气候变化领域集成服务门户(CCPortal): Substantial cooling effect from aerosol-induced increase in tropical marine cloud cover

CCPortal

DOI	10.1038/s41561-024-01427-z
	Substantial cooling effect from aerosol-induced increase in tropical marine cloud cover
	Chen, Ying; Haywood, Jim; Wang, Yu; Malavelle, Florent; Jordan, George; Peace, Amy; Partridge, Daniel G.; Cho, Nayeong; Oreopoulos, Lazaros; Grosvenor, Daniel; Field, Paul; Allan, Richard P.; Lohmann, Ulrike
发表日期	2024
ISSN	1752-0894
EISSN	1752-0908
英文摘要	With global warming currently standing at approximately +1.2 degrees C since pre-industrial times, climate change is a pressing global issue. Marine cloud brightening is one proposed method to tackle warming through injecting aerosols into marine clouds to enhance their reflectivity and thereby planetary albedo. However, because it is unclear how aerosols influence clouds, especially cloud cover, both climate projections and the effectiveness of marine cloud brightening remain uncertain. Here we use satellite observations of volcanic eruptions in Hawaii to quantify the aerosol fingerprint on tropical marine clouds. We observe a large enhancement in reflected sunlight, mainly due to an aerosol-induced increase in cloud cover. This observed strong negative aerosol forcing suggests that the current level of global warming is driven by a weaker net radiative forcing than previously thought, arising from the competing effects of greenhouse gases and aerosols. This implies a greater sensitivity of Earth's climate to radiative forcing and therefore a larger warming response to both rising greenhouse gas concentrations and reductions in atmospheric aerosols due to air quality measures. However, our findings also indicate that mitigation of global warming via marine cloud brightening is plausible and is most effective in humid and stable conditions in the tropics where solar radiation is strong. Satellite observations from volcanic eruptions suggest that aerosols induce substantial cooling due to the reflectivity of increased tropical marine cloud cover, implying a high climate sensitivity.
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001200357300001
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/297171
作者单位	University of Birmingham; University of Exeter; Met Office - UK; Hadley Centre; University of Edinburgh; Swiss Federal Institutes of Technology Domain; ETH Zurich; Met Office - UK; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; University System of Maryland; University of Maryland Baltimore County; UK Research & Innovation (UKRI); Natural Environment Research Council (NERC); NERC National Centre for Atmospheric Science; University of Leeds; University of Leeds; University of Reading; UK Research & Innovation (UKRI); Natural Environment Research Council (NERC); NERC National Centre for Earth Observation; University of Reading
推荐引用方式 GB/T 7714	Chen, Ying,Haywood, Jim,Wang, Yu,et al. Substantial cooling effect from aerosol-induced increase in tropical marine cloud cover[J],2024.
APA	Chen, Ying.,Haywood, Jim.,Wang, Yu.,Malavelle, Florent.,Jordan, George.,...&Lohmann, Ulrike.(2024).Substantial cooling effect from aerosol-induced increase in tropical marine cloud cover.NATURE GEOSCIENCE.
MLA	Chen, Ying,et al."Substantial cooling effect from aerosol-induced increase in tropical marine cloud cover".NATURE GEOSCIENCE (2024).