Mace’s Recent Comments

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  Artic Ice is more concentrated than last year

  Good news -- the Arctic ice is in fact more concentrated than this time last year. This should be a boon for the polar bears. This Univ of Il site shows the concentrations are still greater today than compared to the same day in 2007.  Also select 1980 for the left image and see that it looks comparable.

  http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh?fm=06&a ...
  On Arctic sea ice update: 2008 poised to repeat -- or beat -- 2007 posted 1 year, 5 months ago 11 Responses

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  ice shelf break animation

  Here's the animation of the Ice shelf break

  http://www.esa.int/esaEO/SEMG58VG3HF_planet_0.html

  Keep in mind this 560 sq km shelf break is .1% of the total sea ice increase at present. That does not explain the increase in sea ice of 800,000 sq km.On Arctic sea ice update: 2008 poised to repeat -- or beat -- 2007 posted 1 year, 5 months ago 11 Responses

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  The trend in S Hemisphere sea ice

  NASA data shows the trend in S Hemisphere sea ice is up. This does not prove a future direction. This is a measure of the historical trend from 1979 to present.  

  Set the Hemisphere to 'Southern', set the image to 'extent anamolies':

  http://nsidc.org/data/seaice_index/archives/image_select. ...

  The trend shows a  1.8% growth per decade but with a  variation of +/- 2.2%. As noted, there is wider variation in the Southern Hemisphere than in the north.
  On Arctic sea ice update: 2008 poised to repeat -- or beat -- 2007 posted 1 year, 5 months ago 11 Responses

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  Combined sea ice extent

  The NSIDC is also reporting that the S Hemisphere has .8 M sq km more sea ice than the average.

  So the net global sea ice is up by +.4 M sq km.

  Do you think these are counter trends, some kind of feedback loop or unrelated?On Arctic sea ice update: 2008 poised to repeat -- or beat -- 2007 posted 1 year, 5 months ago 11 Responses