摘要
考察了一般多层准地转模式中初值与参数共同扰动的情形。在初始扰动场仅依赖于初始扰动位势涡度、初始扰动边界速度环量与扰动参数的条件下 ,给出了扰动能量、扰动位涡拟能发展上 (下 )界精细的显式估计。进而在Lyapunov意义下广义非线性稳定性概念的基础上 ,得到了对应于Arnold第二定理的非线性稳定性判据。本文工作推广了仅考虑模式中初值扰动情形所得到的相应结果。
The status of disturbance of both initial values and parameters in the model is investigated, and the exact estimations of the disturbance energy and disturbance potential enstrophy are given, when the initial disturbance fields depend only on the initial disturbance enstrophy, initial disturbance velocity circulation along the boundary, and the disturbance parameters. And based on the concept of generalized nonlinear stability in the sense of Lyapunov, the nonlinear stability criteria paralleling to Arnold's second theorem are obtained. The results of this paper generalize the findings, in which only the initial value disturbances are considered.
出处
《大气科学》
CSCD
北大核心
2000年第3期412-426,共15页
Chinese Journal of Atmospheric Sciences
关键词
准地转运动
初值
扰动
非线性稳定性
位势涡度
quasi-geostrophic motion
disturbances of both initial values and parameters
nonlinear stability
