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DOI	10.1029/2019MS001670
	Scaling of an Atmospheric Model to Simulate Turbulence and Cloud Microphysics in the Pi Chamber
	Thomas S.; Ovchinnikov M.; Yang F.; van der Voort D.; Cantrell W.; Krueger S.K.; Shaw R.A.
发表日期	2019
ISSN	19422466
起始页码	1981
结束页码	1994
卷号	11 期号:7
英文摘要	The Pi Cloud Chamber offers a unique opportunity to study aerosol-cloud microphysics interactions in a steady-state, turbulent environment. In this work, an atmospheric large-eddy simulation (LES) model with spectral bin microphysics is scaled down to simulate these interactions, allowing comparison with experimental results. A simple scalar flux budget model is developed and used to explore the effect of sidewalls on the bulk mixing temperature, water vapor mixing ratio, and supersaturation. The scaled simulation and the simple scalar flux budget model produce comparable bulk mixing scalar values. The LES dynamics results are compared with particle image velocimetry measurements of turbulent kinetic energy, energy dissipation rates, and large-scale oscillation frequencies from the cloud chamber. These simulated results match quantitatively to experimental results. Finally, with the bin microphysics included the LES is able to simulate steady-state cloud conditions and broadening of the cloud droplet size distributions with decreasing droplet number concentration, as observed in the experiments. The results further suggest that collision-coalescence does not contribute significantly to this broadening. This opens a path for further detailed intercomparison of laboratory and simulation results for model validation and exploration of specific physical processes. ©2019. The Authors.
语种	英语
scopus关键词	Budget control; Cloud chambers; Drops; Energy dissipation; Kinetic energy; Kinetics; Large eddy simulation; Mixing; Turbulent flow; Velocity measurement; Atmospheric model; Cloud microphysics; Energy dissipation rate; Large scale oscillations; Particle image velocimetry measurement; Turbulent environments; Turbulent kinetic energy; Water vapor mixing ratio; Atmospheric thermodynamics; atmospheric modeling; cloud droplet; cloud microphysics; energy dissipation; experimental study; large eddy simulation; mixing ratio; particle image velocimetry; steady-state equilibrium; supersaturation; turbulence; water vapor
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156977
作者单位	Michigan Technological University, Houghton, MI, United States; Pacific Northwest National Laboratory, Richland, WA, United States; Brookhaven National Laboratory, Upton, NY, United States; University of Utah, Salt Lake City, UT, United States
推荐引用方式 GB/T 7714	Thomas S.,Ovchinnikov M.,Yang F.,et al. Scaling of an Atmospheric Model to Simulate Turbulence and Cloud Microphysics in the Pi Chamber[J],2019,11(7).
APA	Thomas S..,Ovchinnikov M..,Yang F..,van der Voort D..,Cantrell W..,...&Shaw R.A..(2019).Scaling of an Atmospheric Model to Simulate Turbulence and Cloud Microphysics in the Pi Chamber.Journal of Advances in Modeling Earth Systems,11(7).
MLA	Thomas S.,et al."Scaling of an Atmospheric Model to Simulate Turbulence and Cloud Microphysics in the Pi Chamber".Journal of Advances in Modeling Earth Systems 11.7(2019).