High Latitude Sporadic E.
Environmental research papers,
AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
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Previous research results on high latitude sporadic E are surveyed, and replotted and displayed in Corrected Geomagnetic Latitude CGL AND Corrected Geomagnetic Time CGT and related to current research results. Patterns of occurrence of sporadic E are developed, showing percent of time of occurrence in location in the CGLCGT coordinate system, in terms of sporadic E top frequency fE sub s and magnetic activity level. Patterns of E sub s occurrence are related to concepts of the auroral oval, polar cap, and substorms. Sporadic E with top frequency or MHz is related to substorms. This sporadic E occurs in the late evening-early night sector of the CGLCGT coordinate system. Implications of sporadic E on high latitude HF propagation during solar cycle maximum and minimum are discussed. Author
- Atmospheric Physics