Fig. 4From: Longitudinal structures of zonal wind in the thermosphere by the ICON/MIGHTI and the main wave sourcesThe contribution of potential sources to WN1 in the altitude range of 100–106 km and 210–300 km in four seasons at three latitudes. Each subplot is divided into two panels, the top and bottom panels cover the altitude range of 210–300 km and 100–106 km, respectively. The blue, green, yellow, purple and orange line indicate the contribution of DW2, D0, SW1, SW3 and SPW1, respectivelyBack to article page