摘要
回顾了20世纪50年代以来有关青藏高原的动力学作用及其对我国天气、气候影响方面的研究工作,对高原动力学研究方面取得的成果进行综述。主要结果归纳为:1高原热力和动力作用对大气的影响存在季节性差异,冬、春季动力作用强于热力作用;2高原动力作用主要体现在绕流方面,冬、春季北半球中纬度西风经过高原的绕流与爬坡现象明显,而夏季则主要以绕流作用为主;3高原对寒潮、西南涡、热带气旋等天气系统有阻挡和屏障作用,对其系统的发生发展和移动路径都有重要影响;4高原对气候系统的阻挡和对季风的牵引作用,形成我国西北干旱,江南、华南湿润的气候背景。
The major advances in the researches on the dynamic effect of the Tibetan Plateau on weather and climate are summarized. It is concluded： （1） The thermal and dynamic effects of the plateau have seasonal differences. Dynamic effects are stronger in winter and spring. （2） The dynamic effects are embodied mainly in the aspect of the flow around the plateau, especially in bypassing and climbing induced by the plateau in winter and spring, but there is only bypassing effect in summer. （3） The plateau has important influence on weather systems such as cold wave, southwest vortex, and tropical cyclone. （4） Through blocking the climate system and drawing the monsoon, the plateau makes Northwest China dry and South China humid.
出处
《气象科技》
2014年第6期1039-1046,共8页
Meteorological Science and Technology
基金
国家重点基础研究发展规划项目(2010CB428505)
国家自然科学基金项目(40921003)资助
关键词
青藏高原
动力作用
绕流
爬坡
Tibetan Plateau, dynamic effect, bypassing, climbing
