Вісник № 47

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Simulation of ionospheric plasma velocity along the geomagnetic field lines due to the horizontal neutral winds
(НТУ "ХПІ", 2014) Grinchenko, S. V.; Dziubanov, D. A.; Ziuzgina, Iu. E.
With use of horizontal neutral winds model HWM93 there are calculated the elements of a global picture of thermosphere circulation, the changes of value and direction of thermosphere wind over Kharkiv. The calculations of constituent part of vertical component of ionospheric plasma velocity caused by horizontal neutral winds were made.
Seasonal anomaly in variations of global distributions of F2-layer electron density according to CCIR model
(НТУ "ХПІ", 2014) Grinchenko, S. V.
There are presented the global distributions of electron density ne maxF2 and height hmaxF2 of the main maximum of ionosphere. There are analyzed the basic regularities of longitude-latitudinal variations of these parameters in the northern and southern hemispheres. The main attention is given to the effect of seasonal anomaly. It is shown that, according to calculations by the CCIR model seasonal anomaly appears at latitudes between 15 and 60 degrees N. approximately from 9 to 12 hours of local time. In the southern hemisphere the seasonal anomaly is not observed.