气候变化领域集成服务门户(CCPortal): Future warming exacerbated by aged-soot effect on cloud formation

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DOI	10.1038/s41561-020-0631-0
	Future warming exacerbated by aged-soot effect on cloud formation
	Lohmann U.; Friebel F.; Kanji Z.A.; Mahrt F.; Mensah A.A.; Neubauer D.
发表日期	2020
ISSN	17520894
起始页码	674
结束页码	680
卷号	13 期号:10
英文摘要	Clouds play a critical role in modulating the Earth’s radiation balance and climate. Anthropogenic aerosol particles that undergo aging processes, such as soot, aid cloud droplet and ice crystal formation and thus influence the microphysical structure of clouds. However, the associated changes in cloud radiative properties and climate effects remain uncertain and are largely omitted in climate models. Here we present global climate simulations of past and future effects of both ozone-aged soot particles acting as cloud condensation nuclei and sulfuric acid-aged soot particles acting as ice-nucleating particles on the structure and radiative effects of clouds. Under pre-industrial conditions, soot aging led to an increase in thick, low-level clouds that reduced negative shortwave effective radiative forcing by 0.2 to 0.3 W m−2. In the simulations of a future, warmer climate under double pre-industrial atmospheric carbon dioxide concentrations, soot aging and compensating cloud adjustments led to a reduction in low-level clouds and enhanced high-altitude cirrus cloud thickness, which influenced the longwave radiative balance and exacerbated the global mean surface warming by 0.4 to 0.5 K. Our findings suggest that reducing emissions of soot particles is beneficial for future climate, in addition to air quality and human health. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	aerosol; anthropogenic effect; climate modeling; cloud; cloud condensation nucleus; cloud droplet; cloud microphysics; future prospect; global warming; ice crystal; longwave radiation; radiation budget; soot
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206808
作者单位	ETH Zurich, Institute for Atmospheric and Climate Science, Zurich, Switzerland; Department of Chemistry, University of British Columbia, Vancouver, BC, Canada; City of Zurich, Environmental and Health Protection Service—Air Quality, Zurich, Switzerland
推荐引用方式 GB/T 7714	Lohmann U.,Friebel F.,Kanji Z.A.,et al. Future warming exacerbated by aged-soot effect on cloud formation[J],2020,13(10).
APA	Lohmann U.,Friebel F.,Kanji Z.A.,Mahrt F.,Mensah A.A.,&Neubauer D..(2020).Future warming exacerbated by aged-soot effect on cloud formation.Nature Geoscience,13(10).
MLA	Lohmann U.,et al."Future warming exacerbated by aged-soot effect on cloud formation".Nature Geoscience 13.10(2020).