| 超长波活动若干问题的分析 |
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| 引用本文： | 沙文钰,张穗民. 超长波活动若干问题的分析[J]. 气象学报, 1986, 44(3): 373-377 |
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| 作者姓名： | 沙文钰 张穗民 |
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| 作者单位： | 空军气象学院(沙文钰)，空军气象学院(张穗民) |
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| 摘 要： | 超长波和Rossby长波的动力学特征不同。许多作者采用沿纬圈方向分离出波数为1,2,3波的波动进行研究超长波的特征,得到有一定实践意义的结论。在理论分析上,章基嘉从Burger模式出发,首次得到超长波活动很有意义的动力学特性。实际大气运动中,各种尺度的波动总是重叠在一起,彼此作用,互为影响。但超长波受地形、热源及比它更小的波能量反馈控制的,是一个被动系统。因此在准地转近似下,有可能将超长波单独处理。
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| 收稿时间： | 1984-07-12 |
| 修稿时间： | 1985-07-08 |
SOME ASPECTS OF ULTRA-LONG WAVES ACTIVITIES |
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| Sha Wenyu and Zhang Suimin. SOME ASPECTS OF ULTRA-LONG WAVES ACTIVITIES[J]. Acta Meteorologica Sinica, 1986, 44(3): 373-377 |
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| Authors: | Sha Wenyu and Zhang Suimin |
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| Affiliation: | Institute of Meteorology, P. L. A. Air Force;Institute of Meteorology, P. L. A. Air Force |
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| Abstract: | In this paper, the influences of topography and heating on the ultra-long waves are discussed by means of a quasigeostrophic three-layer baroclinic model. A linearized model is obtained by introducing a kind of total stream function. The wave speed and the variety rate of amplitude with time is solved from this model. The physical causes of both are discussed and the more genera characteristics are obtained. |
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