An intercomparison of cut-off lows in the southern hemisphere using recent 1reanalyses: ERA-Interim, NCEP-CFRS, MERRA-2, JRA-55, and JRA-25

Four recent reanalysis products ERA-Interim, NCEP-CFSR, MERRA-2 and JRA-55 are evaluated and compared to an older reanalysis JRA-25, to quantify their confidence in representing Cut-off Lows (COLs) in the Southern Hemisphere. The climatology of COLs based on the minima of 300-hPa vorticity (