Statistics – Computation
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987p%26ss...35.1157r&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 35, Sept. 1987, p. 1157-1165. SERC-supported research.
Statistics
Computation
48
Atmospheric Models, Magnetic Storms, Molecular Diffusion, Thermosphere, Vertical Air Currents, Temporal Distribution, Time Dependence
Scientific paper
The departure from diffusive equilibrium of the distributions of atomic oxygen and molecular nitrogen due to vertical motions is studied for a two-component thermosphere. A three-dimensional time-dependent computational model is used to compute the diffusive equilibrium parameter P (defined in terms of O and N2 partial pressures) and its variations with height, latitude, and local time both for quiet-day conditions and for a simulated geomagnetic storm. Regions of enhanced P are associated with heating and strong upswelling, while regions of depressed P are associated with downswelling. The relative vertical flow of O and N2 is found to be proportional to the height gradient of P.
Fuller-Rowell Tim J.
Rees David
Rishbeth Henry
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