Imaging of structures in the high-latitude ionosphere: model comparisons

Details Imaging of structures in the high-latitude ionosphere: model comparisons Imaging of structures in the high-latitude ionosphere: model comparisons

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998angeo..16..969i&link_type=abstract

Annales Geophysicae, vol. 16, Issue 8, pp.969-973

Physics

3

Scientific paper

The tomographic reconstruction technique generates a two-dimensional latitude versus height electron density distribution from sets of slant total electron content measurements (TEC) along ray paths between beacon satellites and ground-based radio receivers. In this note, the technique is applied to TEC values obtained from data simulated by the Sheffield/UCL/SEL Coupled Thermosphere/Ionosphere/Model (CTIM). A comparison of the resulting reconstructed image with the `input' modelled data allows for verification of the reconstruction technique. All the features of the high-latitude ionosphere in the model data are reproduced well in the tomographic image. Reconstructed vertical TEC values follow closely the modelled values, with the F-layer maximum density (NmF2) agreeing generally within about 10%. The method has also been able successfully to reproduce underlying auroral-E ionisation over a restricted latitudinal range in part of the image. The height of the F2 peak is generally in agreement to within about the vertical image resolution (25 km).

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