A model of the terrestrial ionosphere in the altitude interval 50-4000 km. II - Molecular ions (N2/+/, NO/+/, O2/+/) and electron density

Details A model of the terrestrial ionosphere in the altitude interval 50-4000 km. II - Molecular ions (N2/+/, NO/+/, O2/+/) and electron density A model of the terrestrial ionosphere in the altitude interval 50-4000 km. II - Molecular ions (N2/+/, NO/+/, O2/+/) and electron density

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989em%26p...47..109k&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 47, Nov. 1989, p. 109-163. Research supported by DFG.

Physics

2

Atmospheric Models, Earth Ionosphere, Ionospheric Electron Density, Ionospheric Ion Density, Molecular Ions, Annual Variations, Diurnal Variations, Nitric Oxide, Nitrogen Ions, Oxygen Ions, Satellite Observation

Scientific paper

Empirical models of molecular ion densities (N2/+/, NO/+/, O2/+/) and electron density (Ne) are presented in the altitude interval 50-4000 km as functions of time (diurnal, annual), space (position, altitude) and solar flux (F10.7). Using observations of 6 satellites (AE-C, AE-D, AE-E, Alouette-2, ISIS-1, ISIS-2), 4 incoherent scatter stations (Arecibo, Jicamarca, Millstone Hill, St Santin) and more than 700 D-region profiles, this model describes the global gross features of the ionosphere for quiet geophysical conditions. The molecular ion densities and the electron density increase with increasing altitude up to a maximum (or several maxima) and decrease from there with increasing height. Between 80 and 200 km, the main ionic constituents are NO(+) and O2(+); below 80 km cluster ions predominate. During local summer conditions the molecular ions and Ne increase around polar latitudes and decrease correspondingly during local winter.

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