Improving Non-local Parameterization of the Convective Boundary Layer |
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| Authors: | Zbigniew Sorbjan |
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| Institution: | (1) Department of Physics, Marquette University, Milwaukee, WI 53201-1881, USA;(2) Faculty of Environmental Engineering, Warsaw University of Technology, Warsaw, Poland;(3) Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland |
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| Abstract: | We propose improvements in the “non-local” parameterization scheme of the convective boundary layer. The countergradient terms
for components of the momentum fluxes are introduced in a form analogous to those for other scalars. The scheme also includes
explicit expressions for entrainment fluxes of momentum, temperature, and humidity. A simplified procedure for calculating
the boundary-layer height is proposed, consisting of two steps: the evaluation of the convection level, followed by the assessment
of the depth of the interfacial layer. |
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| Keywords: | Boundary-layer parameterization Convective boundary layer Entrainment fluxes Non-local parameterization scheme |
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