| Applications of Conditional Nonlinear Optimal Perturbation to the Study of the Stability and Sensitivity of the Jovian Atmosphere |
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| 作者姓名： | 姜智娜 |
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| 作者单位： | [1]State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 [2]Graduate University of the Chinese Academy of Sciences, Beijing 100039 |
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| 基金项目： | The work was jointly supported by the Chinese Academy of Sciences （Grant No. KZCX3-SW-230） and the National Natural Science Foundation of China （Grant Nos. 40233029 and 40221503）. This work was finished under the guidance of Prof. Mu Mu, and great thanks are given to Prof. Zhiyue Zhang for his help in drawing the figures. |
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| 摘 要： | A two-layer quasi-geostrophic model is used to study the stability and sensitivity of motions on smallscale vortices in Jupiter’s atmosphere. Conditional nonlinear optimal perturbations (CNOPs) and linear singular vectors (LSVs) are both obtained numerically and compared in this paper. The results show that CNOPs can capture the nonlinear characteristics of motions in small-scale vortices in Jupiter’s atmosphere and show great difference from LSVs under the condition that the initial constraint condition is large or the optimization time is not very short or both. Besides, in some basic states, local CNOPs are found. The pattern of LSV is more similar to local CNOP than global CNOP in some cases. The elementary application of the method of CNOP to the Jovian atmosphere helps us to explore the stability of variousscale motions of Jupiter’s atmosphere and to compare the stability of motions in Jupiter’s atmosphere and Earth’s atmosphere further.
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| 关 键 词： | 稳定性 灵敏度 大气干扰 大气环流 |
| 收稿时间： | 2005-09-16 |
| 修稿时间： | 2006-02-23 |
Applications of conditional nonlinear optimal perturbation to the study of the stability and sensitivity of the Jovian atmosphere |
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| Zhina Jiang.Applications of Conditional Nonlinear Optimal Perturbation to the Study of the Stability and Sensitivity of the Jovian Atmosphere[J].Advances in Atmospheric Sciences,2006,23(5):775-783. |
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| Authors: | Zhina Jiang |
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| Institution: | State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, Graduate University of the Chinese Academy of Sciences, Beijing 100039 |
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| Abstract: | A two-layer quasi-geostrophic model is used to study the stability and sensitivity of motions on small-scale vortices in Jupiter's atmosphere. Conditional nonlinear optimal perturbations (CNOPs) and linear singular vectors (LSVs) are both obtained numerically and compared in this paper. The results show that CNOPs can capture the nonlinear characteristics of motions in small-scale vortices in Jupiter's atmosphere and show great difference from LSVs under the condition that the initial constraint condition is large or the optimization time is not very short or both. Besides, in some basic states, local CNOPs are found. The pattern of LSV is more similar to local CNOP than global CNOP in some cases. The elementary application of the method of CNOP to the Jovian atmosphere helps us to explore the stability of various- scale motions of Jupiter's atmosphere and to compare the stability of motions in Jupiter's atmosphere and Earth's atmosphere further. |
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| Keywords: | stability sensitivity conditional nonlinear optimal perturbation singular vector |
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