All Title Author
Keywords Abstract

Publish in OALib Journal
ISSN: 2333-9721
APC: Only $99


Relative Articles

A local ionospheric model for forecasting the critical frequency of the F2 layer during disturbed geomagnetic and ionospheric conditions

Variations of the ionospheric F2 layer critical frequency at Zhongshan Station, Antarctica

Statistical study of the equatorial F2 layer critical frequency at Ouagadougou during solar cycles 20, 21 and 22, using Legrand and Simon’s classification of geomagnetic activity

Prediction method of the ionospheric F2 layer critical frequency based on neural networks

A short-term ionospheric forecasting empirical regional model (IFERM) to predict the critical frequency of the F2 layer during moderate, disturbed, and very disturbed geomagnetic conditions over the European area

The Planetary Wave Activity in Temperatures of the Stratosphere, Mesosphere and in Critical Frequencies of Ionospheric F2 Layer

The Planetary Wave Activity in Temperatures of the Stratosphere, Mesosphere and in Critical Frequencies of Ionospheric F2 Layer

Variability of the Critical Frequency of the F2 Layer, foF2 in West Africa using Ionosonde Stations at Ouagadougou and Dakar

A Software Package Generating Long Term and Near Real Time Predictions of the Critical Frequencies of the F2 Layer over Europe and Its Applications

Software for the automatic scaling of critical frequency f0F2 and MUF(3000) F2 from ionograms appliedat the Ionospheric Observatory of Gibilmanna


Electron Bulk Surface Density Effect on Critical Frequency in the F2-Layer

DOI: 10.4236/ijg.2018.99033, PP. 572-578

Keywords: Ionosphere, Total Electron Contents, Critical Frequency in F2-Layer, Solar Cycle Phase, International Reference Ionosphere Model

Full-Text   Cite this paper   Add to My Lib


Ionosphere layer is the atmosphere region which reflects radio waves for telecommunication. The density in particles in this layer influences the quality of communication. This study deals with the effects of Total Electron Contents (TEC) on the critical frequency of radio waves in the F2-layer. Total Electron Contents parameter symbolizes electron bulk surface density in ionosphere layer. Above critical frequency value in F2 layer (foF2), radio waves pass through ionosphere. The knowledge of this value enables to calibrate transmission frequencies. In this study, we consider TEC effects on foF2 under quiet time conditions during the maximum and the minimum of solar cycle 22, at Ouagadougou station, in West Africa. The study also considers the effects of seasons and the hourly variability of TEC and foF2. This work shows winter anomaly on foF2 and TEC on minimum and maximum of solar cycle phase respectively. Running International Reference Ionosphere (IRI) model enables to carry out the effects of TEC on foF2 by use of their monthly average values. This leads to a new approach to calibrate radio transmitters.


[1]  Bittencourt, J.A. and Chryssafidis, M. (1994) On the IRI Model Predictions for the Low-Latitude Ionosphere. Journal of Atmospheric and Solar-Terrestrial Physics, 56, 995-1009.
[2]  Bhuyan, P.K. and Borah, R.R. (2007) TEC Derived from GPS Network in India and Comparison with the IRI. Advances in Space Research, 39, 830-840.
[3]  Ouattara, F. and Rolland, F. (2011) Variability of CODG TEC and IRI 2001 Total Electron Content (TEC) during IHY Campaign Period (21 March to 16 April 2008) at Niamey under Different Geomagnetic Activity Conditions. Scientific Research and Essays, 6, 3609-3622.
[4]  Sethi, N.K., Dabas, R.S. and Das, R.M. (2007) Diurnal and Seasonal Variations of B0, B1 Parameters during High Solar Activity Period at Low Mid-Latitude and Their Comparison with IRI-2001 Model. Journal of Atmospheric and Solar-Terrestrial Physics, 69, 767-774.
[5]  Sethi, N.K., Dabas, R.S. and Vohra, V.K. (2004) Diurnal and Seasonal Variations of HmF2 Deduced from Digital Ionosonde over New Delhi and Its Comparison with IRI 2001. Annals of Geophysics, 22, 453-458.
[6]  Richmond, A.D., Matsushita, S. and Tarpley, J.D. (1976) On the Production Mechanism of Electric Currents and Fields in the Ionosphere. Journal of Geophysical Research, 81, 547-555.
[7]  Jin, S. and Park, J.U. (2007) Ionospheric Tomography: A Comparison with the IRI-2001 Model over South Korea. Earth Planet Space, 59, 287-292.
[8]  Pedatella, N.M., Forbes, J.M., Maute, A., Richmond, A.D., Fang, T.-W., Larson, K.M. and Millward, G. (2011) Longitudinal Variations in the F Region Ionosphere and the Topside Ionosphere-Plasmasphere: Observations and Model Simulations. Journal of Geophysical Research, 116, A12309.
[9]  Qian, L., Burns, A.G., Chamberlin, P.C. and Solomon, S.C. (2010) Flare Location on the Solar Disk: Modeling the Thermosphere and Ionosphere Response. Journal of Geophysical Research, 115, A09311.
[10]  Roble, R.G., Ridley, E.C., Richmond, A.D. and Dickinson, R.E. (1988) A Coupled Thermosphere/Ionosphere General Circulation Model. Geophysics Research Letter, 15, 1325.
[11]  Weimer, D.R. (2005) Improved Ionospheric Electrodynamic Models and Application to Calculating Joule Heating Rates. Journal of Geophysical Research, 110, A05306.
[12]  Wang, W., Wiltberger, M., Burns, A.G., Solomon, S.C., Killeen, T.L., Maruyama, N. and Lyon, J.G. (2004) Initial Results from the Coupled Magnetosphere-Ionosphere-Thermosphere Model: Thermosphere-Ionosphere Responses. Journal of Atmospheric and Solar-Terrestrial Physics, 66/15-16, 1425.
[13]  Richmond, A.D., Ridley, E.C. and Roble, R.G. (1992) A Thermosphere/Ionosphere General Circulation Model with Coupled Electrodynamics. Geophysics Research Letter, 19, 601.
[14]  Ouattara, F. and Nanéma, E. (2014) Quiet Time foF2 Variation at Ouagadougou Station and Comparison with TIEGCM and IRI-2012 Predictions for 1985 and 1990. Physical Science International Journal, 4, 892-902.
[15]  Ouattara, F. and Nanéma, E. (2011) hmF2 Quiet Time Variations at Ouagadougou and Comparison with IRI-2012 and TIEGCM Predictions during Solar Minimum and Maximum. Archives of Applied Science Research, 5, 55-61.
[16]  Vassal, J. (1982) La variation du champ magnétique et ses relations avec l’électrojetéquatorial au Sénégal oriental. Annales de Géophysique, 38, 347-355.
[17]  Nour, A.M., Frédéric, O., Louis, Z.J., Frédéric, G.A.M., Emmanuel, N. and François, Z. (2015) Statistical Study of foF2 Diurnal Variation at Dakar Station from 1971 to 1996: Effect of Geomagnetic Classes of Activity on Seasonal Variation at Solar Minimum and Maximum. International Journal of Geosciences, 6, 201-208.
[18]  Nanema, E., Gnabahou, D.A., Zoundi, C. and Ouattara, F. (2018) Modeling the Ionosphere during Quiet Time Variation at Ouagadougou in West Africa. International Journal of Astronomy and Astrophysics, 8, 163-170.


comments powered by Disqus