ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2015, Vol. 12, No. 3, pp. 137-146

Meteorological effects of ionospheric disturbances over East Siberia region, according to vertical radio sounding data

M.A. Chernigovskaya1 , K.G. Ratovsky1 , B.G. Shpynev1 
1 Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Russia
We studied seasonal variations of the high-frequency part of the F2 peak density variability caused by the traveling ionospheric disturbances associated with propagation of gravity waves (GWs) from the lower and middle atmosphere. The ionospheric disturbances referred to deviations of the F2 peak electron density NmF2 from the daily average values, i.e., deviation of the observed value from regular behavior. The ionospheric data were obtained from continuous measurements made at vertical sounding ionosondes DPS-4 in Irkutsk and Norilsk in 2008–2010. We identified periods of middle-scale wave-like motions in the stratosphere between November and February 2008–2010 based on the ECMWF ERA-Interim reanalysis data. A noticeable increase in the GW activity was found at the heights of F2 layer during the periods of stratospheric wave activity over the study region. For both stations, the maximum variability in the ionosphere F2-layer was observed in winter; minimum – in summer. The summer–winter difference was more pronounced in case of Norilsk.
Keywords: the lower and upper atmosphere, interaction between atmospheric layers, wave disturbances
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