气候变化领域集成服务门户(CCPortal): Development of aerosol activation in the double-moment Unified Model and evaluation with CLARIFY measurements

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DOI	10.5194/acp-20-10997-2020
	Development of aerosol activation in the double-moment Unified Model and evaluation with CLARIFY measurements
	Gordon H.; Field P.R.; Abel S.J.; Barrett P.; Bower K.; Crawford I.; Cui Z.; Grosvenor D.P.; Hill A.A.; Taylor J.; Wilkinson J.; Wu H.; Carslaw K.S.
发表日期	2020
ISSN	1680-7316
起始页码	10997
结束页码	11024
卷号	20 期号:18
英文摘要	Representing the number and mass of cloud and aerosol particles independently in a climate, weather prediction or air quality model is important in order to simulate aerosol direct and indirect effects on radiation balance. Here we introduce the first configuration of the UK Met Office Unified Model in which both cloud and aerosol particles have "double-moment"representations with prognostic number and mass. The GLObal Model of Aerosol Processes (GLOMAP) aerosol microphysics scheme, already used in the Hadley Centre Global Environmental Model version 3 (HadGEM3) climate configuration, is coupled to the Cloud AeroSol Interacting Microphysics (CASIM) cloud microphysics scheme. We demonstrate the performance of the new configuration in high-resolution simulations of a case study defined from the CLARIFY aircraft campaign in 2017 near Ascension Island in the tropical southern Atlantic. We improve the physical basis of the activation scheme by representing the effect of existing cloud droplets on the activation of new aerosol, and we also discuss the effect of unresolved vertical velocities. We show that neglect of these two competing effects in previous studies led to compensating errors but realistic droplet concentrations. While these changes lead only to a modest improvement in model performance, they reinforce our confidence in the ability of the model microphysics code to simulate the aerosol-cloud microphysical interactions it was designed to represent. Capturing these interactions accurately is critical to simulating aerosol effects on climate. © Author(s) 2020.
语种	英语
scopus关键词	aerosol composition; aerosol formation; air quality; cloud microphysics; remote sensing; satellite data; spatial resolution
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/141088
作者单位	School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; Engineering Research Accelerator, Carnegie Mellon University, Forbes Avenue, Pittsburgh, 15213, United States; Met Office, Fitzroy Road, Exeter, EX1 3PB, United Kingdom; Department of Earth and Environmental Sciences, University of Manchester, Manchester, M13 9PL, United Kingdom
推荐引用方式 GB/T 7714	Gordon H.,Field P.R.,Abel S.J.,et al. Development of aerosol activation in the double-moment Unified Model and evaluation with CLARIFY measurements[J],2020,20(18).
APA	Gordon H..,Field P.R..,Abel S.J..,Barrett P..,Bower K..,...&Carslaw K.S..(2020).Development of aerosol activation in the double-moment Unified Model and evaluation with CLARIFY measurements.Atmospheric Chemistry and Physics,20(18).
MLA	Gordon H.,et al."Development of aerosol activation in the double-moment Unified Model and evaluation with CLARIFY measurements".Atmospheric Chemistry and Physics 20.18(2020).