Eastward-moving convection-enhanced modons in shallow water in the equatorial tangent plane

Literature
Maintained by Masoud Rostami
Created at 5.2.2019

Abstract

We report a discovery of steady long-living slowly eastward moving large-scale coherent twin cyclones, the equatorial modons, in the shallow water model in the equatorial beta-plane, the archetype model of the ocean and atmosphere dynamics in tropics. We start by constructing analytical asymptotic modon solutions in the non-divergent velocity approximation and then show by simulations with a high-resolution numerical scheme that such configurations evolve into steady dipolar solutions of the full model. In the atmospheric context, the modons persist in the presence of moist convection, being accompanied and enhanced by specific patterns of water-vapour condensation.

Bibliography

Rostami, M., Zeitlin, V. (2019): Eastward-moving convection-enhanced modons in shallow water in the equatorial tangent plane. AIP – In: Physics of Fluids, Vol. 31, DOI: 10.1063/1.5080415

authorRostami, Masoud and Zeitlin, Vladimir
doi10.1063/1.5080415
journalPhysics of Fluids
keyMasoudRostami2019
publisherAIP
typearticle
urlhttps://doi.org/10.1063/1.5080415
volume31
year2019
Currently offline, some contents may be unavailable