| 全球气侯长期振动的Fokker-Planck方程及其求解 |
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| 引用本文： | 封国林,曹鸿兴,邵耀椿,曹永忠.全球气侯长期振动的Fokker-Planck方程及其求解[J].气象学报,1996,54(6):753-758. |
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| 作者姓名： | 封国林 曹鸿兴 邵耀椿 曹永忠 |
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| 作者单位： | 扬州大学农学院基础课部，中国气象科学研究院 |
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| 基金项目： | 国家自然科学基金,扬州大学农学院院青年基金 |
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| 摘 要： | 假定行星反照率为温度的平方关系，导出了零维随机动力气候模式。对相应的ＦｏｋｋｅｒＰｌａｎｃｋ方程用矩阵连分法求解，得到了１０万年，４万年，２万年气候周期的本征值和本征向量。数值计算表明，在随机噪声强度Ｄ＝１．９５时，１０万年气候振动具有最大的振幅，即Ｍｉｌａｎｋｏｖｉｔｃｈ理论无法解释的１０万年周期。
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| 关 键 词： | 零维气候模式，Fokker－Planck方程，矩阵连分法 |
| 收稿时间： | 1995/1/23 0:00:00 |
| 修稿时间： | 9/4/1995 12:00:00 AM |
FOKKER-PLANCK EQUATION OF LONG-TERM GLOBAL CLIMATIC FLUCTUATION AND ITS SOLUTION |
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| Feng Guolin,Cao Hongxing,Sao Yaochun and Cao Yongzhong.FOKKER-PLANCK EQUATION OF LONG-TERM GLOBAL CLIMATIC FLUCTUATION AND ITS SOLUTION[J].Acta Meteorologica Sinica,1996,54(6):753-758. |
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| Authors: | Feng Guolin Cao Hongxing Sao Yaochun and Cao Yongzhong |
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| Institution: | Department of Basic Science, Yangzhou University, Yangzhou, 225009;Chinese Academy of Meteorological Sciences, Beijing, 100081;Department of Basic Science, Yangzhou University, Yangzhou, 225009;Department of Basic Science, Yangzhou University, Yangzhou, 225009 |
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| Abstract: | Assuming the planetary albedo is equal to a temperature square. a zero-dimensional stochastic-dynamic climate model has been suggested. The appropriate Fokker-Planck equation is solved by use of the matrix continude-fraction method, eigen values and eigen vectors of 100 000a, 40 000a and 20 000a climatic periods are obtained. It is shown from the numerical computation that the climatic fluctuation of 100 000a has maximum amplitude when taking intensity of random noise D = 1. 95. the fluctuation is not explained with the Milankovitch theory. |
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| Keywords: | Zero-dimensional climate model Fokker-Planck equation Matrix continued-fraction method |
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