I saw it on Twitter today, so it must be true: several posts in succession, all from self-avowed defenders of the Constitution, liberty, blah blah, etc., to the effect that the "Antarctic has been warming for 600 years."
Hmm, I thought as I added these individuals to my "disappear" list on TweetDeck (a time- and annoyance-saving strategy that makes their future tweets invisible to me), I wonder what that is all about?
As I continued to comb the Web for global warming items to tweet, I came across an article in an Australian publication, Crikey, titled "Antarctic melt alarm as scientists find 'very unusual' warming." Mystery solved.
The article's lead paragraph: "Scientists have drilled 364 metres into ice to complete the first ever comprehensive temperature record of the Antarctic Peninsula — and they’ve found evidence of 'very unusual' and dramatic warming over the last century." [emphasis added]
The article goes on to say, indeed, that the peninsula has been warming slowly for 600 years, but takes some pains to explain the reason for concern:
"The research showed that the Peninsula has seen a rapid warming over the past 100 years, but that this has also come on top 600 years of more gradual, natural warming in the region ...
"The leader of the research expedition, Dr Robert Mulvaney from the British Antarctic Survey, said: 'The exceptionally fast warming over the last 100 years came on top of a slower natural climate warming that began around 600 years ago — well before the industrial revolution — so it is possible that we are now seeing the combination of natural and man-made warming in this area.'