Publications


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

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.

Resources

url https://doi.org/10.1063/1.5080415 Accessed 16 times | Last updated 05.02.2019
pdf Rostami2019_POF.pdf Accessed 20 times | Last updated 05.02.2019

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

Authors Rostami, Masoud and Zeitlin, Vladimir
Type article
Title Eastward-moving convection-enhanced modons in shallow water in the equatorial tangent plane
URL https://doi.org/10.1063/1.5080415
DOI 10.1063/1.5080415
Journal Physics of Fluids
Year 2019
Volume 31
Publisher AIP
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