Comparison of total electron content obtained from GPS with IRI |
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| Institution: | 1. Institute of Geodesy, Warmia and Masuria University in Olsztyn, Poland;2. West Department of the IZMIRAN of the Russian Academy of Science, Kaliningrad, Russia;1. Department of Physics, Indian Institute of Technology Roorkee, Uttarakhand, Roorkee 247667, India;2. Guru Nanak Institute of Technology, JIS Group, Kolkata 700114, India;1. Ann and H.J. Smead Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO 80309, USA;2. High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO 80301, USA;1. Institute of Airspace Control – ICEA, São José dos Campos, Brazil;2. Instituto Federal de Goiás – IFG, Goiânia, Brazil;3. Instituto Tecnológico de Aeronáutica – ITA, São José dos Campos, Brazil;4. Instituto de Aeronáutica e Espaço – IAE, São José dos Campos, Brazil;5. Instituto Nacional de Pesquisas Espaciais – INPE, São José dos Campos, Brazil;6. Universidade do Vale do Paraiba – UNIVAP, São José dos Campos, Brazil;1. Pakistan Space and Upper Atmosphere Research Commission (SUPARCO), P.O. Box 8402, Karachi 75270, Pakistan;2. Asian Disaster Preparedness Center, SM Tower, 24th Floor, 979/69 Paholyothin Road, Samsen Nai Phayathai, Bangkok 10400, Thailand;3. China Research Institute of Radiowave Propagation (CRIRP), P.O. Box 6301, Qingdao 266107, China;4. Institute of Space Science and Technology, University of Karachi, Karachi 75270, Pakistan |
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| Abstract: | The comparison of the IRI model with TEC estimated using the continuous GPS observations of European part of IGS network is considered. The variability of a measured TEC was analyzed for the low solar activity in the period 1996–1997. We used IRI 90 version with upped height limit 2000 km and IRI 95 up to 1000 km. It is shown that the difference between model and measured TEC depends on latitude and season.Generally, IRI 95 underestimate and IRI 90 overestimate the TEC relative to GPS measurements. The relative difference may reach over 50%. |
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