Fig. 2From: Frequency spectra of horizontal winds in the mesosphere and lower thermosphere region from multistatic specular meteor radar observations during the SIMONe 2018 campaigna–e Mean zonal, residual zonal, mean meridional, residual meridional, and apparent vertical wind velocities estimated from the SIMONe 2018 Campaign data from Nov 2 to Nov 9, 2018. Panel f shows the meteor counts during the campaign period. Mean winds were estimated using specular meteor events that occurred at a given altitude during 30 min and 1 km time-altitude bins and inside the total radar illuminated areaBack to article page