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Comparison of ionospheric F2 peak parameters foF2 and hmF2 with IRI2001 at Hainan
Wang, X.; Shi, J. K.; Wang, G. J.; Gong, Y.; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationAdvances in Space Research
2009
Volume43Issue:11Pages:1812-1820
ISSN0273-1177
Language英语
KeywordLow-latitude Ionosphere F2 Peak Parameters Iri Model International Reference Ionosphere
AbstractMonthly median values of foF2, hmF2 and M(3000)F2 parameters, with quarter-hourly time interval resolution for the diurnal variation, obtained with DPS4 digisonde at Hainan (19.5 degrees N, 109.1 degrees E; Geomagnetic coordinates: 178.95 degrees E, 8.1 degrees N) are used to investigate the low-latitude ionospheric variations and comparisons with the International Reference Ionosphere (IRI) model predictions. The data used for the present study covers the period from February 2002 to April 2007, which is characterized by a wide range of solar activity, ranging from high solar activity (2002) to low solar activity (2007). The results show that (1) Generally, IRI predictions follow well the diurnal and seasonal variation patterns of the experimental values of foF2, especially in the summer of 2002. However, there are systematic deviation between experimental values and IRI predictions with either CCIR or URSI coefficients. Generally IRI model greatly underestimate the values of foF2 from about noon to sunrise of next day, especially in the afternoon, and slightly overestimate them from sunrise to about noon. It seems that there are bigger deviations between IRI Model predictions and the experimental observations for the moderate solar activity. (2) Generally the IRI-predicted hmF2 values using CCIR M(3000)F2 option shows a poor agreement with the experimental results, but there is a relatively good agreement in summer at low solar activity. The deviation between the IRI-predicted hmF2 using CCIR M(3000)F2 and observed hmF2 is bigger from noon to sunset and around sunrise especially at high solar activity. The occurrence time of hmF2 peak (about 1200 LT) of the IRI model predictions is earlier than that of observations (around 1500 LT). The agreement between the IRI hmF2 obtained with the measured M(3000)F2 and the observed hmF2 is very good except that IRI overestimates slightly hmF2 in the daytime in summer at high solar activity and underestimates it in the nighttime with lower values near sunrise at low solar activity.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1145
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Wang, X.,Shi, J. K.,Wang, G. J.,et al. Comparison of ionospheric F2 peak parameters foF2 and hmF2 with IRI2001 at Hainan[J]. Advances in Space Research,2009,43(11):1812-1820.
APA Wang, X.,Shi, J. K.,Wang, G. J.,Gong, Y.,&北京8701信箱.(2009).Comparison of ionospheric F2 peak parameters foF2 and hmF2 with IRI2001 at Hainan.Advances in Space Research,43(11),1812-1820.
MLA Wang, X.,et al."Comparison of ionospheric F2 peak parameters foF2 and hmF2 with IRI2001 at Hainan".Advances in Space Research 43.11(2009):1812-1820.
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