Closure scheme for stably stratified turbulence without critical Richardson number

Abstract

Article highlights Second-order scheme in the framework of Mellor-Yamada type models employing new heat flux equations. The model does not exhibit a threshold for the gradient Richardson number. Mean wind and temperature profiles, and turbulent fluctuations equations as functions of the gradient Richardson number.

Keywords

• Atmospheric boundary layer
• Second-order closure model
• Turbulence parameterizations
• strong stratification
• Critical Richardson number