| 热带平流层低层的对称运动和反对称运动 |
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| 引用本文： | 杨云峰.热带平流层低层的对称运动和反对称运动[J].大气科学,1991,15(3):77-86. |
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| 作者姓名： | 杨云峰 |
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| 作者单位： | 国家气象中心数值室 |
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| 摘 要： | 文章从对赤道β平面上静止大气中线性方程分解着手,得出控制对称运动和反对称运动方程组,对方程求解,从理论上证实在热带子流层低层中存在两种特殊性质的运动即对称运动和反对称运动,并证实赤道Kelvin波是典型的对称运动,而混合罗斯贝-重力波是反对称运动。文章分析了非绝热加热对对称运动和反对称运动的影响,当非绝热加热为唯一的外源扰动时,对称的非绝热加热是产生Kelvin波的重要条件,而反对称的非绝热加热是产生赤道区域平流层混合罗斯贝-重力波的重要条件。另外,随着非绝热加热增加,对称运动和反对称运动强度也增加。
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| 关 键 词： | 热带 平流层 对称与反对称运动 非绝热加热 |
Symmetric and antisymmetric motions of stratospheric lower level in equatorial area |
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| Yang Yunfeng.Symmetric and antisymmetric motions of stratospheric lower level in equatorial area[J].Chinese Journal of Atmospheric Sciences,1991,15(3):77-86. |
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| Authors: | Yang Yunfeng |
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| Institution: | NWPD National Meteorological Centre |
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| Abstract: | Equations of symmetric motion and antisymmetric one are obtained. Through solving equations analytically, it is proved theoretically that there are two special motions-symmetric motion and antisymmetric one.The effects of diabatic heating on the symmetric motion and the antisymmetric motion are also discussed. The symmetric diabatic-heating is responsible for the Kelvin wave, and the antisymmetric diabatic-heating for the mixed Rossby-gravity wave. The amplitudes of symmetric and antisymmetric motions increase with the increasing of diabatic-heating intensity . |
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| Keywords: | Tropical zone Stratosphere Symmetric and Antisymmetric motions Diabatic heating |
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