Sea Ice Update May 30 2014

A quick update for sea ice extent for day 149 of 2014:

  • Global Sea Ice Extent is 639,000 sq km above the 1981-2010 mean.
  • Antarctic Sea Ice Extent is 1,150,000 sq km above the 1981-2010 mean.
  • Arctic Sea Ice Extent is -511,000 sq km below the 1981-2010 mean.

NOAA Data here and here here.

Graphs below. Click for bigger.







  1. 2014 NH Sea Ice Extent based on Recent History from MASIE

    In the last 7 years, 2007-2013 inclusive, the Average maximum was 15.83 MKm2, with a variation of +2% to -3%.

    In the same period, the average minimum was 5.32 MKm2 for an average loss of 10.69 MKm2 or 67%. The loss variation ranged from +6% to -4%.

    The 2014 maximum was 15.52 MKm2, 1% less than 2013, and 2% less than the seven-year average.

    What can we expect for the 2014 minimum?

    Average: 5.05 MKm2
    If the loss is the same as the seven-year average, the minimum for 2014 can be estimated to be 5.05 MKm2, which is 2% less than the 2013 minimum of 5.51 MKm2.

    Low: 4.05 Mkm2
    On the other hand, if the loss is as great as in 2012 (the record recent minimum, 2014 could go as low as 4.05 Mkm2.

    High: 5.70 MKm2
    If the melt is as small as 2009, the 2014 minimum could be as high as 5.70 MKm2.

    If the 2014 NH ice extent minimum is outside this range, then maybe the climate is changing.


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