Modelling of the mid-latitude ionosphere. I

Details Modelling of the mid-latitude ionosphere. I Modelling of the mid-latitude ionosphere. I

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984angeo...2..197t&link_type=abstract

Annales Geophysicae (ISSN 0755-0685), vol. 2, Mar.-Apr. 1984, p. 197-206.

Computer Science

Sound

Atmospheric Models, Ionospheric Electron Density, Ionospheric Ion Density, Mathematical Models, Midlatitude Atmosphere, Spectral Methods, Atmospheric Ionization, Electron Energy, Ion Temperature, Momentum Transfer

Scientific paper

A numerical 'spectral' method is proposed for modeling the midlatitude ionosphere. The method is a time-dependent and altitude-dependent polynomial expansion applied to an ionosphere having the same physical conditions, electron and ion temperatures, neutral wind, and electric field as those observed by the Saint-Santin coherent scatter sounder during selected days. The vertical velocities of the ions are determined by an equation for momentum transfer (option 1) or by soundings (option 2). Option 2 is found to produce a better fit with measurements which indicate that large changes in the neutral wind and in the electric field from one day to the next result in fluctuations in the ionization profiles on the order of 20 percent.

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