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| Titel |
Imaging of structures in the high-latitude ionosphere: model comparisons |
| VerfasserIn |
D. W. Idenden, R. J. Moffett, M. J. Williams, P. S. J. Spencer, L. Kersley |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 16, no. 8 ; Nr. 16, no. 8, S.969-973 |
| Datensatznummer |
250013393
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| Publikation (Nr.) |
 copernicus.org/angeo-16-969-1998.pdf |
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| Zusammenfassung |
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).
Key words. Ionosphere (modelling and
forecasting; polar ionosphere) · Radio Science (instruments and techniques) |
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