Physics
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jatp...41..481c&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 41, May 1979, p. 481-483, 485-495, 497-499. Research supported by the Austr
Physics
Cloud Physics, Doppler Radar, Midlatitude Atmosphere, Sporadic E Layer, Atmospheric Circulation, Contours, Doppler Effect, High Frequencies, Ionograms, Ionosondes, Radar Transmitters, Vertical Motion
Scientific paper
Observations of sporadic E using the HF Doppler technique are presented. An important result is the simultaneous observation of many moving clouds in the layer. The Doppler shifts expected from various types of moving irregularities are described, together with assumptions involved in an estimate of their horizontal velocity. The reflection mechanism from nonblanketing layers relevant to the horizontal structure observed is also discussed. It appears that on some occasions partial reflection can be attributed to dense clouds of ionization seen at off vertical angles. Accurate group range data together with direction of arrival of radio waves from the sporadic E-layer are required to confirm this tentative conclusion.
Cornelius D. W.
Essex Elizabeth A.
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