Anne's Spot Explained

Anne's Spot refers to a reddish-colored anticyclonic oval in Saturn's atmosphere, observed in 1980 and 1981 at 55°S by the Voyager space probes.[1] It was probably also observed in 2004 at about 53°S by the Cassini orbiter, one-third larger east-west and with faster winds.[2] [3]

Notes and References

  1. Book: Lewis . Patrick . Giant Planets of Our Solar System: An Introduction . 2006-01-27 . . 179.
  2. A.R. Vasavada. S.M. Hörst. M.R. Kennedy. A.P. Ingersoll. C.C. Porco. A.D. DelGenio. R.A. West. Cassini imaging of Saturn: Southern hemisphere winds and vortices . Journal of Geophysical Research: Planets . 111. E05004. 19 May 2006 . E5. 10.1029/2005JE002563 . If so, it has moved ~2° north in latitude and increased in velocity by ~25 m s−1, just as predicted by the zonal wind profile (in addition, its east-west diameter has increased from 3200 km to 4500 km).. 2006JGRE..111.5004V . free.
  3. Agustín Sánchez-Lavega . José F. Rojas . Pedro V. Sada . Saturn's Zonal Winds at Cloud Level . Icarus . October 2000 . 147 . 2 . 405–420 . 10.1006/icar.2000.6449 . 2000Icar..147..405S .

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