Predicted and measured bottomside F-region electron density and variability of the D1 parameter under quiet and disturbed conditions over Europe

Details Predicted and measured bottomside F-region electron density and variability of the D1 parameter under quiet and disturbed conditions over Europe Predicted and measured bottomside F-region electron density and variability of the D1 parameter under quiet and disturbed conditions over Europe

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004adspr..34.1973b&link_type=abstract

Advances in Space Research, Volume 34, Issue 9, p. 1973-1981.

Computer Science

2

Scientific paper

Modelling and forecasting of ionospheric parameters is very useful for different radio communication purposes. As long as variationsin the ionosphere form regular patterns, the empirical International Reference Ionosphere model, IRI 2000, provides sufficiently accurate corrections to the maximum electron density, NmF2, to predict the ionospheric effects on radio wave propagation. During geomagnetic storms, however, agreement between the IRI 2000 model and observations is still insufficient. This paper deals with the analysis of measured and model predicted F-region electron densities under quiet and disturbed conditions with the main emphasis placed on the distribution of the Fl-region daytime ionisation. Available electron density profiles obtained from ionograms for selected periods from several European ionospheric stations (Pruhonice, Ebro, Arenosillo) were compared with IRI 2000 model results. Comparative analysis shows that discrepancies do exist predominantly during the storm main phase. The model predicted daytime electron densities at the fixed F1-region heights are closer to observed values during summer than winter. Dependences of D1 on solar activity and season are also analysed.

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