Computer Science – Sound
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47.1081s&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 47, Nov. 1985, p. 1081-1084. Research supported by the Dep
Computer Science
Sound
3
Equatorial Atmosphere, Ionospheric Ion Density, Molecular Ions, Positive Ions, Atmospheric Models, Night Sky, Nitric Oxide, Oxygen, Rocket Sounding, Vertical Distribution
Scientific paper
A graphical comparison of four ion composition measurements, obtained in the early morning at the Thumba equatorial station during 1978-1982, with an IRI model (1981) is presented. Underestimation, with the IRI model, of the NO(+)/O2(+) ratios by a factor of at least 1.6 except in the midlatitudes is observed; ion dynamics are studied to explain this occurrence. The electron density is decreased and the molecular ion concentration increased proportionately at night. NO(+) ions drift downward due to Pedersen currents prevalent as a part of the electrojet current system, thereby, increasing the ion concentration downward.
Pokhun'kov A. A.
Raghavarao R.
Sridharan Ramaswamy
Varfolomeev V. A.
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