sunshine hours

December 5, 2013

Arctic Sea Ice Extent is Only 240,000 sq km ( 2% ) Below 1981-2010 Mean – and Higher than 1996 and 1998 too!

Filed under: Arctic Sea Ice — sunshinehours1 @ 7:40 AM
Tags: ,

Arctic Sea Ice Extent is Only 240,000 sq km Below 1981-2010 Mean.  Which is 2%. And now 2013 is higher than 2 years in the 1990s: 1996 and 1998.

Arctic_Sea_Ice_Extent_Zoomed_2013_Day_338_1981-2010

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4 Comments »

  1. Please tell me why the 1981-2010 average is used.
    Why not 1981-2012?

    Comment by Edmonton Al — December 5, 2013 @ 12:12 PM | Reply

    • The “tradition” in some places is to use the last 30 year period ending on a 0 year.

      The CRU/Met still use 1961-1990 for most of their indexes.

      Cryosphere use 1979-2008 for some reason …

      The WMO says 30 years is climate.

      Comment by sunshinehours1 — December 5, 2013 @ 12:29 PM | Reply

      • Thanks for that. I was just thinking that 2012 would lower the avg and then 2013 would be avg or posibly above,

        Comment by Edmonton Al — December 5, 2013 @ 2:23 PM

      • Antarctic Sea Ice on Crysosphere is higher than mine because of the recent years being so high and their mean being 1979-2008,

        Comment by sunshinehours1 — December 5, 2013 @ 5:39 PM


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