气候变化领域集成服务门户(CCPortal): Aerosol–photolysis interaction reduces particulate matter during wintertime haze events

CCPortal

DOI	10.1073/pnas.1916775117
	Aerosol–photolysis interaction reduces particulate matter during wintertime haze events
	Wu J.; Bei N.; Hu B.; Liu S.; Wang Y.; Shen Z.; Li X.; Liu L.; Wang R.; Liu Z.; Cao J.; Tie X.; Molina L.T.; Li G.
发表日期	2020
ISSN	0027-8424
起始页码	9755
结束页码	9761
卷号	117 期号:18
英文摘要	Aerosol–radiation interaction (ARI) plays a significant role in the accumulation of fine particulate matter (PM2.5) by stabilizing the planetary boundary layer and thus deteriorating air quality during haze events. However, modification of photolysis by aerosol scattering or absorbing solar radiation (aerosol–photolysis interaction or API) alters the atmospheric oxidizing capacity, decreases the rate of secondary aerosol formation, and ultimately alleviates the ARI effect on PM2.5 pollution. Therefore, the synergetic effect of both ARI and API can either aggravate or even mitigate PM2.5 pollution. To test the effect, a fully coupled Weather Research and Forecasting (WRF)-Chem model has been used to simulate a heavy haze episode in North China Plain. Our results show that ARI contributes to a 7.8% increase in near-surface PM2.5. However, API suppresses secondary aerosol formation, and the combination of ARI and API results in only 4.8% net increase of PM2.5. Additionally, API increases the solar radiation reaching the surface and perturbs aerosol nucleation and activation to form cloud condensation nuclei, influencing aerosol–cloud interaction. The results suggest that API reduces PM2.5 pollution during haze events, but adds uncertainties in climate prediction. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Aerosol–photolysis interaction; Aerosol–radiation interaction; Particulate pollution
语种	英语
scopus关键词	aerosol; article; China; climate; forecasting; haze; particulate matter; photolysis; prediction; solar radiation; uncertainty
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160966
作者单位	Wu, J., Key Lab of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, Shaanxi, 710061, China, Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi’an, Shaanxi, 710061, China; Bei, N., School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, 710049, China; Hu, B., State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Liu, S., Key Lab of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, Shaanxi, 710061, China, Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi’an, Shaanxi, 710061, China; Wang, Y., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States; Shen, Z., Center for Excellence in Quaternary Science and Glo...
推荐引用方式 GB/T 7714	Wu J.,Bei N.,Hu B.,等. Aerosol–photolysis interaction reduces particulate matter during wintertime haze events[J],2020,117(18).
APA	Wu J..,Bei N..,Hu B..,Liu S..,Wang Y..,...&Li G..(2020).Aerosol–photolysis interaction reduces particulate matter during wintertime haze events.Proceedings of the National Academy of Sciences of the United States of America,117(18).
MLA	Wu J.,et al."Aerosol–photolysis interaction reduces particulate matter during wintertime haze events".Proceedings of the National Academy of Sciences of the United States of America 117.18(2020).