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| Titel |
Comparison of temporal fluctuations in the total electron content estimates from EISCAT and GPS along the same line of sight |
| VerfasserIn |
B. Forte, N. D. Smith, C. N. Mitchell, F. Dalt, T. Panicciari, A. T. Chartier, D. Stevanovic, M. Vuckovic, J. Kinrade, J. R. Tong, I. Häggström, E. Turunen |
| 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 ; 31, no. 4 ; Nr. 31, no. 4 (2013-04-23), S.745-753 |
| Datensatznummer |
250019029
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| Publikation (Nr.) |
 copernicus.org/angeo-31-745-2013.pdf |
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| Zusammenfassung |
| The impact of space weather events on satellite-based technologies (e.g.
satellite navigation and precise positioning) is typically quantified on the
basis of the total electron content (TEC) and temporal fluctuations
associated with it. GNSS (global navigation satellite systems) TEC
measurements are integrated over a long distance and thus may include
contributions from different regions of the ionised atmosphere which may
prevent the resolution of the mechanisms ultimately responsible for given
observations. The purpose of the experiment presented here was to compare
TEC estimates from EISCAT and GPS measurements. The EISCAT measurements were
obtained along the same line of sight of a given GPS satellite observed from
Tromsø. The present analyses focussed on the comparison of temporal
fluctuations in the TEC between aligned GPS and EISCAT measurements. A
reasonably good agreement was found between temporal fluctuations in TEC
observed by EISCAT and those observed by a co-located GPS ionospheric
monitor along the same line of sight, indicating a contribution from
structures at E and F altitudes mainly to the total TEC in the presence of
ionisation enhancements possibly caused by particle precipitation in the
nighttime sector. The experiment suggests the great potential in the
measurements to be performed by the future EISCAT_3D system,
limited only in the localised geographic region to be covered. |
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