Fig. 5From: 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-InterimAltitude-time cross-sections of the zonal-mean temperature averaged from 60 \(^\circ \mathrm{N}\) to 90 \(^\circ \mathrm{N}\) (top) and zonal-mean zonal wind at 60 \(^\circ \mathrm{N}\) (bottom) during the winter of 2012/2013. The thick vertical line denotes 6 January 2013, which is the SSW central dateBack to article page