Variability of foF2 for an equatorial station and comparison with the foF2 maps in IRI model |
| |
| Affiliation: | 1. Physics Department, University of Ilorin, P.M.B. 1515, Ilorin, Nigeria;2. The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy;1. Institute of Space Science and Technology, University of Karachi, Main University Rd, Karachi 75270, Pakistan;2. Pakistan Space and Upper Atmosphere Research Commission (SUPARCO), SUPARCO Rd, P.O. Box No. 8402, Karachi 75270, Pakistan;3. China Research Institute of Radiowave Propagation (CRIRP), P.O. Box 6301, Qingdao 266107, China;4. NED University of Engineering, Main University Rd, Karachi 75270, Pakistan |
| |
| Abstract: | In this study, foF2 data obtained from an equatorial station in West Africa were subjected to an occurrence probability distribution test. This was done on an hourly basis, for all the 24 h of the day. The results show that the probability (Np) of predicting foF2 within the range±of a standard deviation (σ) centered on the mean (μ) is ⩾0.68 is at least about 70% of the hourly set of data considered in this study irrespective of time of the day, season or solar cycle period. The distribution is not, however, perfectly symmetrically distributed around the mean. The seasonal hourly averages of foF2 were compared with those of IRI predictions. The IRI representation was found to be very good at low and moderate solar activity for both day and nighttime when the ITU-R coefficients are used. This is also true of the daytime at high solar activity. The night time prediction is only fairly good when the URSI coefficients are used for the prediction. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
