Null modes effect in Rossby wave model
- 1Radio Science Center for Space and Atmosphere (RASC), Kyoto University Gokasho, Uji, Kyoto 611-0011, Japan
- 2UFR de Mathématiques Pures et Appliqué es, Université de Lille 1, 59655 Villeneuve d’Ascq, France
Abstract. The problem of the null-modes existence and some particularities of their interaction with nonlinear vortex-wave-like structures is discussed. We show that the null-modes are fundamental elements of nonlinear wave fields. The conditions under which null-modes can manifest themselves are elucidated. The Rossby-Hasegawa-Mima (RHM) model is used for the illustration of features of null-modes-waves interactions.