~Extreme warning of North Atlantic and Pacific part of, or cause of , or part & cause of worldwide major climate shifts.
~Extreme warning of North Atlantic and Pacific part of, or cause of , or part & cause of worldwide major climate shifts.
~At any given day of the year the CTNP is the prime circulation mover
~Where all weather systems spins around it
~When it is weak, hardly anything moves
~This highlights the importance of Arctic sea ice, the world would be dramatically different without it.
Look carefully at GOES 16 IR system movements, over Cuba and Gulf of Mexico the weather seems steady for a period of 2 days, however over Hudson Bay the weather systems move a little more consistently Eastwards. The further away from the CTNP the slower the circulation, therefore this weather, as forecasted beginning of May here on EH2r, has come through as expected.~As the pressure switchover looms, the Polar Vortex fades in grandeur
~But as such many Rogue Vortices are created
~One May 31 Rogue gave some special effects
~Sometimes AI gets it right
~EH2r projection just made in previous article really close to NOAA model even the Alaska bit
~Amazing unusual past winter observations, from beginning to end
~Wild variances in Arctic climate was the main feature
~LaNina so mild not important as much as ENSO trending warm or cold
~Unfamiliar sudden changes in Arctic weather patterns are rapidly becoming the norm
The objective of this exercise is to see how much I understand weather dynamics in relation to geophysical observations lasting throughout the High Arctic autumn, the long night and spring. If I understand what happened well, I might have a very good idea what will become later.
Prognosis
A rapid prognosis of past autumn and winter is essential, strangely ENSO pattern appears regular since summer 2020:
~All the latest exciting discoveries were encapsulated in the first 2 weeks of April 2022
~ As the Northern Hemisphere warmed, the Polar Vortex shrunk with extending outwards waves, while the CTNP gradually returned to central Canadian Arctic Archipelago (CAA), making it deeply colder compared to 2 weeks prior.
~Vertical sun disks shrank accordingly, but also had some expanded sun disks, meaning Cold Temperature North Poles have very small horizontal extents.
~Absolutely astounding reversal of tropopause heights were noticed as well, the tropopause at CTNP center can be as low as 5 km.
~Winter may be officially over, but it said final goodbye in NE USA on March 28
~It was a Rogue Vortice, very cold Cold Temperature North Pole cut off from the Polar Vortex
~Expect more of these more often for many winters to come
The geometry of winter has changed, it has become thinner, not bloated by darkness as it use to be. In effect, winter still rages but for smaller areas, when so
the vastly larger stable warmer air deepens the Cold Temperature North Pole(s), not often at the North Pole, but wherever it may be. Sometimes very surprisingly, like a few days ago as on March 28 over Michigan USA, suffering again a cold blitz, something special makes it there, perhaps it’s the location tip of the elongated end of the Polar Vortex, stretched out with favorable cooling weather twinned with some cold air advection. At any rate, being in late March, such a low latitude CTNP has no chance of living long, as it did so.
However the geometry is of interest:
~Especially away from the Cold Temperature North Pole
~Presently in the extreme Northern Arctic lands of Ellesmere and North Siberia
It took a while , more extensive cloud cover slowed data acquisition, but today help gathered more than 50 sun disk measurements having a remarkable 20% result of vertical sun disks being above all time highest decimal averages. 5% is considered normal random result, indicating no warming or cooling of the atmosphere. 20% is 4 times above normal. Not seen like this since 2010 and 2016. Turns out there is a warming, particularly over the Arctic Ocean, not coming as a surprise given the thinner sea ice:
https://www.theguardian.com/environment/2022/mar/21/extremes-of-40c-above-normal-whats-causing-extraordinary-heating-in-polar-regions
Indeed , all time high temps coincide with increasing clouds and the perpetuation of North Atlantic and Pacific moisture well above the Arctic circle, this evenings CMC 700 mb chart shows where the heat was found to be, not only today but for about the last 2 weeks.
In yellow is the area where sun disks were measured. There was a significant CTNP off West central Greenland a few days ago, now the CTNP hovers above Ellesmere Island. The CTNP was much further South preceding West Greenland, it had no staying power because of proximity to the North Atlantic, CTNP migrated from Northern Quebec to West Greenland and finally central Ellesmere in about 8 days., all while flowing air from the Arctic Ocean basin southwards West of 90W degrees longitude. In the not so distant past, this would have meant a significant deep freeze in the same area in yellow. Vertical sun disks are far more sensitive to the temperature of the entire atmosphere, than at any particular altitude. At recent vernal equinoxes particularly 2018, 2019 and 20, the CTNP was situated above the central Canadian Arctic Archipelago, strongly shrinking vertical sun disks, 2022 equinox scene is different, more like 2017 and preceding years, when sun disks were much expanded and representing the whole Arctic. Measuring sun disks from center of CTNP gave a peculiar distorted view representing a stable center of extreme cold clear sky weather which was unique compared to past 17 years. Colder air, albeit smaller in extent, can subsist even when warming is almost overwhelming at every locations.