Tree-rings prove climate was WARMER in Roman and Medieval times than it is now - and world has been cooling for 2,000 years
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[quote]How did the Romans grow grapes in northern England? Perhaps because it was warmer than we thought.
A study suggests the Britain of 2,000 years ago experienced a lengthy period of hotter summers than today.
German researchers used data from tree rings – a key indicator of past climate – to claim the world has been on a ‘long-term cooling trend’ for two millennia until the global warming of the twentieth century.
This cooling was punctuated by a couple of warm spells…
The finding may force scientists to rethink current theories of the impact of global warming
Professor Esper’s group at the Institute of Geography at JGU used tree-ring density measurements from sub-fossil pine trees originating from Finnish Lapland to produce a reconstruction reaching back to 138 BC.
In so doing, the researchers have been able for the first time to precisely demonstrate that the long-term trend over the past two millennia has been towards climatic cooling.
…Professor Esper said: 'Such findings are also significant with regard to climate policy, as they will influence the way today’s climate changes are seen in context of historical warm periods.’[/quote]
I know liberals love to totally discount things they simply don’t like by criticzing the source so here’s a slightly more academic reference:
Climate in northern Europe reconstructed for the past 2,000 years: Cooling trend calculated precisely for the first time
[quote]In addition to the cold and warm phases, the new climate curve also exhibits a phenomenon that was not expected in this form. For the first time, researchers have now been able to use the data derived from tree-rings to precisely calculate a much longer-term cooling trend that has been playing out over the past 2,000 years. Their findings demonstrate that this trend involves a cooling of -0.3°C per millennium due to gradual changes to the position of the sun and an increase in the distance between the Earth and the sun.
“This figure we calculated may not seem particularly significant,” says Esper. “However, it is also not negligible when compared to global warming, which up to now has been less than 1°C. Our results suggest that the large-scale climate reconstruction shown by the Intergovernmental Panel on Climate Change (IPCC) likely underestimate this long-term cooling trend over the past few millennia.”[/quote]
So there’s something else inconvenient to ignore, just like everything else liberals don’t like. Please feel free to not discuss this just like you don’t discuss anything else that shows your position to be the absolute fraud that it is.[/quote]
Oops, it appears you missed a key phrase in your own quote. Here it is.