南亚高压活动特征及其天气气候影响研究进展

南亚高压是夏季亚洲南部对流层上层和平流层底层的一个强大而稳定的大气活动中心,是副热带高压系统中的一个重要成员,它与夏季北半球大气环流和亚洲区域天气气候关系密切.关于南亚高压的研究,气象学者进行了很多研究工作,取得一些开创性成果,并逐渐认识到南亚高压的演变对北半球及我国天气气候的重要性.通过总结南亚高压的形成原因、结构,季节变化、年际变化、东西振荡及其对我国天气、气候的影响等方面的研究成果,简要回顾了近几十年极涡的研究及其与南亚高压的一些初步关系,指出这两个系统之间的相互作用、变化规律和异常特征存在的具体关系,是一个研究较少的重要问题,应加强这方面的研究.

Advances in Researches on Activities and Influences of South Asia High on Weather and Climate

South Asia High (SAH) is a strong and steady center of atmosphere activity in summer, which exits at the top of the troposphere and the bottom of the stratosphere over the southern Asia. It is an important member of the subtropical high system and has close relationship with the atmosphere circulation in Northern Hemisphere in summer and weather and climate in Asia regions. There has been a great deal of research findings on South Asia High published in recent years, and the significance of the evolution of South Asia High to weather and climate in China and in Northern Hemisphere is recognized gradually. A review is made for the formation causes, structures, seasonal change, interannual change, and longitudinal oscillation of South Asia High and its influences on weather and climate in China. Meanwhile, the advances in Polar Vortex research in recent years and its relation with SAH are discussed briefly. It is important to reinforce the study of the mutual relations, variation rules and abnormal characteristics of South Asia High and Polar Vortex.