Sea Ice Extent (Global Antarctic and Arctic) – Day 123- 2017

Arctic is higher than 2016, 2006, 2015 and 2004 for this day 123.


South / North


4 thoughts on “Sea Ice Extent (Global Antarctic and Arctic) – Day 123- 2017

  1. Is it reasonable to theorize that in recent years, with the flattening of peak Arctic extents, that wind patterns are more representative of compaction/expansion of the sea ice extent than actual temperatures?

    If so, why isn’t more being done to study how wind patterns influenced historical extents 1979-1990?

    1. The AMO and wind patterns would be interesting. The satellite era is only barely half way through one AMO cycle.

      “During the positive phase of the AMO as from 1995 to present, there are more hurricanes than during the negative phase as from 1960 to 1995. Because when AMO is in positive phase then the ocean circulation is faster, the westerlies (the west wind in the mid-latitude) are shifted to the north and the trade winds more warm up more the ocean which is favorable for the formation of hurricanes. While during the negative phase the thermohaline circulation is lower, the westerly winds are curved farther to the south. This causes a vertical wind shear which reduces the number of tropical hurricanes in the North Atlantic.”

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