TEC variability near northern EIA crest and comparison with IRI model

Details TEC variability near northern EIA crest and comparison with IRI model TEC variability near northern EIA crest and comparison with IRI model

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011adspr..48.1221a&link_type=abstract

Advances in Space Research, Volume 48, Issue 7, p. 1221-1231.

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Scientific paper

Monthly median values of hourly total electron content (TEC) is obtained with GPS at a station near northern anomaly crest, Rajkot (geog. 22.29°N, 70.74°E; geomag. 14.21°N, 144.9°E) to study the variability of low latitude ionospheric behavior during low solar activity period (April 2005 to March 2006). The TEC exhibit characteristic features like day-to-day variability, semiannual anomaly and noon bite out. The observed TEC is compared with latest International Reference Ionosphere (IRI) - 2007 model using options of topside electron density, NeQuick, IRI01-corr and IRI-2001 by using both URSI and CCIR coefficients. A good agreement of observed and predicted TEC is found during the daytime with underestimation at other times. The predicted TEC by NeQuick and IRI01-corr is closer to the observed TEC during the daytime whereas during nighttime and morning hours, IRI-2001 shows lesser discrepancy in all seasons by both URSI and CCIR coefficients.

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