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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

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2011 Sea Ice Minimum

Posted on 27 September 2011 by Rob Honeycutt

If you enjoy Peter Sinclair's YouTube video series here is his latest installment which includes footage of James Hansen, ice pilot Arne Sorensen, Stefan Rahmstorf, and Julienne Stroeve from the NSIDC.

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Comments 51 to 54 out of 54:

  1. Relating to my Gompertz graphic above, and other discussion about S curves, I just posted several updated versions including one based on the complete 1972-2011 Uni Bremen extent time series, and another for PIOMAS volume, More explanation/discussion at Neven's place: http://neven1.typepad.com/blog/2011/10/september-2011-sea-ice-extent-looking-ahead.html http://neven1.typepad.com/blog/2011/10/september-2011-sea-ice-volume-looking-back-and-ahead.html
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  2. NASA weighs in on the 2011 melt season. The near-record ice-melt followed higher-than-average summer temperatures, but without the unusual weather conditions that contributed to the extreme melt of 2007. "Atmospheric and oceanic conditions were not as conducive to ice loss this year, but the melt still neared 2007 levels," said NSIDC scientist Walt Meier. Two good video segments.
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  3. This image always amuses me, and it can be applied to any year which isn't a record : (Source)
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  4. I've updated my model with data up to Sept 2011 and the revised prediction for Sept 2012 is 4.584938 +/- 1.031588 M km^2. As before, this is not a serious attempt to predict this years September average sea ice extent, just experimenting with the GPML toolkit, as Roy Spencer would say "for entertainment purposes". Having said which I'd be surprised if the actual extent lay outside the 95% credible interval, very happy if it were above, (much) less so if below.
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