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