The electron densities, meridional winds, and temperatures at 250 km altitude are shown for three representative nights obtained from the WACCM-X simulation. An increase in electron densities is seen at 21, 23, and 21 LT, respectively (top panel). Simultaneously, the meridional wind is poleward directed at that time (middle panel). Moreover, the neutral temperature decreases due to the reversal in meridional wind at that time (bottom panel).