The iconic stripes and giant storms on Jupiter are actually caused by the way the atmosphere bumps into the planet's internal floor.
This study used spherical flow models to explain why gas giants have such distinct belt-like patterns. It turns out that the interaction between the planet's rotation and its internal topography traps flow at the poles while stretching it out at the equator. This mathematical proof shows that these stripes are an inevitable result of a rotating atmosphere on a sphere. Previously, scientists struggled to explain why these patterns are so stable over decades. This discovery provides a universal rule for how atmospheres behave on any fast-spinning world.
Minimum-enstrophy solutions in topographic quasi-geostrophic flow on the rotating sphere
arXiv · 2604.25600
The minimum-enstrophy theory of Bretherton and Haidvogel postulates that two-dimensional turbulent systems evolve to a state that minimises enstrophy at a fixed energy level. We extend this to the rotating spherical quasi-geostrophic setting, accounting for bottom topography and the fully nonlinear Coriolis effect, resulting in latitude-dependent effects not present in planar approximations. We prove existence and nonlinear stability of minimum-enstrophy solutions and describe analytically asymp