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Article Dans Une Revue Annales Geophysicae Année : 1998

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

Résumé

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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Dates et versions

hal-00316429 , version 1 (18-06-2008)

Identifiants

  • HAL Id : hal-00316429 , version 1

Citer

D. W. Idenden, R. J. Moffett, M. J. Williams, P. S. J. Spencer, L. Kersley. Imaging of structures in the high-latitude ionosphere: model comparisons. Annales Geophysicae, 1998, 16 (8), pp.969-973. ⟨hal-00316429⟩
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