Reconstruction of topside density profile by using the topside sounder model profiler and digisonde data

Details Reconstruction of topside density profile by using the topside sounder model profiler and digisonde data Reconstruction of topside density profile by using the topside sounder model profiler and digisonde data

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009adspr..43.1683k&link_type=abstract

Advances in Space Research, Volume 43, Issue 11, p. 1683-1687.

Computer Science

Sound

7

Scientific paper

To improve the accuracy of the real time topside electron density profiles given by the Digisonde software a new model-assisted technique is used. This technique uses the Topside Sounder Model (TSM), which provides the plasma scale height (Hs), O+-H+ transition height (HT), and their ratio Rt = Hs/HT, 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 in construction of topside density (Ne) profiles. For any particular location, TSMP calculates topside Ne profiles by specifying the values of foF2 and hmF2. In the present version, TSMP takes the F2 peak characteristics - foF2, hmF2, and the scale height at hmF2 - from the Digisonde measurements. The paper shows results for the Digisonde stations Athens and Juliusruh. It is found that the topside scale height used in Digisonde reconstruction is less than that extracted from topside sounder profiles. Rough comparison of their bulk distributions showed that they differ by an average factor of 1.25 for locations of Athens and Juliusruh. When the Digisonde scale heights are adjusted by this factor, the reconstructed topside profiles are close to those provided by TSM. Compared with CHAMP reconstruction profiles in two cases, TSMP/Digisonde profiles show lower density between 400 and 2000 km.

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