| 非绝热加热在南亚高压建立和振荡中所起的作用 |
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| 引用本文： | 李维亮,缪锦海,樊云.非绝热加热在南亚高压建立和振荡中所起的作用[J].应用气象学报,1987,2(1):1-11. |
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| 作者姓名： | 李维亮 缪锦海 樊云 |
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| 作者单位： | 1.气象科学研究院气候研究所
(李维亮)，北京气象学院
(缪锦海)，北京气象学院(樊云) |
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| 摘 要： | 通过运用在β平面上准地转两层斜压高截断谱模式，在不同的非绝热加热和基本气流下进行计算，结果表明:1.南亚高压的建立和振荡是在外热力强迫参数取适当值的时候产生，热力强迫参数太强就可能出现混沌现象。2.当海陆热力差异减弱到某数值时，南亚高压变化就趋向于某一平衡态。3.当外界热力强迫只有经向不均匀，而无纬向不均匀加热时，不能形成南亚高压。
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The Effect of Diabatic Heating on the Formation of the South Asia High and Its Quasi-periodic Oscillation |
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| Affiliation: | 1) (Institute of Climatology, AMS); 2) (Beijing Institute of Meteorology) |
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| Abstract: | By using a quasi-geostrophic, two-level baroclinic highly truncated spectral model on a β plane, computations have been made in the cases with diabatic heating differently in basic current. The results are as follow: ① When the values of the parameter relevant to the external thermal forcing are selected properly, the establishment and oscillation of South Asia High may occur. On the other hand, the “chaos” phenomenon may appear if the greater values of the parameter of thermal forcing are taken. ② When the land-sea thermal contrast is reduced to a certain extent, the South Asia High tends to be in equilibrium state. ③ South Asia High cannot occur if there is only medional inhomogeneous external thermal forcing |
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