气候变化领域集成服务门户(CCPortal): Persistent residential burning-related primary organic particles during wintertime hazes in North China: Insights into their aging and optical changes

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DOI	10.5194/acp-21-2251-2021
	Persistent residential burning-related primary organic particles during wintertime hazes in North China: Insights into their aging and optical changes
	Liu L.; Zhang J.; Zhang Y.; Wang Y.; Xu L.; Yuan Q.; Liu D.; Sun Y.; Fu P.; Shi Z.; Li W.
发表日期	2021
ISSN	1680-7316
起始页码	2251
结束页码	2265
卷号	21 期号:3
英文摘要	Primary organic aerosols (POAs) are a major component of PMspan classCombining double low line"inline-formula" 2.5/span in winter polluted air in the North China Plain (NCP), but our understanding of the atmospheric aging processes of POA particles and the resulting influences on their optical properties is limited. As part of the Atmospheric Pollution and Human Health in a Chinese Megacity (APHH-Beijing) program, we collected airborne particles at an urban site (Beijing) and an upwind rural site (Gucheng, Hebei province) in the NCP during 13-27 November 2016 for microscopic analyses. We confirmed that large numbers of light-absorbing spherical POA (i.e., tarball) and irregular POA particles with high viscosity were emitted from domestic coal and biomass burning at the rural site and were further transported to the urban site during regional wintertime hazes. During the heavily polluted period (PMspan classCombining double low line"inline-formula" 2.5/span span classCombining double low line"inline-formula" >/span 200 span classCombining double low line"inline-formula" μ/span g mspan classCombining double low line"inline-formula" -3/span ), more than 60 % of these burning-related POA particles were thickly coated with secondary inorganic aerosols (named as core-shell POA-SIA particles) through the aging process, suggesting that POA particles can provide surfaces for the heterogeneous reactions of SOspan classCombining double low line"inline-formula" 2/span and NOspan classCombining double low line"inline-formula" i x/i /span . As a result, during the heavily polluted period, their average particle-to-core diameter ratios at the rural and urban sites increased to 1.60 and 1.67, respectively. Interestingly, we found that the aging process did not change the morphology and sizes of POA cores, indicating that the burning-related POA particles are quite inert in the atmosphere and can be transported over long distances. Using Mie theory we estimated that the absorption capacity of these POA particles was enhanced by span classCombining double low line"inline-formula" g1/4/span 1.39 times in the heavily polluted period at the rural and urban sites due to the "lensing effect" of secondary inorganic coatings. We highlight that the lensing effect on burning-related POA particles should be considered in radiative forcing models and authorities should continue to promote clean energy in rural areas to effectively reduce primary emissions. © 2018 Georg Thieme Verlag. All rights reserved.
语种	英语
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/168755
作者单位	Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, 310027, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, United Kingdom
推荐引用方式 GB/T 7714	Liu L.,Zhang J.,Zhang Y.,et al. Persistent residential burning-related primary organic particles during wintertime hazes in North China: Insights into their aging and optical changes[J],2021,21(3).
APA	Liu L..,Zhang J..,Zhang Y..,Wang Y..,Xu L..,...&Li W..(2021).Persistent residential burning-related primary organic particles during wintertime hazes in North China: Insights into their aging and optical changes.Atmospheric Chemistry and Physics,21(3).
MLA	Liu L.,et al."Persistent residential burning-related primary organic particles during wintertime hazes in North China: Insights into their aging and optical changes".Atmospheric Chemistry and Physics 21.3(2021).