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Prediction on the depth of Great Red Spot by a rotating convection model

Presentation #508.07 in the session Origin and Evolution of Giant Planet Systems II (Oral Presentation)

Published onOct 23, 2023
Prediction on the depth of Great Red Spot by a rotating convection model

The Great Red Spot is one of the most prominent features in Jupiter’s atmosphere. However, its depth and formation mechanism are still unclear. Here we propose a rotating convection model to explain its formation. We find that large-scale anticyclones, similar to the Great Red Spot, can be spontaneously generated in rapidly rotating convection when the convective Rossby number is smaller than a certain critical value. From this critical value, we infer that the depth of the Great Red Spot should be deeper than 500 kilometers. This prediction can be applied to Jupiter’s large-scale circumpolar vortices as well. The result suggests that both the Great Red Spot and circumpolar vortices are probably deeply rooted. This work is supported by NSFC 12173105.

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