A two-dimensional, high-resolution, nested-grid model of the thermosphere. II - Response of the thermosphere to narrow and broad electrodynamic features

Details A two-dimensional, high-resolution, nested-grid model of the thermosphere. II - Response of the thermosphere to narrow and broad electrodynamic features A two-dimensional, high-resolution, nested-grid model of the thermosphere. II - Response of the thermosphere to narrow and broad electrodynamic features

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.6567f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, July 1, 1985, p. 6567-6586.

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49

Atmospheric Circulation, Atmospheric Models, Electrodynamics, Thermosphere, Atmospheric Composition, Atmospheric Temperature, Auroral Zones, Computational Grids, Dynamic Response, E Region, Ionospheric Ion Density, Meridional Flow, Neutral Atmospheres

Scientific paper

Over the past few years, a number of theoretical models have been developed in an attempt to model the response of the neutral thermosphere to electrodynamic forcing. Fuller-Rowell (1984) modeled the response of the neutral thermosphere to an electric field 'spike', with no associated enhancement of E region ion density. The obtained results indicated the importance of advection of momentum and energy in broadening the response to small-scale features and restricting the buildup of the neutral wind. In the present paper, the nested-grid model has been used to simulate the response of the neutral thermosphere in a case in which more realistic ion densities in the E region have been included. A number of different latitude scale sizes, from 1 deg to 5 deg latitude full width at half maximum, have also been considered, taking into account two levels of electric field (100 mV/m and 50 mV/m).

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