Thursday, November 29, 2012
New paper finds Greenland was 2–3°C warmer than today 4000 years ago
A paper published today in Quaternary Science Reviews finds west Greenland was "2–3°C warmer than today" from 6,000 to 4,000 years ago and that "summer temperatures were warmer than present by at least 7,100 years ago." According to the authors, "the local Greenland Ice Sheet margin was most retracted behind its present position between 6,000 and 5,000 years ago." The paper corroborates ice core data from central Greenland indicating that Greenland was significantly warmer than the present several times over the past 8,000 years despite "safe" levels of CO2. This paper and many others demonstrate that alarmist claims of a 2°C "tipping point" for the Greenland ice sheet are nonsense.
Posted by MS at 9:29 AM