Observations of solar-flare ionization in the mesosphere using coherent-scatter radar |
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Authors: | JW Parker SA Bowhill |
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Institution: | Aeronomy Laboratory, Department of Electrical and Computer Engineering, University of Illinois, Urbana, IL 61801, USA |
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Abstract: | Observations of solar-flare ionization in the mesosphere can be made using coherent-scatter radar systems. The scattered power profiles they measure in the 60–90 km altitude region is a function of the ion concentration gradient and the intensity of turbulent mixing at each atltitude. By comparing the power profiles before, during and after a solar flare, it is possible to estimate the ion production rate during the flare as a function of altitude and time. This analysis is used to compare the ion production rates with generally accepted ion-chemical models. Comparisons are made with ion production rates estimated from the solar X-ray flux for the same flare made by geostationary satellites. |
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