Comparisons of observed ionospheric F2 peak parameters with IRI-2001 predictions over South Africa

Details Comparisons of observed ionospheric F2 peak parameters with IRI-2001 predictions over South Africa Comparisons of observed ionospheric F2 peak parameters with IRI-2001 predictions over South Africa

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jastp..71..273a&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 71, Issue 2, p. 273-284.

Physics

2

Ionosphere, International Reference Ionosphere (Iri), Hmf2 (Height Of The Maximum Electron Density Of The F2 Layer, Fof2 (Critical Frequency Of The F2 Layer)

Scientific paper

The monthly means of the ionospheric F2 peak parameters (foF2 and hmF2) over three stations in South Africa (Grahamstown, 33.3°S, 26.5°E, Madimbo, 22.4°S, 26.5°E, and Louisvale, 28.5°S, 21.2°E) were analyzed and compared with IRI-2001, using CCIR (Comité Consultatif International des Radio communications) and URSI (Union Radio-Scientifique Internationale coefficients) options. The analysis covers a few selected quiet and disturbed days during various seasons represented by the months of January, April, July and October 2003. IRI-2001 generally overestimates hmF2 for both quiet and disturbed days and it overestimates and underestimates foF2 at different times for all the stations. In general, foF2 is predicted more accurately by IRI-2001 than hmF2, and on average, the CCIR option performed better than the URSI option when predicting both foF2 and hmF2. In general, the model generates good results, although some improvements are still necessary to be implemented in order to obtain better predictions. There are no significant differences in the model predictions of hmF2 and foF2 for quiet and disturbed days.

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