热带大气季节内振荡的几个基本问题

SOME FUNDAMENTAL PROBLEMS OF INTRASEASONAL OSCILLATION IN THE TROPICAL ATMOSPHERE

关键词:  热带大气  季节内振荡  基本特征  与E1 Nino相互作用  动力学机制

Key words:  Tropical atmosphere  Intraseasonal oscillation  Fundmental feature  Interaction with E1 Nino  Dynamical mechanism

摘要:

在一系列资料分析、数值模拟试验和理论研究的基础上,对热带大气季节内(30-60天)振荡的几个基本问题进行系统的综合讨论,包括热带大气季节内振荡的地域特征、空间尺度特征、水平传播特征、与中高纬度大气季节内振荡的联系、同E1Nino间的相互作用以及热带大气季节内振荡的动力学机制。通过讨论和分析,对热带大气季节内振荡得到一个更全面和更系统的认识。

Abstract:

Based on a series of data analyses, numerical simulations and theoretical studies, comprehensive discussions of some fundamental problems of intraseasonal oscillation in the tropical atmosphere are carried out in this paper. They include the regional location feature, spatial scale feature and horizontal propagation of 30-60 day oscillation; the relationship with intraseasonal oscillation in the mid-high latitudes; the interaction between E1 Nino and tropical intraseasonal oseillation and some dynamical mechanisms which excite tropical atmospheric intraseasonal oscillation. Throubrh these analyses and diseussions, it is hoped to have deeper and better-defined under standing of the intraseasonal oscillation in the tropical atmosphere.