Fig. 5

GW-induced root-mean-square (RMS) wind and GW drag UT variations during a minor SSW. Altitude–UT variations of the zonal mean a GW-induced RMS wind fluctuations in m s\(^{-1}\) and b zonal drag in m s\(^{-1}\) day\(^{-1}\), where red (positive) is eastward and blue (negative) is westward drag. White vertical dashed and dotted lines denote the onset and the end of the minor sudden warming (Yiğit and Medvedev 2012, Figure 2)