Simulation of monsoon boundary-layer processes using a regional scale nested grid model |
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Authors: | Kiran Alapaty Sethu Raman R V Madala |
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Institution: | (1) Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, 27695-8208, N.C., USA;(2) Naval Research Laboratory, 20375 Washington, D.C., USA |
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Abstract: | A nested grid regional model with a high vertical resolution in the atmospheric boundary layer is used to simulate various atmospheric processes during an active monsoon period. A turbulence kinetic energy closure scheme is used to predict the boundary-layer structure. Model predictions indicate different structures of the boundary layer over land and oceans, as observed. Significant diurnal variation in boundary-layer structure and associated processes is predicted over land and negligible variations over oceans. The Somali jet over the Arabian Sea is well predicted. Location of the predicted monsoon depression and the associated rainfall are in good agreement with the observations. Also, predicted rainfall and its spatial distribution along the west coast of India are in good agreement with the observations. |
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