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Effects of Aerosols on Radiative Forcing and Climate Over East Asia With Different SO2 Emissions
Xie, Xiaoning1; Liu, Xiaodong1,2; Wang, Hongli3; Wang, Zhaosheng1
2016-08-01
发表期刊ATMOSPHERE
卷号7期号:8
文章类型Article
摘要It is known that aerosol and precursor gas emissions over East Asia may be underestimated by 50% due to the absence of data on regional rural and township industries. As the most important element of anthropogenic emissions, sulphur dioxide (SO2) can form sulfate aerosols through several chemical processes, thus affecting the regional and global climate. In this study, we use the Community Atmospheric Model 5.1 (CAM5.1) to investigate the effects of anthropogenic aerosols on radiative forcing and the climate over East Asia, taking into consideration various SO2 emission levels, including double the amount of SO2 emissions over East Asia. Numerical experiments are performed using high-resolution CAM5.1 with pre-industrial (PI) and present day (PD) aerosol emission levels, and with PD aerosol emission levels with double SO2 emissions over East Asia (PD2SO2). The simulated aerosol optical depth and surface sulfate concentrations over East Asia are significantly increased in PD2SO2, which is in better agreement with the observational results. The simulation results show extensive aerosol direct and indirect radiative forcing for PD PI (the difference between PI and PD), which significantly weakens the large-scale intensity of the East Asian summer monsoon (EASM) and reduces the summer precipitation. Compared to PD, the aerosol direct radiative forcing is significantly increased in PD2SO2, whereas the aerosol indirect radiative forcing is markedly decreased due to the inhibition of cloud formation, especially over North China. The increase in aerosol direct radiative forcing and decrease in aerosol indirect radiative forcing result in insignificant changes in the total amount of aerosol radiative forcing. These results also show that the large-scale intensity of the EASM and the associated summer precipitation are insensitive to the doubling of current SO2 emissions.
关键词Aerosol Direct Effect Aerosol Indirect Effect Summer Precipitation
WOS标题词Science & Technology ; Physical Sciences
DOI10.3390/atmos7080099
关键词[WOS]COMMUNITY ATMOSPHERE MODEL ; BLACK CARBON AEROSOLS ; ANTHROPOGENIC AEROSOLS ; SUMMER MONSOON ; CLOUD MICROPHYSICS ; CHINA ; RESOLUTION
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000382476600004
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5673
专题古环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China
2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Environm Sci & Technol, Xian 710049, Peoples R China
3.Shaanxi Radio & TV Univ, Xian 710002, Peoples R China
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GB/T 7714
Xie, Xiaoning,Liu, Xiaodong,Wang, Hongli,et al. Effects of Aerosols on Radiative Forcing and Climate Over East Asia With Different SO2 Emissions[J]. ATMOSPHERE,2016,7(8).
APA Xie, Xiaoning,Liu, Xiaodong,Wang, Hongli,&Wang, Zhaosheng.(2016).Effects of Aerosols on Radiative Forcing and Climate Over East Asia With Different SO2 Emissions.ATMOSPHERE,7(8).
MLA Xie, Xiaoning,et al."Effects of Aerosols on Radiative Forcing and Climate Over East Asia With Different SO2 Emissions".ATMOSPHERE 7.8(2016).
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