2nd day GAC, North Pole situation looks more open than ever

~Sea ice rotation "to the right" of winds,  does not show up so well,  scattering seems more isobaric
~ Melt rates vary in steps associated with Low pressure movement.

CMC GAC yesterday august 16 at 18 UTC

CMC August 17 18 UTC surface analysis.  981 mb situated 82N 150E not moving Southwards anymore from this time ,  at 00 UTC the centre was 82N 155E, 983 mb.  This means that a new batch of sea ice was broken up further and or at different locations since yesterday.  Note the isobars,  and look at the rotation of the entire sea ice pack carefully:

JAXA   Map Clearly shows very little outward dispersions,  but very much sea ice movement following  Isobaric lines more closely.  The centre of the Cyclone stayed long enough at 86N to cause extensive water zone not readily filling up with scattered ice. You can even notice the isobaric lines etched in sea ice just South of the Pole towards Alaska and Bering Strait.   The new Low pressure centre has dragged a new batch of sea ice along the  Ostrov Komsomolets Eastern ice bridge shore to cover open water, this accounts for a reduction in  extent daily drop to 73,373 km2 (3rd greatest melt for aug 17 since 2002).  Note the great scattering of sea ice along Wrangel Island 'pan handle' Eastern shores,  surely will give great extent drops in the coming days.  The rotation of the entire pack also affects the Atlantic sea ice front,  bringing sea ice a top exposed open water.    Finally if the Trans Polar Stream has a chance to resume,  there will be a lot of open water at the North Pole come this minima. WD August 18,2016

1st GAC summer 2016 preliminary effects

~  Following scattering slow down,  today's extent drop is the largest in August 16 history (2002-2016)  109,341 km2.
~  Rotation of entire sea ice pack appears to be counterclockwise.
~  Low pressure centre still not at the Pole, most of yesterdays sea lakes vanished by strong winds.
~ Cyclone centre expanded near adjoining sea water areas.

       The Cyclone Centre was about 85N 180W Longitude all day,   it expanded the open water there quite dramatically,  and this is not finished expanding:

      Most August 15 great lakes creations by smaller Low were "closed"  by wind movement away from the centre of the new Cyclone.  However there is far larger opening at 85 N than the day prior.


     The Cyclone seems to have affected the entire remaining sea ice pack:

     The Pack From Fram Strait to Banks Island Canada seems rotating counter clockwise.

     The rotation was also captured by AMSR2:

               The counterclockwise rotation of the entire pack has doomed the Wrangel Island sea ice panhandle much quicker, warmer sea water is about to seriously invade the Laptev sea region as well.
   Wherever the cyclone centre will remain steady,  there will be wider open water,  ECMWF seems to place this cyclone away from North Pole towards East Siberian Sea.   So it seems the  Pole area was spared,  for now,  from even more greater open water as never seen before.  WD August17,2016

Expanding North Pole Sea lakes, from a smaller Low prior to amalgamation with GAC 2016

     The expansion of open sea water at the North Pole has started by the older Low which deepened just before it merged prior to 18 utc with the GAC of summer 2016.  This expansion was expected,  but not quite like captured by AMSR2.

CMC Monday 15 00z Surface analysis of QS Quasi Stationary Low just South of the Pole 

The smaller Low 984 mb did a lot of expansion,  leaves to the imagination what the bigger one will do.    The proximity of the Pole has never had so much open water. wd August 15,2016 

Great movement Eastward by latest GAC and predecessors

   A small opening displaying Wrangel island ice bridge has been shrinking and compressing,  even
Goodbye Waves are interestingly bunched up against the ice edge,  either by recent past cyclones and in particular the latest one currently shaping up the icescape further.WDAug15,2016

Sea ice moved away from latest major Low pressure Centre

Latest  880 mb Cyclone was right over Laptev sea yesterday.  This is not a see through cyclone,  rather moderate to strong, we can only see its after effects once passed.  For better understanding of over sea ice floes interactions we must look at just prior sea ice movements.   

East of Franz Joseph Lands,  Sea Ice was mainly moving South.

    Notice near Ostrov Komsomolets likely Southwards moving ice but melting,  leaving a stable but badly shattered ice front with Goodbye Waves.

   In the wake of passage of new 980 mb cyclone centre, East of Ostrov Komsomolets reversal of flow direction , note the reduction in Goodbye Waves numbers and Northwards sea ice displacement.   August 15 winds are blowing  Southeastwards,  the main body of ice did not move in that direction,  but rather away from Low pressure centre. wdAugust15,2016

Sliding Sea Ice; Recent sea water lakes near the North Pole made bigger by small Cyclone

~Preceding a mega lake at the Pole coming in a few days


   If Atmospheric pressure drops substantially,  sea level rises by not much,  up to 63 cm ,  but that should be enough to make even sea ice to slide downwards (tidal timing may make the sliding a bit interesting).  Gravity rules us all,  big and small, all things conform,  a recent small 988 mb Low now in the North Pole CAA-Greenland quadrant  is preceding a stronger one, but its effect on fragile looser sea ice left its imprint:

  This small see through 988 mb Low moving from East to West just South of the Pole (towards the Atlantic),  apparently innocent looking and minding its regular business, caused some damage to an already very fragile Central Arctic Basin unraveling, as I write,  sea ice:

August 11-12 AMSR2 Sequence enlarged and zoomed  show a disturbance in sea ice consolidation in a mere day,  especially enlargement of a sea water lakes (surrounded by sea ice).  This was done with a weak Low,  now we will see what a more than moderate 970 mb will do,  highly likely clearing the Pole as never seen before.  wdAugust13,2016

Scant near North Pole visuals; sea ice is badly broken up towards the Atlantic Front.

     For august 11,  we only have 2016,  2014 and 2013 with clear enough skies.  We know that 2016 is badly broken up on the North Atlantic quadrant of the Pole all the way to 88 North within the area of 00 Longitude  along the Trans Polar Stream.   2014 looked like solid consolidation in comparison. Much more broken with open sea water than  2013,  which always was an interesting year.    2016 has had great sea ice volume losses towards the Atlantic,  not necessarily showing well with the numbers. This area of sea ice has very serious implications with Central Arctic Basin consolidation,  if open water dilutes further this sea ice, it would mean more unstable situation leading for more massive losses or melting.   WDAug12,2016

Atlantic Front: substantial evidence of massive melting, 'goodbye' waves a plenty

All along the North Atlantic sea ice front,  about 1200 Kilometres long,  there are numerous new 'Goodbye' waves,  sure evidence of recent massive melting.  From Fram Strait,  to North of Spitsbergen to beyond Franz Josef lands,  as seen here in our roving NASA EOSDIS shots.  Although the newish extended sea ice front line position has recently expanded and appears  more or less stable, that is an illusion,  the sea ice melts just as fast as it touches warmer water.  The end result is a great loss of sea ice.  Assume Southwards sea ice movement a modest fluid 2 kilometres an hour ,  about 48 kilometres a day melt along apparently a steady front,  potentially 60,000 km2 a day loss is possible, without actual remote sensing detection. WDAugust10 2016.

Expansion and dilution at once, nature is playing games with our eyes

    While extent drops have recently been lesser,  the melt is just as strong:

Looking at JAXA results,  there has been an expansion of sea ice about 120,000 Km2,  on the North Atlantic front.  As reported here,   there is a great deal of daily melting along that front.  It can be readily identified by comparing when the front was quiet on July 26,  now look at Aug 9 map.  The entire front is battered by the melting (black broken ice zones),  but the flow continues Southwards, nevertheless  right into very warm sea water .   In the mean time,  the CAB is diluting more rapidly leading the way for further water expansion on the Pacific side of the North Pole, which is awfully close to wide open water areas.  Holistically speaking this melt is as bad as it got at this time of the season.  WD Aug7,2016

Atlantic front great movement, super melting trap

  It did not take long for the real Arctic Ocean currents to be re-energized by favourable weather circulation,  there is a mini dipole at the other end of sea ice,  the Trans Polar Stream and main GAC Gyre appear almost full force.  As a result the Atlantic front, seen here, is expanding right into a trap of warm sea water.  With respect to Extent numbers,  they may seem less due to this vast expansion,    but robust they will be in the long run. wdAug7,2016