Midday bottomside electron density profiles during moderate solar activity and comparison with IRI-2001

Details Midday bottomside electron density profiles during moderate solar activity and comparison with IRI-2001 Midday bottomside electron density profiles during moderate solar activity and comparison with IRI-2001

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009adspr..43..973s&link_type=abstract

Advances in Space Research, Volume 43, Issue 6, p. 973-983.

Computer Science

1

Scientific paper

Bottomside electron density (Ne-h) profiles during midday (10-14 h) are analyzed using modern digital ionosonde observations at a low-middle latitude station, New Delhi (28.6N, 77.2E, dip 42.4N), for the period from January 2003 to December 2003, pertaining to moderate solar activity (MSA). Each individual profile is normalized with respect to the peak height and density (hmF2, NmF2) of the F2-region. These profiles are compared with those obtained from the International Reference Ionosphere (IRI-2001) model. Bilitza [Bilitza, D. International Reference Ionosphere 2000. Radio Sci. 36 (2), 261-275, 2001] using both the options namely: Gulyaeva’s model [Gulyaeva, T.L. Progress in ionospheric informatics based on electron density profile analysis of ionograms. Adv. Space Res. 7 (6) 39-48, 1987] and B0 Tab. option [Bilitza, D., Radicella, S.M., Reinisch, B.W., Adeniyi, J.O., Mosert Gonzalez, M.E., Zhang, S.R., Obrou, O. New B0 and B1 models for IRI. Adv. Space Res. 25 (1), 89-95, 2000]. The study reveals that during summer and equinox, the IRI model with B0 Tab. option in general, produces better agreement with the observed median profiles, while the IRI predictions using Gulyaeva’s option, overestimate the electron density distribution at all the heights below the F2-peak. However, during winter, in general, the IRI model, using both the options, reveals shows fairly good agreement with the observations.

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