The great Cold Temperature North Pole vortex of Western Canadian Arctic Archipelago.
We start at winter end, when contrary to present time most of the dark season Arctic was warmer and cloudy. Somehow the heat influence grasp of North Atlantic cyclones nearly constantly circumnavigating North Greenland from the East fell short of South of the 70th parallel, somehow the upper air got colder in an important sector of the Arctic, this cold air aggregate sprung out in force in March, it had multiple density layers causing amazing sunsets :
I have filmed a few Wegener blank strips over the years, this one was entirely complicated. This kiss of the mirror sun type, had amazing gravity waves in the lower frame, shown here ascending with the inverse lower sun disk limb. Up to 4 gravity waves mystically appeared bright adjoining the deep dark, blank zone, implying ducted light which got scattered out to extinction by the very long distance travelled, up to or in excess of 2000 kilometers.
Stacked Green flashes vanish as fast as they were created. Sunsets were for the most part shifted Northwards in March compared to previous 10 years, with one setting at -2.3 degrees below the horizon, a very rare recent 8 year occasion, much more common in 2002-2005 period, the last time this happened was once in 2014 and once in 2010 . April sunsets disappeared slightly Southwards than average. The near surface air in April was prominently adiabatic.
An apparent contradiction, this March 31 2018 sun disk vertical diameter is large, 24.90 arc minutes, at an altitude close to the horizon, 2018 horizon sun disks tended to be vertically thicker near the horizon, much diminished than average well above. This described the structure of the atmosphere, warmer very near the ground, much much colder in the upper atmosphere, in fact sun disk data was astounding:
What is the score?
Levels @ #1 Year Ranking
19 2016 First Place
14 2015 2
11 2006 3
9 2005 4
9 2009 4
9 2010 4
9 2011 4
9 2013 4
8 2012 5
5 2017 6
4 2004 7
4 2007 8
4 2008 9
4 2014 10
2 2002 11
1 2003 12
0 2018 ? 13 dead last
With more than 500 vertical sun disk measurements within 120 decimal levels, taken by high resolution telescope photos from -0.9 to 10.9 degrees astronomical elevations. Mostly with March and April data, February was cloudy. This 2018 '0' result is amazing, it implies a very cold Upper Atmosphere, in fact the coldest since the start of vertical sun disk measurements, mainly to the West of central Canadian Arctic Archipelago , a location not measured by soundings. Not one of 120 possible decimal elevation levels average sun disk diameters was all time highest. This forced me to look at the bottom of rankings vertical dimensions results for the first time ever, there is something peculiar about them, many occurred during La-Nina trending periods but mostly with neutral or neutral trending end of winters:
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