气候变化领域集成服务门户(CCPortal): The impact of secondary ice production on Arctic stratocumulus

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DOI	10.5194/acp-20-1301-2020
	The impact of secondary ice production on Arctic stratocumulus
	Sotiropoulou G.; Sullivan S.; Savre J.; Lloyd G.; Lachlan-Cope T.; Ekman A.M.L.; Nenes A.
发表日期	2020
ISSN	1680-7316
起始页码	1301
结束页码	1316
卷号	20 期号:3
英文摘要	In situ measurements of Arctic clouds frequently show that ice crystal number concentrations (ICNCs) are much higher than the number of available ice-nucleating particles (INPs), suggesting that secondary ice production (SIP) may be active. Here we use a Lagrangian parcel model (LPM) and a large-eddy simulation (LES) to investigate the impact of three SIP mechanisms (rime splintering, break-up from ice-ice collisions and drop shattering) on a summer Arctic stratocumulus case observed during the Aerosol-Cloud Coupling And Climate Interactions in the Arctic (ACCACIA) campaign. Primary ice alone cannot explain the observed ICNCs, and drop shattering is ineffective in the examined conditions. Only the combination of both rime splintering (RS) and collisional break-up (BR) can explain the observed ICNCs, since both of these mechanisms are weak when activated alone. In contrast to RS, BR is currently not represented in large-scale models; however our results indicate that this may also be a critical ice-multiplication mechanism. In general, low sensitivity of the ICNCs to the assumed INP, to the cloud condensation nuclei (CCN) conditions and also to the choice of BR parameterization is found. Finally, we show that a simplified treatment of SIP, using a LPM constrained by a LES and/or observations, provides a realistic yet computationally efficient way to study SIP effects on clouds. This method can eventually serve as a way to parameterize SIP processes in large-scale models. © 2020 Author(s).
语种	英语
scopus关键词	cloud condensation nucleus; cloud cover; ice; ice crystal; large eddy simulation; parameterization; stratocumulus; 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/141571
作者单位	Laboratory of Atmospheric Processes and Their Impacts, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland; Department of Earth and Environmental Engineering, Columbia University, New York, 10027, United States; Meteorological Institute, Faculty of Physics, Ludwig-Maximilians-Universität, Munich, Germany; Centre for Atmospheric Science, University of Manchester, Manchester, M139P, United Kingdom; British Antarctic Survey, Cambridge, CB3 0ET, United Kingdom; Department of Meteorology, Bolin Centre for Climate Research, Stockholm University, Stockholm, 11419, Sweden; Institute of Chemical Engineering Sciences, Foundation for Research and Technology - Hellas, Patras, 26504, Greece
推荐引用方式 GB/T 7714	Sotiropoulou G.,Sullivan S.,Savre J.,et al. The impact of secondary ice production on Arctic stratocumulus[J],2020,20(3).
APA	Sotiropoulou G..,Sullivan S..,Savre J..,Lloyd G..,Lachlan-Cope T..,...&Nenes A..(2020).The impact of secondary ice production on Arctic stratocumulus.Atmospheric Chemistry and Physics,20(3).
MLA	Sotiropoulou G.,et al."The impact of secondary ice production on Arctic stratocumulus".Atmospheric Chemistry and Physics 20.3(2020).