June 23rd, 2024

The Origin of Jupiter's Great Red Spot

Researchers led by Agustín Sánchez-Lavega investigate Jupiter's Great Red Spot (GRS) origin. Historical data differentiates it from the "Permanent Spot." Simulations suggest GRS formed from zonal jet interactions, evolving in velocity. Published in 2024.

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The Origin of Jupiter's Great Red Spot

The study titled "The Origin of Jupiter's Great Red Spot" by Agustín Sánchez-Lavega and colleagues explores the formation mechanism of Jupiter's Great Red Spot (GRS). The GRS is the largest and longest-lived vortex among all solar system planets, with its origin being a topic of debate. Historical observations suggest that the GRS is distinct from a dark oval known as the "Permanent Spot" observed in the 17th century. The researchers used numerical simulations to rule out theories of the GRS forming from vortex merging or superstorms. Instead, they propose that the GRS likely formed from a flow disturbance between opposing Jovian zonal jets. This suggests that the early GRS had a low tangential velocity, which increased over time as it shrank. The findings were published in Geophysical Research Letters in June 2024.

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Link Icon 2 comments
By @gorgoiler - 4 months
Peer review didn’t make it as far as the second word in the abstract!

> Jupiter's Grat Red Spot (GRS) is the largest and longest-lived vortex of all solar system planets but its lifetime is debated…

If the author is reading: you also have a typo of “early” towards the end of the abstract.

Best wishes!

By @ggm - 4 months
The implications that the spot can disappear inside the observer era is interesting. I had assumed it was a multi-epoch spanning structure, not something which was ephemeral inside human recorded observations.

Watching the TV broadcasts of the comet collisions "string of pearls" was amazing. Watching a slow fade on the spot might be something which requires a decades-long movie capture. (obviously, periodic stills being combined over 10-20 years)