Saturday, September 24, 2016

Dense pack keeps on dispersing with leads widening in very warm temperatures.

     Displacement of densest pack ice (83.5 N 111 W)  has accelerated!   From 3 to 4.4 nautical miles Northwards a day.  Expansion between the leads has almost increased universally as well.   Long going, de-coiling momentum synergistically combined with the winds on top of warming temperatures and ever so present non amenable to freezing sea water.  It would be a mistake to infer that extent has increased because of greater coverage of sea ice.  Surface temperatures are -1 to -2 C,  again this event calls for better analysis tools.  The correct interpretation is that there is more open water per grid,  thus less sea ice.

More towards Wrangel Island Russia,  where there is a substantial presence of water the velocity is 6 nautical miles a day towards open water:

   A strongly frozen pack ice can hardly move more than 2 nautical miles a day unless there is a very good reason otherwise,  a blizzard with very strong winds or a sudden gash of open water caused by huge pressure variations.  What we see here is a strong expansion by dispersion,  the gaps between the packs is equally expansive.  The first 3 days Westward displacement of 6 nautical miles a day met with a wind direction change on the 4th day,  these de-coiling expansions are one of a kind,  likely to be common over next subsequent autumns.  WD  Sep 24-25 2016


 WD September 24,2016

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