Plot of the week: the area with severe cold in North America is clearly decreasing. Details: fraction of land area in 25-50N, 50-130W with the coldest day of the year (TNn) colder than the 10-yr return value fitted on 1901-1950. Data: Berkeley Earth. @RARohde @ClimateOfGavin pic.twitter.com/CrqMREJE7z

— Geert Jan van Oldenborgh (@gjvoldenborgh) February 2, 2019