A stratocumulus model with an internal circulation.

Wang Shouping Wang, Bruce A Albrecht

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

An updraft and downdraft circulation model based on a mass flux representation of convective fluxes is incorporated into a classic cloud-topped, mixed layer model. The convective mass flux is assumed to be proportional to the convective velocity scale. The closure is obtained by assuming that the turbulent kinetic energy consumption due to entrainment is a small portion of its production due to buoyancy. The model is used to study how cloud-top entrainment instability, partitioning of radiative cooling, and drizzle affect the boundary layer and the stratocumulus circulation. The results obtained with the model indicate that the intensity of the internal circulation may be critical in regulating the structure of stratocumulus clouds so that the cloud-top entrainment instability as it is presently used is not sufficient to define the breakup of stratocumulus. The vertical distribution of radiative cooling in the mixed layer is found to decrease the amplitude of the diurnal cycle of the cloud thickness. Precipitation processes are incorporated into the model to study their effects on the bulk properties of the boundary layer.-Authors

Original languageEnglish (US)
Pages (from-to)2374-2391
Number of pages18
JournalJournal of the Atmospheric Sciences
Volume43
Issue number21
StatePublished - 1986
Externally publishedYes

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stratocumulus
entrainment
mixed layer
boundary layer
cooling
drizzle
updraft
buoyancy
kinetic energy
vertical distribution
partitioning

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Shouping Wang, W., & Albrecht, B. A. (1986). A stratocumulus model with an internal circulation. Journal of the Atmospheric Sciences, 43(21), 2374-2391.

A stratocumulus model with an internal circulation. / Shouping Wang, Wang; Albrecht, Bruce A.

In: Journal of the Atmospheric Sciences, Vol. 43, No. 21, 1986, p. 2374-2391.

Research output: Contribution to journalArticle

Shouping Wang, W & Albrecht, BA 1986, 'A stratocumulus model with an internal circulation.', Journal of the Atmospheric Sciences, vol. 43, no. 21, pp. 2374-2391.
Shouping Wang, Wang ; Albrecht, Bruce A. / A stratocumulus model with an internal circulation. In: Journal of the Atmospheric Sciences. 1986 ; Vol. 43, No. 21. pp. 2374-2391.
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