%0 Journal article %A Notz, Dirk %A Community, SIMIP %T Arctic Sea Ice in CMIP6 %R 10.1029/2019GL086749 %R 10.23689/fidgeo-4092 %J Geophysical Research Letters %V 47 %N 10 %X We examine CMIP6 simulations of Arctic sea‐ice area and volume. We find that CMIP6 models produce a wide spread of mean Arctic sea‐ice area, capturing the observational estimate within the multimodel ensemble spread. The CMIP6 multimodel ensemble mean provides a more realistic estimate of the sensitivity of September Arctic sea‐ice area to a given amount of anthropogenic CO2 emissions and to a given amount of global warming, compared with earlier CMIP experiments. Still, most CMIP6 models fail to simulate at the same time a plausible evolution of sea‐ice area and of global mean surface temperature. In the vast majority of the available CMIP6 simulations, the Arctic Ocean becomes practically sea‐ice free (sea‐ice area <1 × 106 km2) in September for the first time before the Year 2050 in each of the four emission scenarios SSP1‐1.9, SSP1‐2.6, SSP2‐4.5, and SSP5‐8.5 examined here. %U http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/8432 %~ FID GEO-LEO e-docs