Physics
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.1545f&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A2, p. 1545-1558.
Physics
12
Atmospheric Models, Atmospheric Tides, Coupling, Thermosphere, Atmospheric Temperature, Diurnal Variations, Ionospheric Electron Density, Magnetic Disturbances
Scientific paper
The study reports simultaneous observations of the neutral winds and temperatures and electron densities in the upper and lower thermosphere. The measurements were made at Arecibo and Millstone Hill during the first Lower Thermosphere Coupling Study (LTCS 1) campaign in September 1987. The observations show much day-to-day variability, possibly due to the geomagnetic activity which occurred during the period; storm effects are discernible in the data at low altitudes even at low latitudes. Simulations of the low and midlatitudes did not substantially improve with the use of lower boundary conditions derived from the measurements. The model predicts that diurnal waves are not negligible in analysis of lower thermosphere data; near 100 km the diurnal wave amplitudes of the meridional waves were predicted to be greater than the semidiurnal.
Fesen C. G.
Hagan Maura E.
Roble Raymond G.
Tepley Craig A.
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