Greenland has been warmer that currently several times in the last 8000 years. That is Greenland has been warmer than today, with lower levels of Carbon Dioxide levels that today. Two studies have been released over the past few weeks that show that there was less Artic Sea Ice than today, and higher temperatures.
The University of Copenhagen has a study which examined driftwood deposits over the last ten thousand years, and it showed that “For several thousand years, there was much less sea ice in the Arctic Ocean â€“ probably less than half of current amounts.” .Â During a period between 8000 and 5000 years ago called the Holocene Climate Optimum there was half the level of sea ice than there is today. Yet the world did not tip into “runaway climate change” as the doom-sayers predict we will today, with a higher level of ice cover.
Another peer reviewed paper published by Takuro Kobashi and others shows that Greenland surface temperatures where higher than today several times over the last 4000 years. Of course you can be sure that none of these studies will be mentioned on the ABC or published in the Fairfax media.