气候变化领域集成服务门户(CCPortal): Direct radiative effect of dust-pollution interactions

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DOI	10.5194/acp-19-7397-2019
	Direct radiative effect of dust-pollution interactions
	Klingmüller K.; Lelieveld J.; Karydis V.A.; Stenchikov G.L.
发表日期	2019
ISSN	16807316
起始页码	7397
结束页码	7408
卷号	19 期号:11
英文摘要	The chemical ageing of aeolian dust, through interactions with air pollution, affects the optical and hygroscopic properties of the mineral particles and hence their atmospheric residence time and climate forcing. Conversely, the chemical composition of the dust particles and their role as coagulation partners impact the abundance of particulate air pollution. This results in a change in the aerosol direct radiative effect that we interpret as an anthropogenic radiative forcing associated with mineral dust-pollution interactions. Using the ECHAM/MESSy atmospheric chemistry climate model (EMAC), which combines the Modular Earth Submodel System (MESSy) with the European Centre Hamburg (ECHAM) climate model, including a detailed parametrisation of ageing processes and an emission scheme accounting for the chemical composition of desert soils, we study the direct radiative forcing globally and regionally, considering solar and terrestrial radiation. Our results indicate positive and negative forcings, depending on the region. The predominantly negative forcing at the top of the atmosphere over large parts of the dust belt, from West Africa to East Asia, attains a maximum of about-2 W m-2 south of the Sahel, in contrast to a positive forcing over India. Globally averaged, these forcings partially counterbalance, resulting in a net negative forcing of-0:05 W m-2, which nevertheless represents a considerable fraction (40 %) of the total dust forcing. © 2019 Author(s).
语种	英语
scopus关键词	aerosol; aging; atmospheric pollution; chemical composition; climate modeling; coagulation; dust; parameterization; radiative forcing; East Africa; West Africa
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/144365
作者单位	Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, Mainz, 55128, Germany; Cyprus Institute, P.O. Box 27456, Nicosia, 1645, Cyprus; Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, Jülich, 52425, Germany; Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
推荐引用方式 GB/T 7714	Klingmüller K.,Lelieveld J.,Karydis V.A.,et al. Direct radiative effect of dust-pollution interactions[J],2019,19(11).
APA	Klingmüller K.,Lelieveld J.,Karydis V.A.,&Stenchikov G.L..(2019).Direct radiative effect of dust-pollution interactions.Atmospheric Chemistry and Physics,19(11).
MLA	Klingmüller K.,et al."Direct radiative effect of dust-pollution interactions".Atmospheric Chemistry and Physics 19.11(2019).