Algebraic rossby solitary wave and blocking in the atmosphere |
| |
Authors: | Luo Dehai and Ji Liren |
| |
Institution: | (1) Institute of Atmospheric Physics, Academia Sinica, Beijing |
| |
Abstract: | In this paper, the atmosphere is divided into two regions which are governed by different equations. Furthermore, multiple-scale
method is used to obtain the Benjamin-Ono equation satisfied by the nonlinear Rossby wave in weak shear zonal flow. The equation
has algebraic solitary wave solution, and the stationary streamfunction fields in-ithe atmosphere are calculated by using
numerical method, and the results demonstrate that the stationary solution is antisymmetric dipoles with the anticyclone north
of the cyclone, and the structure is similar to the equivalent modon obtained by Mcwilliams (1980). Because the modon obtained
here is an algebraic solitary wave, the modon may be called “algebraic modon”, and the stationary algebraic modon is consistent
with observations of blocking pattern in the atmosphere. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
| 点击此处可从《大气科学进展》下载免费的PDF全文 |
|