Physics
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jatp...56..417k&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 56, no. 3, p. 417-422
Physics
4
Annual Variations, Atmospheric Physics, Earth Ionosphere, Electron Density (Concentration), Electron Density Profiles, Faraday Effect, Ionospherics, Satellite Transmission, Solar Activity, Solar Activity Effects, China, Coefficients, Comparison, Errors, Statistical Analysis, Synchronous Satellites, Tables (Data)
Scientific paper
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 International Scientific Radio Union (URSI) coefficients are better than the Consultative Committee for International Radio (CCIR) coefficients in the calculation of TEC. Making use of the foF2 and M(3000) F(sub 2) calculated using the Asia Oceania Region F(sub 2)-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.
Jianming Ma
Kailiang Dai
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