Extraction of polar mesosphere summer echoes from SuperDARN data

DOI HANDLE Web Site Web Site 被引用文献5件 オープンアクセス
  • K. Hosokawa
    Department of Information and Communication Engineering The University of Electro‐Communications Tokyo Japan
  • T. Ogawa
    Solar‐Terrestrial Environment Laboratory Nagoya University Toyokawa, Aichi Japan
  • N. F. Arnold
    Department of Physics and Astronomy University of Leicester Leicester U.K.
  • M. Lester
    Department of Physics and Astronomy University of Leicester Leicester U.K.
  • N. Sato
    National Institute of Polar Research Tokyo Japan
  • A. S. Yukimatu
    National Institute of Polar Research Tokyo Japan

書誌事項

公開日
2005-06
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2005gl022788
公開者
American Geophysical Union (AGU)

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説明

<jats:p>An algorithm for automated extraction of polar mesosphere summer echoes (PMSE) from near‐range measurements of the Super Dual Auroral Radar Network (SuperDARN) is applied to observations obtained by the Syowa East (69.01°S, 38.61°E) and Iceland East (63.77°N, −20.54°W) radars whose fields‐of‐view are magnetically conjugate. The rate of PMSE occurrence in the SuperDARN data is greatly enhanced in summer months, reaching a maximum of ≈90% in Iceland and 60% in Syowa near the summer solstice. The diurnal variation of PMSE occurrence reaches a maximum near the noon meridian, with a distinct minimum at 20LT. These features are consistent with those derived from previous VHF radar observations, suggesting that the SuperDARN data contain large numbers of PMSE events. The interhemispheric asymmetry of PMSE occurrence is also estimated, and it is shown that the PMSE activity is ≈1.5 times higher in the Northern Hemisphere (N.H.) than in the Southern Hemisphere (S.H.). Thus, interhemispheric asymmetry in PMSE occurrence appears to exist, but is much weaker than that predicted previously based on VHF radar observations.</jats:p>

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