西太平洋副热带高压非线性稳定性问题的研究  

A Study of Non-linear Stability of the Western-Pacific Subtropical High

作　　者：张韧[1] 史汉生[1] 喻世华[1] 

机构地区：[1]南京空军气象学院

出　　处：《大气科学》1995年第6期687-700,共14页Chinese Journal of Atmospheric Sciences

基　　金：国家自然科学基金

摘　　要：本文采用了包含热力强迫和涡动耗散的三维非线性动力学模式，从系统稳定性的角度出发，探讨了夏季东亚副热带地区的环流状况，东亚大陆季风雨带和南海季风槽雨带的凝结加热以及扰动流的相互作用等因素对西太平洋副热带高压进退的制约和影响。给出了反映系统稳定性状况的能量判据，井据此进行了动力学分析和模式大气的计算。研究结果为一些天气分析事实提供了动力学解释，得到了一些新的见解，并为判断和预测西太平洋副热带高压在东亚上空的活动提供了参考依据。The restriction and influence on the systematical stability of the western Pacific subtropical high exerted by the factors of circulation pattern of East Asia subtropical region, monsoon rain belt in continental East Asia, monsoon trough rain belt in the South China Sea and western Pacific, and the non-linear interaction of disturbance flows are studied using a non-linear dynamic model including heat force and vortex dissipation. The energy criterion reflecting systematical stability is shown. Dynamical analysis and model atmosphere computation are also carried out based on the energy cirterion. The dynamic explanation of some weather facts is provided. The research results and views provide criteria of judging and predicting the shift of the western Pacific subtropical high.

关 键 词：西太平洋 副热带高压 非线性 稳定性 气压 

分 类 号：P732.3[天文地球—海洋科学]