Validation of IRI-2007 against TEC observations during low solar activity over Indian sector |
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| Authors: | NK Sethi RS Dabas SK Sarkar |
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| Institution: | 1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008;2. Key Laboratory of Space Object and Debris Observation, Chinese Academy of Sciences, Nanjing 210008;3. State Key Laboratory of Astronautic Dynamics, Xi’an Satellite Control Center, Xi’an 710043;1. Institute for Geophysics, Batajni?ki drum 8, 11000 Belgrade, Serbia;2. Faculty of Mining and Geology, Physics Cathedra, University of Belgrade, Dju?ina 7, 11000 Belgrade, Serbia;1. Institute of Solar-Terrestrial Physics SB RAS, 126a, Lermontova Str., Irkutsk, 664033, Russia;2. Virginia Tech, 302 Whittemore, Blacksburg, VA, 24061, USA;3. Institute for Space-Earth Environmental Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan;4. Dartmouth College, 14 Engineering Drive, Hanover, NH, 03755, USA;5. University of Alaska Fairbanks, 903 Koyukuk Drive, AK, 99775-7320, USA;6. The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA;1. Department of Physics, Mbarara University of Science and Technology, P O Box 1410, Mbarara, Uganda;2. South African National Space Agency (SANSA) Space Science, P O Box 32, Hermanus 7200, South Africa;3. Department of Physics, Busitema University, P O Box 236, Tororo, Uganda;1. Institute of Atmospheric Physics, Czech Academy of Sciences, Bo?ní II/1401, Prague 4, Czech Republic;2. Space Research and Technology Institute, Bulgarian Academy of Sciences, Bl. 3 Acad. G. Bonchev Str.1113, Sofia, Bulgaria;1. Space Research and Technology Institute - Bulgarian Academy of Sciences, Sofia, Bulgaria;2. Pushkov Institute of Terrestrial Magnetism, the Ionosphere and Radio Wave Propagation, Russian Academy of Sciences, Troitsk, Moscow Region, Russian Federation;3. Institute of Geodynamics, Romanian Academy, Bucharest, Romania |
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| Abstract: | Published values of Total Electron Content (TEC) measured by ATS-6 are used to assess the latest available IRI-2007 model during solar minimum over Indian sector covering equatorial to low-mid-latitudes stations. The study reveals that during all seasons and at all locations, in general, the TEC predicted by NeQuick and IRI01-corr options provided in the IRI-2007 model shows much better agreement with the TEC observations as compared to those generated by IRI-2001.option. TEC predicted using NeQuick option found to be little more closer to the observation except at equatorial station during daytime, while IRI-2001 option highly overestimates the TEC in all seasons and times. |
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