Spontaneous Generated Convective Anticyclones in Low Latitude -- A Model for the Great Red Spot

Abstract

The Great Red Spot at about latitude $22^{\circ }S$ of Jupiter has been observed for hundreds of years, yet the driving mechanism on the formation of this giant anticyclone still remains unclear. Two scenarios were proposed to explain its formation. One is a shallow model suggesting that it might be a weather feature formed through a merging process of small shallow storms generated by moist convection, while the other is a deep model suggesting that it might be a deeply rooted anticyclone powered by the internal heat of Jupiter. In this work, we present numerical simulations showing that the Great Red Spot could be naturally generated in a deep rotating turbulent flow and survive for a long time, when the convective Rossby number is smaller than a certain critical value. From this critical value, we predict that the Great Red Spot extends at least about 500 kilometers deep into the Jovian atmosphere. Our results demonstrate that the Great Red Spot is likely to be a feature deep-seated in the Jovian atmosphere.

accepted to ApJ

References in corpus (10)

• Structure and Evolution of Giant Cells in Global Models of Solar Convection
• Inverse cascade and symmetry breaking in rapidly-rotating Boussinesq convection
• Large-scale vortices in rapidly rotating Rayleigh-Bénard convection
• Atmospheric Circulation of Brown Dwarfs: Jets, Vortices, and Time Variability
• Solar overshoot region and small-scale dynamo with realistic energy flux
• Generation of magnetic fields by large-scale vortices in rotating convection
• Deep rotating convection generates the polar hexagon on Saturn
• Deep convection-driven vortex formation on Jupiter and Saturn
• Remote determination of the shape of Jupiter's vortices from laboratory experiments
• Determining the depth of Jupiter's Great Red Spot with Juno: a Slepian approach

Cited by in corpus (1)

• The Origin of Jupiter's Great Red Spot