Extended Data Fig. 1: Arctic and Antarctic sea ice extent climatology.
From: Tropical climate responses to projected Arctic and Antarctic sea-ice loss

The seasonal cycle of (a) Arctic and (b) Antarctic SIE [x106 km2] averaged over the years 1979–2000 from six WACCM historical runs (grey) and observational data from the NSIDC Sea Ice database (NSIDC, 2019) (blue). The shading shows the + /-2σ envelope.