Computer Science
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986thdy.work...23b&link_type=abstract
In NASA. Goddard Space Flight Center Thermosphere Dynamics Workshop, Volume 2 p 23-28 (SEE N86-29301 20-42)
Computer Science
Atmospheric Circulation, F Region, Incoherent Scatter Radar, Night Sky, Thermosphere, Turbulent Diffusion, Atmospheric Models, Meridional Flow, Oxygen Ions, Pressure Gradients, Puerto Rico, Radar Tracking, Temperature Gradients, Viscous Drag
Scientific paper
Incoherent scatter radar observations of the nighttime F layer at Arecibo, Puerto Rico, are used to determine the O+ diffusion velocity at different altitudes. Further analysis allows evaluation of the neutral wind and the ion-drag force in the direction of the magnetic meridian. The local acceleration of the meridional neutral wind is also determined. The possibility of evaluating the viscous force using incoherent scatter radar data was also investigated. Preliminary results indicate that, at certain times and at altitudes above about 350 km, viscous drag may be a significant term in the neutral equation of motion. Combining these results allows height profiles of the meridional pressure gradient to be deduced. The pressure gradients thus derived is compared with that determined from measurements of the horizontal temperature gradient and that given by the MSIS model atmosphere.
Burnside Roger G.
Tepley Craig A.
Walker James C. G.
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