Control of equatorial ionospheric morphology by atmospheric tides

  • T. J. Immel
    Space Sciences Laboratory University of California Berkeley California USA
  • E. Sagawa
    National Institute of Information and Communications Technology Tokyo Japan
  • S. L. England
    Space Sciences Laboratory University of California Berkeley California USA
  • S. B. Henderson
    Department of Electrical and Computer Engineering Utah State University Logan Utah USA
  • M. E. Hagan
    High Altitude Observatory National Center for Atmospheric Research Boulder Colorado USA
  • S. B. Mende
    Space Sciences Laboratory University of California Berkeley California USA
  • H. U. Frey
    Space Sciences Laboratory University of California Berkeley California USA
  • C. M. Swenson
    Department of Electrical and Computer Engineering Utah State University Logan Utah USA
  • L. J. Paxton
    Johns Hopkins University Applied Physics Laboratory Laurel Maryland USA

書誌事項

公開日
2006-08
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2006gl026161
公開者
American Geophysical Union (AGU)

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説明

<jats:p>A newly discovered 1000‐km scale longitudinal variation in ionospheric densities is an unexpected and heretofore unexplained phenomenon. Here we show that ionospheric densities vary with the strength of non‐migrating, diurnal atmospheric tides that are, in turn, driven mainly by weather in the tropics. A strong connection between tropospheric and ionospheric conditions is unexpected, as these upward propagating tides are damped far below the peak in ionospheric density. The observations can be explained by consideration of the dynamo interaction of the tides with the lower ionosphere (E‐layer) in daytime. The influence of persistent tropical rainstorms is therefore an important new consideration for space weather.</jats:p>

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