented by SO₂ concentration) caused by land use change alone reaches up to 2?×?10^?6 g m^?3, whereas changes in concentrations due to the anthropogenic emission distribution are characterized by a maximum value of 6?×?10^?6 g m^?3. Such results reflect that, although the impacts of land use change on air quality are non-negligible, the emission distribution exerts a more significant influence on air quality than land use change. This provides clear implications for policy makers to control urban air pollution over the PRD region, especially for the urban planning in spatial arrangements for reasonable emissions.  相似文献   

Temperature trend–altitude relationship in China during 1963–2012     

Danhong Dong  Gang Huang  Xia Qu  Weichen Tao  Guangzhou Fan 《Theoretical and Applied Climatology》2015,122(1-2):285-294

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