Extended Data Fig. 1: Seasonal changes, 1955-2005.
From: Substantial twentieth-century Arctic warming caused by ozone-depleting substances
Monthly, ensemble-mean, 1955-2005 change in (a) global and (b) Arctic surface air temperature (\({{\rm{T}}}_{{\rm{s}}}\)) and (c) Sea Ice Extent (SIE, the total area with sea ice concentration exceeding 15%), in the CAM5LE model. On the curves for the FixODSO3 and FixODS ensembles, small and large circles highlight the months in which the difference with the Historical ensemble is statistically significant at the 95% and 99% level, respectively, (from a two-tailed t-test).
