Interpolation of the wind field in a terrain following coordinate system over complex topography |
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Institution: | 1. School of Energy Science and Engineering, Central South University, Changsha, China;2. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, China |
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Abstract: | In mesoscale modelling of the atmosphere and in dispersion calculations often a terrain following, and therefore nonrectangular, coordinate system is used. In this paper the following questions are handled in a unified scheme: interpolation on such a nonrectangular grid, definition of the boundaries of a single cell and calculation of its volume. The interpolation is done in a boundary-following way and results in a rational interpolation formula. For comparison, two classical interpolation methods are briefly reviewed. |
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