| 大气中动能的双向转化和单向转化 |
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| 引用本文： | 吴国雄.大气中动能的双向转化和单向转化[J].大气科学,1995,19(1):52-62. |
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| 作者姓名： | 吴国雄 |
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| 作者单位： | 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室,北京100080 |
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| 基金项目： | 本研究工作得到国际基础性研究重大关键项目“气侯动力学和气候预测理论研究”的支持 |
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| 摘 要： | 根据绝热无耗散大气总动能和总位涡拟能守恒的特性，本文讨论了二维平面上动能谱分布随时间变化的规律。结果表明，大气谱动能变化必然涉及至少三种不同的空间尺度；或遵从双向转化原则，或遵从单向转化原则。在讨论能量的双向转化和单向转化条件的基础上，本文还分别研究斜压大气和正压大气中能量转化的一般状况。
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| 关 键 词： | 特征变形波数 特征变形半径 广义特征尺度 |
Two Directional and One Directional Transfer of Atmospheric Kinetic Energy |
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| Wu Guoxing.Two Directional and One Directional Transfer of Atmospheric Kinetic Energy[J].Chinese Journal of Atmospheric Sciences,1995,19(1):52-62. |
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| Authors: | Wu Guoxing |
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| Abstract: | Based upon the properties of conservation of total kinetic energy and potential vorticity enstrophy,the temporal change of spectral kinetic energy in an adiabatic and non-dissipation atmosphere was studied.Results show that in such a general atmosphere when kinetic energy transfer occurs,there must be at least three wave components of different scales involved in the transfer.Such transfer takes the form of either two direction or one direction,depending on the fluid characteristic and the scales of waves involved in the transfer.Some features of kinetic energy transfer in general baroclinic and barotropic atmosphere are slao investigated. |
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| Keywords: | characteristic deformation wave number characteristic deformation wave radium generalized characteristic scale |
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