Physics
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.217..495r&link_type=abstract
In ESA Achievements of the Intern. Magnetospheric Study (IMS) p 495-502 (SEE N85-24544 14-46)
Physics
Atmospheric Chemistry, Atmospheric Composition, Atmospheric Physics, Earth Magnetosphere, Upper Atmosphere, Atmospheric Heating, Atmospheric Ionization, Dynamic Models, International Magnetospheric Study, Nitrogen Oxides, Solar Protons
Scientific paper
Magnetospheric influence on the dynamics and chemical composition of the atmosphere are reviewed. The dynamics of the polar thermosphere is substantially modified, and at times dominated, by the momentum and energy supplied by the magnetosphere in the form of ion drag and Joule heating. The consequences for the upper thermosphere are now largely understood, but the effects on the lower thermosphere and mesosphere are unclear. Magnetosphere influence on atmospheric composition extends well down into the middle atmosphere, and perhaps even to the Antarctic ice cap. The auroral-zone source of odd nitrogen in the lower thermosphere was mapped. Its expansion to lower altitudes and latitudes was predicted by models and inferred by observations, while the odd-hydrogen enhancements caused in the mesosphere by solar-proton events were directly related to observed ozone depletions.
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