What is the Drift Rate of Jupiter's Great Red Spot?

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SUMMARY

The drift rate of Jupiter's Great Red Spot (GRS) refers to the westward movement of this massive storm within the planet's atmosphere. Recent discussions confirm that the GRS is not only shrinking in size but also increasing in height, with a drift rate quantified at approximately 2 degrees per month. This movement is distinct from the rotational speed of the atmospheric belts and zones surrounding the GRS. For further insights, refer to NASA's article on the GRS and its changing characteristics.

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Can someone explain to me what "drift" is when talking about the rate at which the grs drifts around Jupiter?

I have read several articles that talk about how the "drift rate" is changing. Is this the speed the spot is moving in the belt or zone it lays in? That is a different speed than the belt or the zone, right?

Thanks.
 
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This article may answer your question on drift as well as other questions on the Great Red Spot.

https://www.nasa.gov/feature/goddard/2018/jupiters-great-red-spot-getting-taller-as-it-shrinks

http://www.astronomy.com/news/2018/...-is-shrinking-in-length-but-growing-in-height

Apparently, its been getting smaller, taller and drifting westward.

and a calculator for the drift at 2 degrees per month:

https://www.skyandtelescope.com/observing/interactive-sky-watching-tools/transit-times-of-jupiters-great-red-spot/
 
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