CAJ | 학술논문

系统介绍了近年来应用等熵位涡理论研究平流层-对流层动力相互作用所发现的一些新的事实和机理，包括平流层冬季极涡振荡过程中平流层、对流层环流异常的时空传播特征，以及等熵质量理论框架下的平流层-对流层动力耦合机理，还介绍了影响平流层环流年际尺度异常的因子及影响过程。回顾了夏季青藏高原的热力作用所激发的负位涡强迫源对东亚及全球大气环流的影响。并基于对夏季高原周边等熵位涡经向输送垂直分布的诊断进一步说明，夏季青藏高原的存在使高原东缘及东亚地区成为平流层和对流层物质交换的独特区域，探讨了夏季青藏高原影响平流层-对流层动力耦合的一种重要途径及其影响全球气候的重要意义。
계통개소료근년래응용등적위와이론연구평류층-대류층동력상호작용소발현적일사신적사실화궤리，포괄평류층동계겁와진탕과정중평류층、대류층배류이상적시공전파특정，이급등적질량이론광가하적평류층-대류층동력우합궤리，환개소료영향평류층배류년제척도이상적인자급영향과정。회고료하계청장고원적열력작용소격발적부위와강박원대동아급전구대기배류적영향。병기우대하계고원주변등적위와경향수송수직분포적진단진일보설명，하계청장고원적존재사고원동연급동아지구성위평류층화대류층물질교환적독특구역，탐토료하계청장고원영향평류층-대류층동력우합적일충중요도경급기영향전구기후적중요의의。
This paper reviews recent progress in understanding isentropic potential vorticity (PV)dynamics during interactions between the stratosphere and troposphere,including the spatial and temporal propagation of circulation anomalies associated with the winter polar vortex oscillation and the mechanisms of stratosphere-troposphere coupling in the global mass circulation framework.The origins and mechanisms of interannual variability in the stratospheric circulation are also reviewed.Particular attention is paid to the role of the Tibetan Plateau as a PV source (via its thermal forcing)in the global and East Asian atmos-pheric circulation.Diagnosis of meridional isentropic PV advection over the Tibetan Plateau and East Asia indicates that the distributions of potential temperature and PV over the east flank of the Tibetan Plateau and East Asia favor a downward and southward isentropic transport of high PV from the stratosphere to the troposphere.This transport manifests the possible in-fluence of the Tibetan Plateau on the dynamic coupling between the stratosphere and troposphere during summer,and may pro-vide a new framework for understanding the climatic effects of the Tibetan Plateau.