Articles | Volume 16, issue 3
Research article
17 Feb 2016
Research article |  | 17 Feb 2016

Drizzle formation in stratocumulus clouds: effects of turbulent mixing

L. Magaritz-Ronen, M. Pinsky, and A. Khain

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Subject: Clouds and Precipitation | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

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Baker, M. B., Corbin, R. G., and Latham, J.: The influence of entrainment on the evolution of cloud droplet spectra: I. A model of inhomogeneous mixing, Q. J. R. Meteorol. Soc., 106, 581–598,, 1980.
Brenguier, J.-L. L., Pawlowska, H., Schuller, L., Preusker, R., Fischer, J., Fouquart, Y., and Schüller, L.: Radiative Properties of Boundary Layer Clouds: Droplet Effective Radius versus Number Concentration, J. Atmos. Sci., 57, 803–821,<0803:RPOBLC>2.0.CO;2, 2000.
Cooper, W. A., Lasher-Trapp, S. G., and Blyth, A. M.: The Influence of Entrainment and Mixing on the Initial Formation of Rain in a Warm Cumulus Cloud, J. Atmos. Sci., 70, 1727–1743,, 2013.
Short summary
The mechanism of drizzle formation in shallow stratocumulus clouds and the effect of turbulent mixing on this process are investigated using a Lagrangian-Eularian model of the cloud-topped boundary layer. It was found that first large drops form in volumes that are closest to adiabatic with extended residence near cloud top, and maximum values of LWC. Turbulent mixing was found able to delay the process of drizzle initiation but is essential for the further development of drizzle in the cloud.
Final-revised paper