Saturn atmospheric dynamics one year after Cassini: Long-lived features and time variations in the drift of the Hexagon

@article{Hueso2020SaturnAD,
  title={Saturn atmospheric dynamics one year after Cassini: Long-lived features and time variations in the drift of the Hexagon},
  author={Ricardo Hueso and Agust'in S'anchez-Lavega and J. F. Rojas and Amy A. Simon and T L Barry and Teresa del R'io-Gaztelurrutia and Arrate Antu{\~n}ano and Kunio M. Sayanagi and Marc Delcroix and Leigh N. Fletcher and Enrique Garc'ia-Melendo and Santiago P'erez-Hoyos and John J. Blalock and Florent Colas and J. M. G'omez-Forrellad and Jacob L. Gunnarson and Damian A. Peach and M. H. Wong},
  journal={Icarus},
  year={2020},
  volume={336},
  pages={113429}
}
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References

SHOWING 1-10 OF 72 REFERENCES
The Global Atmospheric Circulation of Saturn
Over the past decade, the Cassini spacecraft has provided an unprecedented observational record of the atmosphere of Saturn, which in many ways now surpasses Jupiter as the best-observed giant
Deep winds beneath Saturn’s upper clouds from a seasonal long-lived planetary-scale storm
TLDR
Observations of a storm at northern latitudes in the peak of a weak westward jet during the beginning of northern springtime, in accord with the seasonal cycle but earlier than expected, and triggered a planetary-scale disturbance that circled Saturn but did not significantly alter the ambient zonal winds.
Saturn's Zonal Winds at Cloud Level
We present an analysis of new cloud motion measurements in Saturn's atmosphere from Voyager 1 and 2 images and define a nominal zonal wind velocity vs latitude profile for the cloud top level that
Equatorial winds on Saturn and the stratospheric oscillation
The zonal jets on the giant planets have been thought to be stable in time. A decline in the velocity of Saturn’s equatorial jet has been identified, on the basis of a comparison of cloud-tracking
MEANDERING SHALLOW ATMOSPHERIC JET AS A MODEL OF SATURN'S NORTH-POLAR HEXAGON
The Voyager flybys of Saturn in 1980–1981 revealed a circumpolar Hexagon at ~78° north planetographic latitude that has persisted for over 30 Earth years, more than one Saturn year, and has been
...
1
2
3
4
5
...