Investigation of the Winds and Electron Concentration Variability in the D Region of the Ionosphere by the Partial-Reflection Radar Technique
Weiland, Richard Mark
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https://hdl.handle.net/2142/69231
Description
Title
Investigation of the Winds and Electron Concentration Variability in the D Region of the Ionosphere by the Partial-Reflection Radar Technique
Author(s)
Weiland, Richard Mark
Issue Date
1982
Department of Study
Electrical Engineering
Discipline
Electrical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Atmospheric Science
Abstract
The development and first observations of the partial-reflection drifts experiment at Urbana, Illinois (40(DEGREES)N) are described. The winds data from the drifts experiment are compared with electron concentration data obtained by the differential-absorption technique to study the possible meteorological causes of the winter anomaly in the mesosphere at midlatitudes. Winds data obtained by the meteor-radar experiment at Urbana are also compared with electron concentration data measured at Urbana. A significant correlation is shown in both cases between southward winds and increasing electron concentration measured at the same location during winter.
The possibility of stratospheric/mesospheric coupling is investigated by comparing satellite-measured 0.4 mbar geopotential data with mesospheric electron concentration data. No significant coupling was observed.
The winds measured at Saskatoon, Saskatchewan (52(DEGREES)N) are compared with the electron concentrations measured at Urbana in an effort to establish a transport path from the auroral zone to Urbana. No constant fixed relationship is shown, but significant correlations are shown for short segments of the winter. A significant coherence is observed at discrete frequencies during segments of the winter.
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