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Semi-annual oscillations in Saturn’s low-latitude stratospheric temperatures

Author

Listed:
  • Glenn S. Orton

    (MS 169-237,)

  • Padma A. Yanamandra-Fisher

    (MS 169-237,)

  • Brendan M. Fisher

    (MS 183-601, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA)

  • A. James Friedson

    (MS 169-237,)

  • Paul D. Parrish

    (School of Geosciences, University of Edinburgh, Crew Building, The King's Buildings, West Mains Road, Edinburgh EH9 3JN, UK)

  • Jesse F. Nelson

    (University of Maine, 5709 Bennett Hall, Orono, Maine 04469, USA)

  • Amber Swenson Bauermeister

    (601 Campbell Hall, University of California, Berkeley, California 94720-3411, USA)

  • Leigh Fletcher

    (MS 169-237,)

  • Daniel Y. Gezari

    (Code 667, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA)

  • Frank Varosi

    (University of Florida, 211 Bryant Space Science Center, PO Box 112055, Gainesville, Florida 32611-2055, USA)

  • Alan T. Tokunaga

    (Institute for Astronomy, University of Hawaii, 2880 Woodlawn Drive, Honolulu, Hawaii 96822, USA)

  • John Caldwell

    (York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada)

  • Kevin H. Baines

    (MS 183-601, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA)

  • Joseph L. Hora

    (Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA)

  • Michael E. Ressler

    (MS 79-5, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA)

  • Takuya Fujiyoshi

    (Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, Hawaii 96720, USA)

  • Tetsuharu Fuse

    (Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, Hawaii 96720, USA)

  • Hagop Hagopian

    (4732 Boelter Hall, University of California, Los Angeles, California 90095, USA)

  • Terry Z. Martin

    (MS 169-237,)

  • Jay T. Bergstralh

    (Langley Research Center, Hampton, Virginia 23681-2199, USA)

  • Carly Howett

    (Atmospheric, Oceanic and Planetary Physics, Clarendon Laboratory, Oxford University, Parks Road, Oxford, Oxfordshire OX1 3PU, UK)

  • William F. Hoffmann

    (Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, Arizona 85721, USA)

  • Lynne K. Deutsch
  • Jeffrey E. Van Cleve

    (Ball Aerospace & Technologies Corp., Civil Space Systems, PO Box 1062, Boulder, Colorado 80306, USA)

  • Eldar Noe

    (MS 183-501, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA)

  • Joseph D. Adams

    (206 Space Sciences Building, Ithaca, New York 14583, USA)

  • Marc Kassis

    (W. M. Keck Observatory, 62-1120 Mamalahoa Highway, Kamuela, Hawaii 96743, USA)

  • Eric Tollestrup

    (NASA Infrared Telescope Facility, Institute for Astronomy, 640 North A’ohoku Place, Hilo, Hawaii 96822, USA)

Abstract

Seasonality on Saturn Both Earth and Jupiter have equatorial oscillations in their atmospheres, with two-year and four-year periodicity respectively. Two groups working independently now report a related phenomenon on Saturn. Orton et al. analysed wo decades of ground-based observations of Saturn's stratospheric emissions to reveal an oscillation with a period of 14.8±1.2 terrestrial years. This is roughly half of Saturn's year, suggesting seasonal forcing, as is the case with the Earth's semiannual oscillation. Fouchet et al. used infrared spectrometry data from the Cassini probe to detect a similar equatorial oscillation.

Suggested Citation

  • Glenn S. Orton & Padma A. Yanamandra-Fisher & Brendan M. Fisher & A. James Friedson & Paul D. Parrish & Jesse F. Nelson & Amber Swenson Bauermeister & Leigh Fletcher & Daniel Y. Gezari & Frank Varosi , 2008. "Semi-annual oscillations in Saturn’s low-latitude stratospheric temperatures," Nature, Nature, vol. 453(7192), pages 196-199, May.
    • Handle: RePEc:nat:nature:v:453:y:2008:i:7192:d:10.1038_nature06897
    DOI: 10.1038/nature06897
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