Physics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9614153b&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Aug. 1, 1991, p. 14,153-14,167.
Physics
69
Atmospheric Composition, Atmospheric General Circulation Models, Ionospheric Disturbances, Magnetic Storms, Thermosphere, Digital Simulation, Midlatitude Atmosphere, Neutral Gases
Scientific paper
A numerical simulation was performed using the NCAR thermospheric GCM (NCAR-TGCM) and was used to investigate the physical processes responsible for the thermospheric neutral compositional perturbations that were caused by forcings associated with an impulsive geomagnetic storm. The resulting compositional forcing terms and the compositional response were analyzed using the diagnostics processor described by Killeen and Roble (1984, 1986) and Burns et al. (1989). The results of the study are used to explain the respective roles of dynamics and diffusion in establishing the compositional morphology observed during the storm, which is, in turn, partly responsible for the negative phase of ionospheric storms.
Burns Alan G.
Killeen Tim L.
Roble Raymond G.
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