气候变化领域集成服务门户(CCPortal): Effects of Sea Salt Aerosol Emissions for Marine Cloud Brightening on Atmospheric Chemistry: Implications for Radiative Forcing

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DOI	10.1029/2019GL085838
	Effects of Sea Salt Aerosol Emissions for Marine Cloud Brightening on Atmospheric Chemistry: Implications for Radiative Forcing
	Horowitz H.M.; Holmes C.; Wright A.; Sherwen T.; Wang X.; Evans M.; Huang J.; Jaeglé L.; Chen Q.; Zhai S.; Alexander B.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	Marine cloud brightening (MCB) is proposed to offset global warming by emitting sea salt aerosols to the tropical marine boundary layer, which increases aerosol and cloud albedo. Sea salt aerosol is the main source of tropospheric reactive chlorine (Cly) and bromine (Bry). The effects of additional sea salt on atmospheric chemistry have not been explored. We simulate sea salt aerosol injections for MCB under two scenarios (212–569 Tg/a) in the GEOS-Chem global chemical transport model, only considering their impacts as a halogen source. Globally, tropospheric Cly and Bry increase (20–40%), leading to decreased ozone (−3 to −6%). Consequently, OH decreases (−3 to −5%), which increases the methane lifetime (3–6%). Our results suggest that the chemistry of the additional sea salt leads to minor total radiative forcing compared to that of the sea salt aerosol itself (~2%) but may have potential implications for surface ozone pollution in tropical coastal regions. © 2020. The Authors.
英文关键词	Aerosols; Air pollution; Atmospheric movements; Atmospheric radiation; Boundary layers; Global warming; Ozone; Tropics; Troposphere; Chemical transport models; Coastal regions; Geoengineering; Marine boundary layers; marine cloud brightening; Radiative forcings; reactive halogens; Sea salt aerosol; Atmospheric chemistry; aerosol; albedo; atmospheric chemistry; atmospheric transport; boundary layer; cloud; global warming; halogen; marine environment; ozone; sea salt; troposphere
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170688
作者单位	JISAO, University of Washington, Seattle, WA, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, United States; Department of Chemistry, University of York, York, United Kingdom; Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York, United Kingdom; School of Energy and Environment, City University of Hong Kong, Hong Kong; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; Department of Chemistry, University of Michigan, Ann Arbor, MI, United States
推荐引用方式 GB/T 7714	Horowitz H.M.,Holmes C.,Wright A.,et al. Effects of Sea Salt Aerosol Emissions for Marine Cloud Brightening on Atmospheric Chemistry: Implications for Radiative Forcing[J],2020,47(4).
APA	Horowitz H.M..,Holmes C..,Wright A..,Sherwen T..,Wang X..,...&Alexander B..(2020).Effects of Sea Salt Aerosol Emissions for Marine Cloud Brightening on Atmospheric Chemistry: Implications for Radiative Forcing.Geophysical Research Letters,47(4).
MLA	Horowitz H.M.,et al."Effects of Sea Salt Aerosol Emissions for Marine Cloud Brightening on Atmospheric Chemistry: Implications for Radiative Forcing".Geophysical Research Letters 47.4(2020).