摘要
文章通过对低频变异研究的历史回顾以及观测事实的诊断分析，结合预报实践中的经验，从天气、气候学的角度提出了对阻塞高压（以下简称阻高）流型形成及维持的分析和看法。文中强调了阻高上游的低槽加深东移、海温变化以及地形作用是促使阻高异常的重要因素。并从斜压（瞬变波）同阻塞流的配置关系的角度出发，研究了乌拉尔山阻高维持过程中的波与流相互作用，为从理论上进一步探讨阻高形成的机理初步奠定了基础。
In this paper the history of studying the low frequency variation is reviewed.An analysis and some of synoptic/climatological points of view is put forward on the formation and maitainance of the blocking flow pattern through the diagnoses of observation facts combined with some experiences in forecast practice.It is emphases that the eastward steepening of low troughs in the upstream of the blocking high,the SST variation and the topography effect are the major factors influencing the variation of the blocking high.The wave flow interaction during the maintenance of Woollier Mountain blocking high is studied through the layout of the baroclinic trough (transient wave) and the blocking flow.This will give a primary basis for the further theoretical study on the formation mechanism of the blocking high.
出处
《气象学报》
CSCD
北大核心
1998年第6期665-680,共16页
Acta Meteorologica Sinica
基金
国家自然科学基金
关键词
低频变异
阻塞高压
波流相互作用
大气
Low frequency variation,Blocking high,Wave flow interaction.
