Earth' Recent CLimate Spiral 2.0

[Anomalocaris]

There are temperature cycles of 120,000 years, but it is not nearly extreme enough to cause there to be rain forest in the Antarctica during its upswings.   Antarctica has been continuously covered by continent spanning ice sheet for 35 million years and hadn’t seen rain forests since age of dinosaurs.   The cumulative effect of 70 million years long cooling trend of the earth since the end of Cretaceous is too great for any known current short term climate cycles, or acute disturbances, including what we are causing through our GHG emission,  to overcome.     Even with the full reasonably anticipated effects of anthropogenic climate chamge over the next centuries, the cumulative effect of long term cooling is still dominant and the earth would still remain substantially cooler than the historic average it has experienced over the last 550 million years.

It is just that the acute climate disturbance we cause would make earth hotter than we’ve experienced since Homo sapiens left Africa, and far hotter than our infrastructure, demographic distribution, accustomed agriculture style, have been adapted to function under, and we will pay a much greater price to readapt to the full effects of the Unimpeded disturbance than to rein in the disturbance.