副热带高压研究回顾及对几个基本问题的再认识

REVIEWS ON THE STUDY OF THE SUBTROPICAL ANTICYCLONE AND NEW INSIGHTS ON SOME FUNDAMENTAL PROBLEMS

中文关键词:  副热带高压  下沉运动  外界强迫  时间尺度  动量平衡

英文关键词:Subtropical anticyclone  Vertical sinking motion  External forcing  Time scale  Conservation of angular momentum

中文摘要:

      文中在回顾有关副热带高压研究的基础上,指出传统的观念在东太平洋副热带高压和西太平洋副热带高压的关系、下沉运动和副热带高压的形成、热带加热异常与副热带高压异常的关系、副热带高压与其周边系统的关系等问题上存在一定的局限.并根据近期的研究成果对上述问题给出新的认识.最后文中展望了在副热带高压的研究中需进一步深入的几个方面:不同纬度相互作用、青藏高原的作用、时间尺度-内部动力过程和外界强迫的相对重要性、非线性过程和角动量平衡问题.

英文摘要:

      The studies on the subtropical anticyclone are reviewed.It is pointed out that some traditional concepts in this field are inadequate and need to be re-considered.These include the relationships between the eastern Pacific subtropical anticyclone and the western Pacific subtropical anticyclone,the vertically sinking motion and the formation of the subtropical anticyclone,the anomalous heating in the tropical area and the anomalies of the subtropical anticyclone,and the western Pacific subtropical anticyclone and its surrounding systems etc.Some important issues for further studies in understanding and predicting the variations of the subtropical anticyclone are raised.These include the circulation interactions among different latitudes,the roles of the Tibetan Plateau,the relative importance of internal forcing and external forcing in different time scales,the nonlinear processes along the ridges of subtropical anticyclone and the constrain of the conservation of angular momentum.