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GEOPHYSICAL RESEARCH LETTERS, VOL. 33, L08108, doi:10.1029/2005GL025180, 2006

ALTAIR incoherent scatter observations of the equatorial daytime ionosphere

Erhan Kudeki

Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA


Marco Milla

Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA


Martin Friedrich

Graz University of Technology, Graz, Austria


Gerald Lehmacher

Department of Physics and Astronomy, Clemson University, Clemson, South Carolina, USA


Dale Sponseller

Kwajalein Range Services LLC, Kwajalein Atoll, Marshall Islands


Abstract

The first high-resolution electron density maps of the low-latitude D- and E-region ionosphere in the Pacific sector acquired with ALTAIR UHF measurements are presented. The electron density data were collected in connection with a rocket based common volume experiment described by Friedrich et al. (2006). The observed phenomena in the density maps include E-region density layers of tidal origin, shorter lived layers with small vertical scales, and lower E-region electron density enhancement in response to enhanced X-ray flux.

Received 9 November 2005; accepted 6 February 2006; published 28 April 2006.

Index Terms: 2415 Ionosphere: Equatorial ionosphere; 2437 Ionosphere: Ionospheric dynamics; 2439 Ionosphere: Ionospheric irregularities; 2467 Ionosphere: Plasma temperature and density; 2494 Ionosphere: Instruments and techniques.

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Citation: Kudeki, E., M. Milla, M. Friedrich, G. Lehmacher, and D. Sponseller (2006), ALTAIR incoherent scatter observations of the equatorial daytime ionosphere, Geophys. Res. Lett., 33, L08108, doi:10.1029/2005GL025180.