Morning overshootof T e enhanced by downward plasma drift in the equatorial topside ionosphere

Oyama Koichiro, N. Balan, S. Watanabe, T. Takahashi, F. Isoda, G. J. Bailey, H. Ova

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The morning overshoot in electron temperature, Te, which occurs in the sunlit atmosphere of low electron density during early morning hours, is a well known phenomenon. Studies of the phenomenon carried out using the Hinotori satellite observations reveal that the overshoot enhances in the topside equatorial F-region for a short period of time in the morning. The enhancement in the overshoot is found to depend on season and solar activity; it is strong during the northern summer months and grows with the increase in solar activity. Theoretical model calculations show that the enhancement in Te is caused by a reduction in electron density in the topside ionosphere due to a downward drift of plasma.

Original languageEnglish
Pages (from-to)959-966
Number of pages8
JournalJournal of geomagnetism and geoelectricity
Volume48
Issue number7
DOIs
Publication statusPublished - 1996 Jan 1

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plasma drift
morning
solar activity
electron density
ionospheres
ionosphere
plasma
F region
augmentation
satellite observation
electron
summer
atmosphere
electron energy
atmospheres
temperature
calculation
observation satellite

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Koichiro, Oyama ; Balan, N. ; Watanabe, S. ; Takahashi, T. ; Isoda, F. ; Bailey, G. J. ; Ova, H. / Morning overshootof T e enhanced by downward plasma drift in the equatorial topside ionosphere In: Journal of geomagnetism and geoelectricity. 1996 ; Vol. 48, No. 7. pp. 959-966.
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Morning overshootof T e enhanced by downward plasma drift in the equatorial topside ionosphere . / Koichiro, Oyama; Balan, N.; Watanabe, S.; Takahashi, T.; Isoda, F.; Bailey, G. J.; Ova, H.

In: Journal of geomagnetism and geoelectricity, Vol. 48, No. 7, 01.01.1996, p. 959-966.

Research output: Contribution to journalArticle

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AU - Koichiro, Oyama

AU - Balan, N.

AU - Watanabe, S.

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AU - Bailey, G. J.

AU - Ova, H.

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