Comparison of total electron content calculated using the IRI with observations in China |
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| Institution: | 1. Telecommunications and ICT for Development Laboratory, Abdus Salam International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151 Trieste (TS), Italy;2. Institute of Geophysics and Astronomy (IGA), La Habana, Cuba;1. Department of Physics, NTNU, 7491 Trondheim, Norway;2. Birkeland Centre for Space Science, 5020 Bergen, Norway;3. Teknova AS, Tordenskjolds Gate 9, 4612 Kristiansand, Norway;1. The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy;2. Institute for Radio Astronomy, National Academy of Science of Ukraine, Kharkiv, Ukraine;1. IZMIRAN, Kaluzskoe Sh. 4, Troitsk, Moscow 108840, Russia;2. Department of EEE, Hacettepe University, Beytepe, Ankara 06800, Turkey;3. Space Research Center, PAS, Barticka 18-A, Warsaw, Poland |
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| Abstract: | Values of total electron content (TEC) calculated using the International Reference Ionosphere (IRI-86 and IRI-90) are compared with the observations at Xinxiang based on the Faraday rotation measurement. It is found that the IRI gives acceptable values with respect to the observations during low solar activity. Generally the IRI-90 is better than the IRI-86 and the URSI coefficients are better than the CCIR coefficients in the calculation of TEC. Making use of the foF2 and M(3000)F2 calculated using the Asia Oceania Region F2-layer mapping (AOR) instead of using the CCIR or the URSI coefficients, the IRI gives more accurate TEC values. In October-April during high solar activity, however, the IRI obviously underestimates TEC in the daytime, which could be due to an improper topside electron density profile. |
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