Fig. 7From: Latitudinal- and height-dependent long-term climatology of propagating quasi-16-day waves in the troposphere and stratosphereLong-term trend as a function of pressure and latitude of the monthly mean Q16W1 amplitude in (a) temperature and (b) zonal wind obtained from the 39Â year ERA-Interim data sets. Only the results with a confidence level at/above 95% are plotted as contours. The solid and dashed contours denote the positive and negative trends, respectivelyBack to article page