TERRAPUB Earth, Planets and Space

Earth Planets Space, Vol. 64 (No. 6), pp. 505-512, 2012

Observation of the ionospheric storm of October 11, 2008 using FORMOSAT-3/COSMIC data

I. E. Zakharenkova1,2, A. Krankowski2, I. I. Shagimuratov1, Yu. V. Cherniak1, A. Krypiak-Gregorczyk2, P. Wielgosz2, and A. F. Lagovsky3

1West Department of IZMIRAN, Kaliningrad, Russia
2Geodynamics Research Laboratory, University of Warmia and Mazury, Olsztyn, Poland
3Immanuel Kant State University of Russia, Kaliningrad, Russia

(Received June 11, 2010; Revised March 16, 2011; Accepted June 24, 2011; Online published July 27, 2012)

Abstract: The electron density profiles retrieved from the COSMIC radio occultation measurements were examined in order to estimate the possibility of its use as additional data source to study changes in electron density distribution occurred during ionospheric storms. The ionosphere behaviour during moderate geomagnetic storm which occurred on October 11, 2008 was analysed. The short-duration positive effect was revealed distinctly in GPS TEC and ionosonde measurements. For the European mid-latitude region it reached the factor of 2 or more relative to the undisturbed conditions. COSMIC data were analyzed and their validity was tested by comparison with ground-based measurements. It was shown the good agreement between independent measurements both in quiet and disturbed conditions. Analysis of COSMIC-derived electron density profiles revealed changes of the bottom-side and topside parts of the ionosphere.
Key words: Radio occultation, COSMIC, GPS, ionosphere.

Corresponding author E-mail: zakharenkova@mail.ru

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