Quasi-Stationary Waves in the Southern Hemisphere. Part II: Generation Mechanisms
Quasi-Stationary Waves in the Southern Hemisphere. Part II: Generation Mechanisms
复制标题
南半球的准稳态波。
DOI：
10.1175/1520-0442(1995)008
复制
发表时间：
1995
影响因子：
4.9
通讯作者：
C. Mechoso
中科院分区：
文献类型：
--
作者：
A. Quintanar;C. Mechoso
Abstract In this Part II the authors investigate the role that Antarctic elevations, the rest of the world orography, thermal forcing from lower latitudes, and the transient eddy component of the flow play on the generation of the quasi-stationary wave field in the Southern Hemisphere. An approach based on the UCLA GCM is followed. Results from a control simulation with full orography and from experiments without the Antarctic elevations and without the rest of the world orography, suggest that the quasi-stationary wave with zonal wavenumber 1 (QS-wave 1) around Antarctica is primarily generated by mechanisms other than the Antarctic elevations. Comparison of a three-dimensional Eliassen-Palm flux vector in the control simulation, and those where the Antarctic elevation and the rest of the world orography are removed, suggests that wave activity propagates both from the subtropics and from polar latitudes. Although in qualitative agreement with results of Part I, the horizontal and vertical structure of t...
