A blockbuster Chinese study of Tibetan tree rings by Liu et al 2011 forecasts a cooling planet ’til 2068.
In addition, the study shows that today’s climate is normal when compared to the last 2,500 years. The temperature, the rate of change — the world has seen it all before.
Amplitudes, rates, periodicities and causes of temperature variations in the past 2,485 years and future trends over the central-eastern Tibetan Plateau [Chinese Sci Bull,]
In Tibet, temperatures were about the same as today on at least four occasions — in late Roman times (those chariots!), again in the dark ages, then in the middle ages (the Vikings?), and today.
“Clearly, these climate cycles have nothing to with human civilization,” says this article on joannenova.com. The team found natural cycles of many different lengths: 2-3 years, 100 years, 199 years, 800 years, and 1,324 years. The cold periods are associated with sunspot cycles.
These brave scientists have published exact predictions for the next 100 years. They think it will cool til 2068, then warm again, though not to the same warmth as 2006 levels.
Though these predictions come from tree-ring studies in Tibet, the results agree reasonably well with hundreds of other studies from all around the world (from Medieval times, Roman times, the Greenland cores).
See all of this great article, including several graphs:
Thanks to Burt Rutan, Rens van Rijswijk and Craig Adkins for this link
“Real science here, not the biased fraud from IPCC,” says Burt. “Stock up on your overcoats… :-)”
Liu Y, Cai Q F, Song H M, et al. Amplitudes, rates, periodicities and causes of temperature variations in the past 2485 years and future trends over the central-eastern Tibetan Plateau. Chinese Sci Bull, 2011, 56: 2986-2994, doi: 10.1007/s11434-011-4713-7 [ Climate Change over the Past Millennium in China.]