Estimation of electron densities in the lower thermosphere from GUVI 135.6nm tomographic inversions in support of SpreadFEx

F. Kamalabadi, J. M. Comberiate, M. J. Taylor, P. D. Pautet

Research output: Contribution to journalArticlepeer-review

Abstract

The SpreadFEx campaign was conducted with the goal of investigating potential neutral atmospheric dynamics influences in seeding plasma instabilities and bubbles extending to higher altitudes from September to November 2005, with primary measurements in Brazil. In this paper, we present the results of space-based UV and ground-based optical observations in support of this campaign. Specifically, we present multi-dimensional electron density images obtained tomographically from the 135.6 nm emissions measured by the GUVI instrument aboard the TIMED satellite that result from radiative recombination of O+ and compare those with the corresponding 630.0 nm OI images recorded in the Brazilian sector. The GUVI results provide altitude vs. longitude information on depleted regions in the ionospheric plasma density that are complementary to the single-height latitude-longitude images obtained with the airglow imager.

Original languageEnglish (US)
Pages (from-to)2439-2448
Number of pages10
JournalAnnales Geophysicae
Volume27
Issue number6
DOIs
StatePublished - 2009

Keywords

  • Ionosphere (Equatorial ionosphere)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Geology
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

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