Observations of the high-latitude ionosphere with the Poker Flat MST radar - Analyses using simultaneous Chatanika radar measurements

Details Observations of the high-latitude ionosphere with the Poker Flat MST radar - Analyses using simultaneous Chatanika radar measurements Observations of the high-latitude ionosphere with the Poker Flat MST radar - Analyses using simultaneous Chatanika radar measurements

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....8810239l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Dec. 1, 1983, p. 10239-10245.

Statistics

Applications

4

Auroral Zones, Ionospheric Electron Density, Plasma Density, Radar Measurement, Space Plasmas, Backscattering, D Region, Electron Precipitation, Incoherent Scatter Radar, Signal To Noise Ratios, Very High Frequencies

Scientific paper

The NOAA MST (mesosphere-stratosphere-troposphere) VHF radar at Poker Flat, AK, provides nearly continuous high time resolution measurements of the velocity of 3-m scale plasma density irregularities at altitudes approximately 85 km during the summer and less continuous but lower (approximately 65 km) altitude observations during the winter. However, incomplete knowledge of the origin and behavior of the VHF scatterers limits the applications of these data. Observations from the nearby Chatanika incoherent scatter radar are used to investigate the effects of electron precipitation and magnetospheric convection electric fields on the VHF observations. It is shown that the backscattered VHF signal is usually enhanced when auroral particles increase the D region ionization. The magnetospheric convection electric fields do not generally affect the interpretation of the measured velocities of the 3-m plasma irregularities as mesospheric winds. Combined neutral wind measurements from the two radars show some evidence for a continuous tide from the mesosphere through the thermosphere.

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