A team of researchers affiliated with Aix-Marseille Université has found evidence that suggests the thickness of Jupiter’s red spot has remained relatively stable as its surface area has decreased. In their paper published in the journal Nature Physics, the group describes how they estimated the thickness of the spot and why they believe it is not going to disappear anytime soon.
Source:
https://phys.org/news/2020-03-jupiter-red-thickness-steady-surface.html