Comparing ionospheric models with mid-latitude ionosonde observations

Details Comparing ionospheric models with mid-latitude ionosonde observations Comparing ionospheric models with mid-latitude ionosonde observations

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009adspr..43.1624a&link_type=abstract

Advances in Space Research, Volume 43, Issue 11, p. 1624-1632.

Computer Science

Sound

Scientific paper

The purpose of this research work is to validate the ionospheric models (IRI and CHIU) to assess its suitability and usefulness as an operational tool. The ionospheric model is a computer model designed to predict the state of the global ionosphere for 24 h. The scope was limited to conduct comparisons between the predicted F2 layer critical frequencies (f0F2) against observed ionosonde data. The ionospheric prediction model (IPM) was designed to predict by using monthly median sunspot number, while the observation data are taken from two digital ionospheric sounding stations (Okinawa, 26.28N, 127.8E and Wakkanai, 45.38N, 141.66E) which lies within the mid-latitude region of the globe. Analysis of the f0F2 data from stations for year (2001) with high solar activity and year (2004) with low solar activity, four months (March, June, September and December) chosen based primarily on data availability. From results it seen that the ratio between monthly median predicted and observed f0F2 values for each model used in this research work and for the chosen months was nonlinear with local time, so the empirical formula for applying correction factors were determined, these formula can be used to correct the error occurred in predicted f0F2 value.

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