Calibration of IRI-ITU-R peak density and height over the oceans with topside sounding data

Details Calibration of IRI-ITU-R peak density and height over the oceans with topside sounding data Calibration of IRI-ITU-R peak density and height over the oceans with topside sounding data

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010adspr..45..276g&link_type=abstract

Advances in Space Research, Volume 45, Issue 2, p. 276-283.

Computer Science

Sound

Scientific paper

Accuracy of IRI electron density profile depends on the F2 layer peak density and height converted by empirical formulae from the critical frequency and M3000F2 factor provided by the ITU-R (former CCIR). The CCIR/ITU-R maps generated from ground-based ionosonde measurements suffer from model assumptions, in particular, over the oceans where relatively few measurements are available due to a scarcity of ground-based ionosondes. In the present study a grid-point calibration of IRI/ITU-R maps for the foF2 and hmF2 over the oceans is proposed using modeling results based on the topside true-height profiles provided by ISIS1, ISIS2, IK-19 and Cosmos-1809 satellites for the period of 1969-1987. Topside soundings results are compared with IRI and the Russian standard model of ionosphere, SMI, and grouped to provide an empirical calibration coefficient to the peak density and height generated from ITU-R maps. The grid-point calibration coefficients maps are produced in terms of the solar activity, geodetic latitude and longitude, universal time and season allowing update of IRI-ITU-R predictions of the F2 layer peak parameters.

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