Articles | Volume 39, issue 4
Regular paper
20 Aug 2021
Regular paper |  | 20 Aug 2021

Climatology of ionosphere over Nepal based on GPS total electron content data from 2008 to 2018

Drabindra Pandit, Basudev Ghimire, Christine Amory-Mazaudier, Rolland Fleury, Narayan Prasad Chapagain, and Binod Adhikari

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Cited articles

Akala, A. O., Rabiu, A. B., Somoye, E. O., Oyeyemi, E. O., and Adeloye, A. B.: The Response of African equatorial GPS TEC to intense geomagnetic storms during the ascending phase of solar cycle 24, J. Atmos. Sol. Terr.-Phy., 98, 50–62,, 2013. 
Ansari, K., Park, K. D., and Panda, S. K.: Empirical and orthogonal function analysis and modeling of ionospheric TEC over South Korean region, Acta Astronaut., 161, 313–324,, 2019. 
Anderson, D. and Fuller-Rowell, T.: The ionosphere, Space environment topics SE-14, Report, Space Environment Center, Boulder, 1999. 
Appleton, E. V. and Ingram, L. J.: Magnetic Storms and Upper-Atmospheric Ionisation, Nature, 136, 548–549,, 1935. 
Bagiya, M. S., Joshi, H. P., Iyer, K. N., Aggarwal, M., Ravindran, S., and Pathan, B. M.: TEC variations during low solar activity period (2005–2007) near the Equatorial Ionospheric Anomaly Crest region in India, Ann. Geophys., 27, 1047–1057,, 2009. 
Short summary
We analyse the climatology of the ionosphere over Nepal based on GPS-derived vertical total electron content (VTEC) during 2008–2018. The study illustrates the diurnal, monthly, annual, seasonal and solar cycle variations in VTEC. The results show equinoctial asymmetry in TEC in maximum phases in 2014, followed by descending, ascending and minimum phases. The winter anomalies are seen during increasing and maximum phases of the solar cycle (2011–2014) from almost all stations considered.