The latest, most sophisticated climate models of the Coupled Model Intercomparison Project (CMIP6) have been used to track Arctic Sea Ice Area and Volume over time and make future projections. The vast majority of models predict a practically ice free Arctic in summer (less than 1 million km**2) before 2050. September sea ice area decreases at a rate of 2.73 m**2 per ton of CO2 emissions, and by 4 million km**2 per degree Celsius of average global warming. Future cumulative CO2 emissions of between 500 to 1,100 Gt should finish the ice; with our present level of 40 Gt per year this is between 12.5 and 27.5 years.
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