气候变化领域集成服务门户(CCPortal): The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic-A simulation study supported by observational data

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DOI	10.5194/acp-21-3871-2021
	The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic-A simulation study supported by observational data
	Bulatovic I.; Igel A.L.; Leck C.; Heintzenberg J.; Riipinen I.; Ekman A.M.L.
发表日期	2021
ISSN	1680-7316
起始页码	3871
结束页码	3897
卷号	21 期号:5
英文摘要	The potential importance of Aitken mode particles (diameters 25 80 nm) for stratiform mixed-phase clouds in the summertime high Arctic (80 N) has been investigated using two large-eddy simulation models. We find that, in both models, Aitken mode particles significantly affect the simulated microphysical and radiative properties of the cloud and can help sustain the cloud when accumulation mode concentrations are low (10 20 cm3), even when the particles have low hygroscopicity (hygroscopicity parameter-D 0:1). However, the influence of the Aitken mode decreases if the overall liquid water content of the cloud is low, either due to a higher ice fraction or due to low radiative cooling rates. An analysis of the simulated supersaturation (ss) statistics shows that the ss frequently reaches 0.5% and sometimes even exceeds 1 %, which confirms that Aitken mode particles can be activated. The modelling results are in qualitative agreement with observations of the Hoppel minimum obtained from four different expeditions in the high Arctic. Our findings highlight the importance of better understanding Aitken mode particle formation, chemical properties and emissions, particularly in clean environments such as the high Arctic. © 2021 BMJ Publishing Group. All rights reserved.
语种	英语
scopus关键词	Aitken nucleus; cloud microphysics; large eddy simulation; qualitative analysis; radiative transfer; stratiform cloud; summer; supersaturation; water content; Arctic
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/247066
作者单位	Department of Meteorology, Stockholm University, Stockholm, 106 91, Sweden; Bolin Centre for Climate Research, Stockholm, 106 91, Sweden; Department of Land, Air and Water Resources, University of California, Davis, CA 95616, United States; Department of Environmental Science (ACES), Stockholm University, Stockholm, 106 91, Sweden; Leibniz Institute for Tropospheric Research, Permoserstraße 14, Leipzig, 04318, Germany
推荐引用方式 GB/T 7714	Bulatovic I.,Igel A.L.,Leck C.,et al. The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic-A simulation study supported by observational data[J],2021,21(5).
APA	Bulatovic I.,Igel A.L.,Leck C.,Heintzenberg J.,Riipinen I.,&Ekman A.M.L..(2021).The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic-A simulation study supported by observational data.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(5).
MLA	Bulatovic I.,et al."The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic-A simulation study supported by observational data".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.5(2021).