TY JOUR TI Topside ionosphere during solar cosmic ray bursts and Forbush decreases in galactic cosmic rays KW solar cosmic rays KW galactic cosmic rays KW ionosphere KW geomagnetic disturbance JO Solar-Terrestrial Physics AU Янчуковский, В.Л. AU Белинская, А.Ю. PY 2022 IS 8 PB Институт солнечно-земной физики СО РАН