Another story you won’t see anywhere on the ABC, firmly stuck in its groupthink mode and working itself up into a lather plugging a litany of dire and alarmist statements from a symposium on coral reefs, which has predicted, amongst other things, rises in sea levels of 1.7m by the next century (far exceeding even the “gold standard” IPCC projection).
I wonder if a “coral reef symposium” would get any media interest at all if it didn’t follow the well worn-path of alarmism and links to man-made climate change? Probably not.
And why, I wonder, did the ABC choose not to report on a paper published in the peer-reviewed journal Nature Climate Change that showed the Roman and Medieval periods were actually warmer than the present, without any help from man-made CO2? Because it doesn’t fit the rusted-on groupthink, maybe?
A new study measuring temperatures over the past two millennia has concluded that in fact the temperatures seen in the last decade are far from being the hottest in history.
A large team of scientists making a comprehensive study of data from tree rings say that in fact global temperatures have been on a falling trend for the past 2,000 years and they have often been noticeably higher than they are today – despite the absence of any significant amounts of human-released carbon dioxide in the atmosphere back then.
“We found that previous estimates of historical temperatures during the Roman era and the Middle Ages were too low,” says Professor-Doktor Jan Esper of the Johannes Gutenberg-Universität Mainz, one of the scientists leading the study. “Such findings are also significant with regard to climate policy.” (source)
They certainly are. But don’t expect such policies to change anytime soon.
Warmist journal New Scientist does its best to prop up the consensus and wheels out Michael “Stick” Mann to rubbish the results:
The finding does not change our understanding of the warming power of carbon dioxide. In fact, it shows that human CO2 emissions have interrupted a long cooling period that would ultimately have delivered the next ice age. [So we've stopped an ice age? I would have thought that was probably quite good news...]
Esper says temperature reconstructions will have to be redone because past studies probably underestimated temperatures during the medieval warm period and other warm periods going back to Roman times. The further back in time, the greater the underestimate would be.
But others have doubts. [Michael] Mann argues that Esper’s tree-ring measurements come from high latitudes and reflect only summer temperatures. “The implications of this study are vastly overstated by the authors,” he says. (source)
Because when you’re an activist first and a scientist second, like Mann and the rest of the Hockey Team, your mind is firmly closed to even the possibility of contradictory evidence.
Link to paper here.