Incoherent scatter radar studies of mesospheric temperatures and collision frequencies at Arecibo

Details Incoherent scatter radar studies of mesospheric temperatures and collision frequencies at Arecibo Incoherent scatter radar studies of mesospheric temperatures and collision frequencies at Arecibo

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....8611330t&link_type=abstract

Journal of Geophysical Research, vol. 86, Dec. 1, 1981, p. 11330-11334.

Physics

12

Atmospheric Temperature, Collision Rates, Incoherent Scatter Radar, Ionic Collisions, Mesosphere, Altitude, Atmospheric Models, Data Acquisition, Data Processing, Electron Density (Concentration), Ion Scattering, Line Spectra, Temperature Gradients, Temporal Distribution

Scientific paper

The Arecibo 430 MHz incoherent scatter radar is used in measuring the ion-neutral collision frequency and temperature of the atmosphere in the 70 to 100 km altitude range. The parameters are determined over altitude segments that are comparable to the scale height of the mesosphere. The spectra scattered from the mesosphere are collision dominated; that is, for the Arecibo radar frequency, the normalized ion-neutral collision frequency is greater than one at all altitudes observed. Analysis of the widths of these spectra demonstrate that both the temperature and collision frequency values agree quite favorably with the Cira model atmosphere for the summer months. It is pointed out that measurements of the type presented here are useful for chemical and dynamical modeling of the lower ionosphere.

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