Comprehensive Parametrization of Surface-Layer Transfer Coefficients for Use in Atmospheric Numerical Models |
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| Authors: | Hendrik Wouters Koen De Ridder Nicole P M van Lipzig |
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| Institution: | 1. VITO??Flemish Institute for Technological Research, Boeretang 200, 2400, Mol, Belgium
2. Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E, 3001, Leuven, Belgium
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| Abstract: | A new non-iterative bulk parametrization for surface-layer transfer coefficients for momentum and heat is presented. It is applicable for a wide range of aerodynamic and thermal roughness lengths, and includes the effect of the roughness sublayer. As a consequence, the non-iterative method is suitable for every surface type, especially for urban surfaces for which existing non-iterative parametrizations fail. The analytical approximation compares very well with an iterative approach. Our method can be easily implemented in atmospheric numerical models that already employ a non-iterative approach. |
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