A carbon level of 1,000-2,000 ppm will prevent that interglacial from happening and will melt Antarctica by that point in time. For the past 1,000,000 years, t

A carbon level of 1,000-2,000 ppm will prevent that interglacial from happening and will melt Antarctica by that point in time. For the past 1,000,000 years, through many interglacials, the carbon level has never exceeded 300 ppm. If you look at what "should" be happening right now then we should be cooling. The last interglacial ended 10,000 years ago and the fast Milankovich cycle caused by oscillations of the axial tilt is in a cooling (decreasing tilt) trend. If prior ice age cycles held we should be seeing cooling and the formation of continential glaciers in northern Canada. That natural cycle has been decisively broken.