Response of the wintertime PM2.5 level to anthropogenic emission mitigations in the Guanzhong basin
MENG Ning1, BEI Nai-fang1, LI Guo-hui2, XIAO Bo1,3
1. Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. Key Lab of Aerosol Chemistry & Physics, Chinese Academy of Sciences (KLACP), Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China;
3. Xi'an Meteorological Bureau of Shannxi Province, Xi'an 710016, China
Based on the analysis of four typical unfavorable synoptic situations during wintertime in the Guanzhong basin (GZB), the WRF-Chem model had been applied to simulate the selected four days representing the four unfavorable synoptic situations during the wintertime of 2013. The results generally showed good consistence between the modeled and observed PM2.5 distributions and variations. Further studies had been performed to verify the PM2.5 response to the anthropogenic emission mitigation under the four unfavorable synoptic situations in GZB. Sensitivity results demonstrated that the mass concentration of PM2.5 decreases nonlinearly along with the anthropogenic emission mitigation. Additionally, the PM2.5 mitigation was more significant at the more polluted areas. The anthropogenic emission in GZB needed to be reduced 30%~60% to meet the China National Air Quality Standard under the above-mentioned four unfavorable synoptic situations.
孟宁, 贝耐芳, 李国辉, 肖波. 关中地区冬季人为源减排对PM2.5浓度的影响[J]. 中国环境科学, 2017, 37(5): 1646-1656.
MENG Ning, BEI Nai-fang, LI Guo-hui, XIAO Bo. Response of the wintertime PM2.5 level to anthropogenic emission mitigations in the Guanzhong basin. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(5): 1646-1656.
Zhang J P, Zhu T, Zhang Q H, et al. The impact of circulation patterns on regional transport pathways and air quality over Beijing and its surroundings [J]. Atmospheric Chemistry and Physics, 2012,12(11):5031-5053.
[6]
Bei, N, Li, G, Huang, R.J, et al. Typical synoptic situations and their impacts on the wintertime air pollution in the Guanzhong basin [J]. Atmospheric Chemistry and Physics, 2016,16(11): 7373-7387.
[7]
Bei N, Xiao B, Meng N, et al. Critical role of meteorological conditions in a persistent haze episode in the Guanzhong basin, China [J]. Science of Total Environment, 2016,550:273-284.
Grell G A, Peckham S E, Schmitz R, et al. Fully coupled "online"chemistry within the WRF model [J]. Atmospheric Environment, 2005,39(37):6957-6975.
[19]
Li G, Lei W, Zavala M, et al. Impacts of HONO sources on the photochemistry in Mexico City during the MCMA-2006/MILAGO Campaign [J]. Atmospheric Chemistry and Physics, 2010,10(14):6551-6567.
[20]
Li G, Bei N, Tie X, et al. Aerosol effects on the photochemistry in Mexico City during MCMA-2006/MILAGRO campaign [J]. Atmospheric Chemistry and Physics, 2011,11(11):5169-5182.
[21]
Li G, Zavala M, Lei W, et al. Simulations of organic aerosol concentrations in Mexico City using the WRF-CHEM model during the MCMA-2006/MILAGRO campaign [J]. Atmospheric Chemistry and Physics, 2011,11(8):3789-3809.
[22]
Stockwell W R, Middleton P, Chang J S, et al. The second generation regional acid deposition model chemical mechanism for regional air quality modeling [J]. Journal of Geophysical Research, 1990,95(D10):16343.
[23]
Hong S-Y, Noh Y, Dudhia J. A new vertical diffusion package with an explicit treatment of entrainment processes [J]. Monthly Weather Review, 2006,134(9):2318-2341.
[24]
Hong S-Y, Dudhia J, Chen S-H. A revised approach to ice microphysical processes for the bulk parameterization of clouds and precipitation [J]. Monthly Weather Review, 2004,132(1): 103-120.
[25]
Grell G A, Dévényi D. A generalized approach to parameterizing convection combining ensemble and data assimilation techniques [J]. Geophysical Research Letters, 2002,29(14):381-384.
[26]
Zhang Q, Streets D G, Carmichael G R, et al. Asian emissions in 2006 for the NASA INTEX-B mission [J]. Atmospheric Chemistry and Physics, 2009,9(14):5131-5153.
