摘要
本文从热量平衡方程出发,考虑陆、气系统随机外力的作用导出了一个二次随机振动的陆、气系统相互作用的气候模型。由该模型得出:陆、气系统地温存在着两类准周期振荡,一类是4—9个月的准半年周期振荡;另一类是2—3年的准周期振荡,且发现周期随某些气候参量的变化存在着极小值。另外还发现系统的自反馈作用和相互作用在两类周期振荡过程中的相对重要性是不同的。
In this paper, considering stochastic forcing action in land-air system, the second order stochastic fluctuation climate model of land-air interaction is derived by using the thermodynamic equilibrium equation. It is found that there are two kinds of quasi-periodic oscillations in subsurface temperature departure, one is the oscillation of quasi-six months ranging from four to nine-months; the other, from two to three-years, and that there is a minimum period with the changes of some climate parameters. It is also found that the relative importance of both the interaction and self-feedback action in , land-air system for above-mentioned two periodic oscillations is different.
出处
《高原气象》
CSCD
北大核心
1991年第1期43-51,共9页
Plateau Meteorology
关键词
陆气
振荡
周期
气候模型
Land-air system
Stochastic fluctuation
Minimum period
Feedback coefficient
