reinhard-k.-h.-schiemann-grenville-lister-rosalyn-hatcher-dan-hodson-bryan-lawrence-len-shaffrey-andrea-dittus-jon-robson-ben-harvey-kevin-hodges-oscar-martinez-alvarado-steve-woolnough-andrew-turner.pdf
s−1) (red: ERA5; black CANARI LE; grey: individual LE members. The dotted lines indicate the axis of the stratospheric polar vortex. i.e. where !U peaks, while the dashed lines are the zero-wind line. The 20 m s −1 contours are thickened to highlight the stratospheric polar vortex