F2 layer response to geomagnetic disturbances in Eastern Asia under the low solar activity

Statistical investigation of the noise added to a model of the effect of solar activities on the plasma of the ionosphere using DEMETER satellite data

“…This effect which is most pronounced in equinox does not induce salient solar activity variation (Liu et al, 2012a u.ac.jp/dstdir/index.html. The effects of geomagnetic disturbances on the ionosphere are too complicated to be considered in modeling, and have thus become a major concern (Adekoya and Adebesin, 2014;Danilov, 2013Danilov, , 2001Pirog et al, 2010). Since those days with low geomagnetic disturbance are only considered in this study (see section 2), the effects of such disturbances are not taken into account in the proposed model.…”