Plasmaspheric electron density reconstruction based on the topside sounder model profiler |
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Authors: | Ivan Kutiev Pencho Marinov Anna Belehaki Norbert Jakowski Bodo Reinisch Chris Mayer Ioanna Tsagouri |
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Institution: | 1.Geophysical Institute,Bulgarian Academy of Sciences,Sofia,Bulgaria;2.Institute for Parallel Processing,Bulgarian Academy of Sciences,Sofia,Bulgaria;3.National Observatory of Athens,Institute for Space Applications and Remote Sensing,Athens,Greece;4.German Aerospace Center,Institute of Communication and Navigation,Wessling,Germany;5.Center for Atmospheric Research,University of Massachusetts Lowell,Lowell,USA |
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Abstract: | We apply a model-assisted technique to construct the topside electron density profile based on Digisonde measurements. This
technique uses the Topside Sounder Model (TSM), which provides the plasma scale height, O+-H+ transition height, and their ratio Rt = H
T
/h
T
, derived from topside sounder data of Alouette and ISIS satellites. The Topside Sounder Model Profiler (TSMP) incorporates
TSM and uses the model quantities as anchor points for the construction of topside density profiles. TSMP provides its model
ratios with transition height and plasmaspheric scale height. The analysis carried out indicates that Digisonde derived F-region
topside scale height Hm is systematically lower than one derived from topside sounder profiles. To construct topside profiles by using Hm, a correction factor of around 3 is needed to multiply the neutral scale height in the α-Chapman formula. It was found that
the plasmaspheric scale height strongly depends on latitude and its ratio with the F-region scale height expresses large day-to-day
variability. |
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Keywords: | |
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