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math.AP2025
Classification of atmospheric traveling waves at cloud level
Adrian Constantin, Zhiwu Lin, Hao Zhu
We classify within the quasi-geostrophic framework all types of traveling waves in zonal bands of the planetary atmosphere at cloud level according to their wave speeds. This class…
math.AP2025
The onset of instability for zonal stratospheric flows
Adrian Constantin, Pierre Germain, Zhiwu Lin +1
We investigate some qualitative aspects of the dynamics of the Euler equation on a rotating sphere that are relevant or stratospheric flows. Zonal flow dominates the dynamics of th…
math.AP2024
On the onset of filamentation on two-dimensional vorticity interfaces
Adrian Constantin, David Dritschel, Pierre Germain
We study an asymptotic nonlinear model for filamention on two-dimensional vorticity interfaces. Different re-formulations of the model equation reveal its underlying structural pro…