Fig. 8From: Global characteristics of the westward-propagating quasi-16-day wave with zonal wavenumber 1 and the connection with the 2012/2013 SSW revealed by ERA-InterimLatitude versus time structures of the W1 Q16DW amplitudes for the geopotential height (left), zonal wind (middle) and meridional wind (right) at three pressure levels: 1Â hPa (top), 10Â hPa (middle) and 30Â hPa (bottom). The thick vertical line denotes the SSW central dateBack to article page