Positive and negative ion densities and mobilities in the middle atmosphere over India - Rocket measurements

Details Positive and negative ion densities and mobilities in the middle atmosphere over India - Rocket measurements Positive and negative ion densities and mobilities in the middle atmosphere over India - Rocket measurements

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jatp...54..347s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 54, Mar.-Apr. 1992, p. 347-354.

Computer Science

Sound

D Region, Ionic Mobility, Ionospheric Ion Density, Middle Atmosphere, Rocket Sounding, Atmospheric Conductivity, Atmospheric Models, Vertical Distribution

Scientific paper

This paper discusses the results from four rocket experiments conducted from Thumba, India, during the Indian Middle Atmosphere program. In the first two flights only positive ion measurements were attempted while the other two measured both positive and negative ion values. The results show that the positive ion density profiles go through a minimum around 62 km, as expected from the ion production models for this region. The ion density distribution is a function of solar zenith angle. An asymmetry with respect to noon is seen in these measurements, which is not expected theoretically. The positive ion mobilities indicate the ions to be water clusters, of the type H(+) (H2O)n with n = 2 or 3, similar to the earlier reported ones. The negative ion density profile exhibits a maximum around 85 km, which is not predicted by the currently available ion density models and theories of D-region ionization processes.

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