Day to Day Variability of Ionospheric Parameters at Mid Latitude for Conjugate Locations
Citation
Yogita dubey, Sahla Rizvi, Geeta Khoobchandani, S K Vijay, A K Gwal "Day to Day Variability of Ionospheric Parameters at Mid Latitude for Conjugate Locations", International Journal of Engineering Trends and Technology (IJETT), V52(1),40-47 October 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
F2-region variability of ionospheric parameters ITEC and foF2 at mid latitude location from January 2009 to December 2013 are being studied. For this diurnal, seasonal, monthly and annual variability has been considered. In the present study we have taken variability of both the parameters during quiet as well as disturbed days. The data and analysis method are classified in to three seasons including equinox (March, April, September, and October), winter (January, February, November and December) and summer (May, June, July and August). In this paper we observed that at Athens (380 N-240 E) variation of ITEC and foF2 is maximum during month of April and at Grahmstown (330 S-270 E) both the parameters shows the maximum variation during month of October. Which clearly indicate the presence of equinoxial an7amoly in both the hemisphere at mid latitude.
Reference
1. Aggarwal M, Joshi H P, Iyer K N, Kwak Y-S, Lee J J, Chandra H And Cho K S, Day To Day Variability Of Equatorial Anomaly In Gps-Tec During Low Solar Activity Period, Adv Space Res (Uk), Pp1709- 172049(2012).
2. Akala A.O., Oyeymi E.O., Somoye E.O., Adeloye A.B., And Adewale A.O., “Variability Of Fof2 In The African Equatorial Ionsphere”, Adv. Space Res., Vol. 45, No. 11, Pp. 1311-1314,2010.Doi:10.1016/J.Asr.2010.0.003.
3. Anju Nagar, Mishra S D, Vijay S. K. “ Day To Day Variability Of Low Latitude F-Region Ionosphere During Low Solar Activity” International Journal Of Astrophysics And Space Science, 3(3): 30-41,2015.
4. Araujo-Pradere E.A., T.J. Fuller Rowell, Codrescu M.V., And Bilitza D, “Characteristics Of The Ionospheric Variability As A Function Of Season, Latitude, Local Time, And Geomagnetic Activity”, Radio Sci., Vol.40, No. 5,Pp.m Doi: 10.1029/2004rs003179, 2005.
5. Aravindan P., Iyer K. N., Day to day variability in ionosphere electron content at low latitudes, planet space sci., vol. 38, no.6,pp.743-750.1990. Doi:10.1016/0032- 0633(90)90033-M.
6. Balaji O S, Adeniyi J O, Redicella S M & Doherty P H, Variability Of Total Electron Content Over An Equatorial West African Station During Low Solar Activity , Radio Sci.(Usa),47 (2012).Doi: 10.1029/2011rs004812.
7. Bhare P , Kishor K., Dongra S.K. Purohit P K, Abdul M, Khatarkar P K, Atulakr R, “ Characterstics Of Ionosphere Fof2 And Solar Indices During The 23rd Solr Cycle Over High Latitude Station. Syowa , Antarctica, American Journal Of Climate Change 4 408-416, 2015.
8. Buresova, D. And J. Las ?Tovic ?Ka Changes In The F1 Region Electron Density During Geomagnetic Storms At Low Solar Activity, J. Atmos. Solar-Terr. Phys., 63, 537- 544(2001).
9. Chandra H, Sharma S, And Aung S.W., “Day To Day Variability In The Critical Frequency Of F2 Layer Over The Anomaly Crest Region, Ahmedabad”, J. Ind. Geophys.Union, Vol. 13, No. 4, Pp. 217-226, 2009.
10. Chouhan V, Singh O P & Birbal S, Diurnal And Seasonal Variation Of Gps-Tec During A Low Solar Activity Period As Observed At A Low Latitude Station Agra, Indian J Radio Space Physics, 40, 26 (2011).
11. Dabas R.S, Bhuyan P.K., Tyag T.R Bharadwaj R.K.,.Lal J.B, “Day To Day Changes In Ionospheric Electron Content At Low Latitudes”, Radio Sci., Vol. 19, No. 3, Pp.746-7491984, .Doi: 10.1029/Rs019i003p00749.
12. Dabas R.S., Sharma N., Pillai M.G.K. And Gwal, A.K. “Day To Day Variability Of Equatorial And Low Latitude F-Region Ionosphere In The Indian Zone”, J. Atmos. Terr. Phys., Vol. 68, No. 11, Pp. 1269-1277, 2006,.Doi:10.1016/J.Astp.2006.03.009.
13. Forbes, J. M., Palo, S. E., And Zhang, X. L.: Variability Of The Ionosphere, J. Atmo. Sol. Terr. Phys., 62, 685– 693, 2000.
14. Foster J. C., Erickson P. J., Coster A. J., Goldstein J., Rich F. J. “Ionospheric Signatures Of Plasmaspheric Tails”. Geophys. Res. Lett., 29(13), Doi:10.1029/2002gl015067, 2002.
15. Fotiadis, D.N., S.S. Kouris And B. Zolesi Prelim- Inary Results On The Within-The-Hour Ionospheric Vari- Ability, Phys. Chem. Earth (C), 26 (5), 315-318, 2001.
16. Fotiadis, D.N., S.S. Kouris, V. Romano And B. Zolesi Climatology Of Ionospheric F-Region Distur- Bances, Ann. Geophysics, 47 (4), 1311-1323, 2004.
17. Fuller-Rowell, T. J., Codrescu, M., And Wilkinson, P.: Quantitative Modeling Of The Ionospheric Response To Geomagnetic Activity, Ann. Geophys., 18, 766–781, 2000.
18. Gupta J.K. And Singh L “ Long Term Ionospheric Electron Content Variations Over Delhi. Ann. Geophys- Sicae Vol-18, 1635-1644, 2001.
19. Houminer Z And Soicher H, Improved Short –Term Predictions Of Fof2 Using Gps Time Delay Measurement , Radio Sci(Usa),31(5) Pp1099-1108, 1996.
20. Kane R P, Ann. Geophysics 38 145, 1982.
21. Klubuchar J A Proc. Of The International Symp. On Beacon Satellite Studies Of The Earths Environment (New Delhi) India P3, 1983.
22. Kouris, S. S., Bradley, P. A., & Dominici, P., Angeo, 16, 1039,1998.
23. Kouris, S.S. And D.N. Fotiadis Ionospheric Vari- Ability: A Comparative Statistical Study, Adv. Space Res. 29 (6), 977-985, 2002.
24. Kouris, S.S., B. Zolesi, D.N. Fotiadis And C. Bianchi On The Variability Within-The-Hour And From Hour-To Hour Of The F-Region Characteristics Above Rome, Phys. Chem. Earth (C), 25 (4), 347-351, 2000.
25. Kouris, S.S., D.N. Fotiadis And B. Zolesi Specifica- Tions Of The F-Region Variations For Quiet And Disturbed Conditions, Phys. Chem. Earth (C), 24 (4), 321-327, 1999.
26. Kouris, S.S., K.V. Polimeris And Lj. R. Cander (2006a): Specifications Of Tec Variability, Adv. Space Res., 37, 983-1004.
27. Kouris, S.S., K.V. Polimeris, Lj. R. Cander And L. Cirao- Lo Solar And Latitude Dependence Of Tec And Slab Thickness, J. Atmos. Solar-Terr. Phys., 70, 1351- 1365, 2008, Doi:10.1016/J.Jastp.2008.03.009.
28. Lucilla A Wernik A W, Materassi M, Spogli L,Bougard B& Monico J F G, Low Latitude Scintillation: A Comparison Of Modeling And Observations Within The Cigala Project : Ieee Pro (Ieee, Italy), 2011, Doi: 10.1109/Ursigass.2011.
29. Mendillo, M., Rishbetha, H., Roble. R. G., And Wroten, J.: Mod- Elling F2-Layer Seasonal Trends And Day-To- Day Variability Driven By Coupling With The Lower Atmosphere, J. Atmos. Sol. Terr. Phys., 64, 1911–1931, 2002
30. Oron S, Ujanga F M D, And Senyonga T J S, Ionospheric Tec Variations During The Ascending Solar Activity Phase At An Equatorial Station, Uganda, Indian Journal Of Radio & Space Physics Vol 42(2) Pp 7-17, 2013.
31. Rastogi R G And S J Alex Atmos. Terr. Phys. 49 1133, 1987.
32. Rawer, K., S.S. Kouris And D.N. Fotiadis Vari- Ability Of F2 Parameters Depending On Modip, Adv. Space Res., 31 (3), 537-541, 2003.
33. Rishbeth, H. And Mendillo, M.: Patterns Of F2-Layer Variability, J. Atmo. Sol. Terr. Phys., 63, 1661–1680, 2001.
34. Rishbeth, H., “How The Thermospheric Composition Affects The Ionospheric F2-Layer “ J. Atmos. Terr. Phys., 60, 1385-1402, 1998.
35. Ritesh Yadav ., “Comparative Study Of High And Mid Latitude Fof2 During Low Solar Activity”, International Journal Of Innovative Research, Engineering And Technology ., Vol. 5, Pp 2347-6710[5], 2016.
36. Sarayna P L Prasad D S V, Niranjan K, Rama Rao P V S, Short Term Variability In Fof2 And Tec Over Low Latitude Indian Stations, Indian Journal Of Radio & Space Physics Vol (44)(3) Pp 14-27, 2015.
37. Sethi N. K., Geol M. K., Mahajan K. K., “Solar Cycle Variations Of Fof2 From Igy To 1990”, Ann. Geophys., 20, Pp. 1677-1685, 2002.
38. Smita Dubey , Rasmi Wahi , Kalpna Maski, S K Vijay And A K Gwal, Day To Day Variability Of Iec At Mid Latitude During Sunspot Minimum, Ann. J Phys. 78b(2),229-232, 2004.
39. Sradar N, Singh A.K. , Nagar A, Mishra S D And Vijay S.K. “ Study Of Longitudinal Variation Of Ionospheric Parameters –A Detailed Report. J. Ind. Geophys . Union Vol-16 No. 3, Pp 113-133, 2012.
40. Venkatesh, K., Rama Rao, P.V.S, Prasad, D.S.V.V.D, Niranjan, K., And Savanya, P.L, Study Of Tec, Slab Thickness And Neutral Temperature Of Thethermosphere In The Indian Low Latitude Sector, Ann. Geophys., 29, 1635-1645, 2011.
41. Zolesi, B., Kouris S.S., Fotiadis D.N. And Scotto C. Evaluation Of The Ionospheric Noise And Vari- Ability Within-The-Hour By 5 Min Ionospheric Sound- Ings, Phys. Chem. Earth (C), 26 (5), 359-362, 2001.
Keywords
Mid latitude, Critical frequency, Ionospheric disturbances, Variability.