Abstract
By adopting the idea of three-dimensional Walker, Hadley and Rossby stream functions, the global atmospheric circulation can be considered as the sum of three stream functions from a global perspective. Therefore, a mathematical model of three-dimensional decomposition of global atmospheric circulation is proposed and the existence and uniqueness of the model are proved. Besides, the model includes a numerical method leading to no truncation error in the discrete three-dimensional grid points. Results also show that the three-dimensional stream functions exist and are unique for a given velocity field. The mathematical model shows the generalized form of three-dimensional stream functions equal to the velocity field in representing the features of atmospheric motion. Besides, the vertical velocity calculated through the model can represent the main characteristics of the vertical motion. In sum, the three-dimensional decomposition of atmospheric circulation is convenient for the further investigation of the features of global atmospheric motions.
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Supported by the National Basic Research Program of China (Grant Nos. 2006CB403607 and 2006CB400503), the National Natural Science Foundation of China (Grant Nos. 40475027 and 40575028)
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Liu, H., Hu, S., Xu, M. et al. Three-dimensional decomposition method of global atmospheric circulation. Sci. China Ser. D-Earth Sci. 51, 386–402 (2008). https://doi.org/10.1007/s11430-008-0020-9
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DOI: https://doi.org/10.1007/s11430-008-0020-9