A close study of 40 years' worth of data has revealed something a little hinky going on with Jupiter.
Scientists never expected Jupiter to experience significant cycles in temperature variation, but until now, long-term datasets on the planet's heat profile haven't been available to check whether this was the case. Until now.
To their surprise, they found temperature fluctuations with periodicities of 4, 7 to 9, and 10 to 14 years, involving different latitude bands. These seem disconnected, they found, from seasonal temperature variations. It's unclear what drives or links these temperature fluctuations, but a clue can be found higher in Jupiter's atmosphere, in the clear stratospheric layer that sits above the cloudy troposphere. At Jupiter's equator, temperature variations in the troposphere are matched by an opposite variation in the stratosphere. This suggests that whatever is happening at higher altitudes is influencing what is happening below, or vice versa.
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