A Procedure for the Derivation of Surface-Layer Bulk Relationships from Simplified Second-Order Closure Models

Abstract

abstractEN: A procedure for the derivation of surface layer bulk relationships from simplified second-order closure models is presented. Although a specific model [ the Mellor -Yamada level-2 model (Mellor and Yamada 1982)] was used as an example, the procedure may be applied to a broader class of simplified second-order turbulence parameterization schemes. For the special case of the level-2 model, approximating formulas are given for direct calculation of fluxes from the wind speed and temperature difference across the surface layer. These approximations are especially recommended for models that use Mellor-Yamada closure schemes.score: 30collation: 126-13