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Baffin Island Lake Sediment Core

  1. Dec 31, 2009 #1


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    A published http://www.pnas.org/content/106/44/18443.abstract" has found that recent changes in the climate of Baffin Island are unique over the past 200,000 years. This is notable because between 119 to 124 Kyears ago, the global climate was thought to be about 2C warmer than our current climate with sea levels approximately 7 meters higher. However, that past warming was driven by changes in the Earths orbit which resulted in the area near Baffin Island receiving significantly more sunshine during the summer. Most of the Greenland Ice sheet had also melted during that time. So, ice cores from Greenland are not fully intact further back in time than about 120K years ago which is sometimes referred to as Marine Isotope Stage 5E.

    Ordinarily we would also expect a long term cooling trend to be currently occurring near Baffin Island. This is because the earths orbit has been gradually reducing the amount of summer sunshine in the Arctic for the past 8,000 years and this trend is expected to continue for another 4,000 years. However, this study is "clear evidence for warming in one of the most remote places on Earth at a time when the Arctic should be cooling because of natural processes."


    Here's a http://www.colorado.edu/news/r/fa189a8186a324d8f62b5d55ba4b8969.html" [Broken] to the press release and a quote:


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    Last edited by a moderator: May 4, 2017
  2. jcsd
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