When will this Interglacial end? + The "In the 1970s they feared an Ice Age" Myth.
1970s cooling, again – StoatJust when you thought this tripe was dead, it comes round again. Well, its winter at least in this hemisphere, and a bit chilly, so perhaps it seems plausible – the septics usually have trouble telling weather from climate.
Anyway, your reference is We’re number 1! which provises you a handy link to The Myth of the 1970s Global Cooling Scientific Consensus – the paper that the denialists are too scared to address.http://journals.ametsoc.org/doi/abs/...2008BAMS2370.1
Comment from John Mashey
The natural course of things is that Milkovitch Cycle that triggered the end of the Ice Age fizzles out, the CO2 released then and at the start of the interglacial starts slowly being absorbed by the sea and by rock weathering, causing the global climate to cool over a few millennia.There’s been much good research over last 10 years, and it is increasingly clear that without humans, we’d already be on the long slow (if jiggly) downward CO2 temperature path. if I recall aright, CO2 ought to be down around 240-260ppm by now. Archer, Chapter 12:
Very clear discussion of trigger points and CO2 levels, finishing with:
“If mankind ultimately burns about 2000 Gton C (this is about the business-as-usual forecast for the coming century), then it looks as though climate will avoid glaciation in 50 millennia as well, waiting until the next period of cold summers 130 millennia from now.”
By releasing Gigatonnes of man-generated CO2 into the atmosphere, we have disrupted this cycle, and the next major glacial cycle is postponed, perhaps for a long time. Some CO2 might have been ok, but this time we may have overdone it, unless we put the brakes on in time.