Computer Science – Sound
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jatp...53..115b&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 53, Jan.-Feb. 1991, p. 115-134. SERC-supported research.
Computer Science
Sound
14
D Region, E Region, Eiscat Radar System (Europe), Ionospheric Composition, Ionospheric Electron Density, Energetic Particles, Ionospheric Sounding, Particle Precipitation, Radar Measurement, Thermosphere
Scientific paper
The quiet D- and E-regions are presently modeled by the Mitra-Rowe (1972) simplified six-ion model and the Sodankyla Geophysical Observatory's 35-ion model, using EISCAT UHF and VHF summer data as constraints. After adjusting the solar flux to obtain a fit at E-region altitudes, followed by adjustment of the nitric oxide profile, the effects of a change in solar zenith angle is compared with observations while the same model inputs are maintained. Good agreement is obtained between final models and observations in the 80-110 km range. The derived nitric oxide profiles have elevated peak concentrations, perhaps due to an enhancement of thermospheric nitric oxide by morning-sector energetic particle precipitation.
Burns C. J.
Hargreaves John Keith
Matveinen H.
Ranta Hilkka
Turunen Esa
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