Analytical Model of Roll Vortices in the Convective Boundary Layer

Analytical solutions of convective waves in the convective boundary layer (CBL) were obtained with two-layer linearized atmospheric equations including Rayleigh friction, which represents the turbulent viscosity in the lower CBL. The analytical model shows that the interaction between the convection...

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Bibliographic Details
Published in:Boundary-layer meteorology 2009, Vol.130 (1), p.43-55
Main Authors: Liu, Huizhi, Sang, Jianguo
Format: Article
Language:English
Subjects:
Atmospheric boundary layer
Atmospheric Protection/Air Quality Control/Air Pollution
Atmospheric Sciences
Atmospherics
Bands
Boundary layer
Boundary layers
Convection, turbulence, diffusion. Boundary layer structure and dynamics
Convection-wave interaction
Convective bands
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Exact sciences and technology
External geophysics
Fluid flow
Gravity waves
Mathematical analysis
Mathematical models
Meteorology
Original Paper
Turbulence
Turbulent flow
Turbulent viscosity
Viscosity
Wave equation
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Summary:Analytical solutions of convective waves in the convective boundary layer (CBL) were obtained with two-layer linearized atmospheric equations including Rayleigh friction, which represents the turbulent viscosity in the lower CBL. The analytical model shows that the interaction between the convection in the lower layer and gravity waves in the upper layer is one of the causes for the formation of convective bands. The flow and temperature fields obtained by the analytical model present the main characteristics of convective bands found in field observations. We have also investigated the influences of atmospheric conditions on the characteristics of the bands. Results accord with previous knowledge about these phenomena.
ISSN:0006-8314
1573-1472
DOI:10.1007/s10546-008-9335-5