Parameterization of Subgrid Topographic Slope and Orientation in Numerical Model and Its Effect on Regional Climate Simulation

ZHU Xin-sheng;ZHANG Yao-cun

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Plateau Meteorology ›› 2005, Vol. 24 ›› Issue (2) : 137-142.

Parameterization of Subgrid Topographic Slope and Orientation in Numerical Model and Its Effect on Regional Climate Simulation

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Abstract

It is a very important and difficult problem to deal with complex terrain effectively in numerical weather forecast and climate models. A parameterization scheme of subgrid topographic slope and orientation in a p-σ regional climate model developed in Nanjing University has been proposed to improve the calculation of surface energy balance in the regional climate model over complex terrain areas. Numerical experiment results by using p-σ regional climate model show that the parameterization scheme of subgrid topographic slope and orientation can improve the simulation of 500 hPa geopotential height and especially the summer rainfall over East Asia.

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Subgrid topography / Terrain slope and or / Regional climate sim

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ZHU Xin-sheng , ZHANG Yao-cun. Parameterization of Subgrid Topographic Slope and Orientation in Numerical Model and Its Effect on Regional Climate Simulation. Plateau Meteorology. 2005, 24(2): 137-142

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