Record Temps in Arctic Circle, New Jet Stream research

July 9, 2016

arctictemp

Weather Network:

Wednesday, July 6, 2016, 12:19 PM – The heat is ON. Not only are parts of eastern Canada in the midst of potential heat wave new record high temperatures have been smashed in the north. Way north.

On Tuesday, Kugluktuk, Nunavut, which is located in the Arctic Circle, nearly cracked the 30 degree mark.

The area hit a high of 29.2°C, (84.5° F) smashing the previous record of 28.1°C (82.5° F) set back in 1994.

“Simply put, an area of high pressure and an unusually warm air mass is hovering over the region,” says Weather Network meteorologist Kelly Sonnenburg. “That combined with southerly winds is what helped to contribute to these record high temperatures.”

Although temperatures won’t be as hot for the rest of the week, they’ll still remain above seasonal.

“The seasonal average for this time of year in Kugluktuk is only 15°C, (59° F)” Sonnenburg says.

Satellite350

University of Sheffield:

Greenland is one of the fastest-warming regions of the world, according to climate change experts at the University of Sheffield.

New research, led by Professor Edward Hanna from the University’s Department of Geography, has identified changes in weather systems over Greenland that have dragged unusually warm air up over the western flank of Greenland’s Ice Sheet.

These weather systems are also linked to extreme weather patterns over northwest Europe, such as the unusually wet conditions in the UK in the summers of 2007 and 2012.

The study analysed changes in weather systems over Greenland since 1851, using a measure called the Greenland Blocking Index (GBI). The index measures the occurrence and strength of atmospheric high pressure systems, which tend to remain stationary when they occur, causing long runs of relatively stable and calm weather conditions. The high pressure also blocks storm systems from moving in on the region. The previous available version of the GBI only extended back to 1948.

Professor Hanna and his team have found an increase in the occurrence of atmospheric high pressure ‘blocking’ systems over Greenland since the 1980s throughout all seasons, which relates to a significantly strong warming of the Greenland and wider Arctic region compared with the rest of the world.

The Sheffield-led team also found an especially strong recent increase in the occurrence of Greenland ‘blocking’ weather systems in summer, which is linked to a more northward-meandering branch of the atmospheric jet stream. This has resulted in warmer air more often moving north into the region in recent years.

Professor Hanna said: “Our research has found an increase in the incidence of high pressure weather systems remaining stationary over Greenland since the 1980s, which is having a significant impact on extreme weather and climate change in the region.

“These weather systems are occurring in the area more often because of strong Arctic warming and changes in the atmospheric jet stream in recent years.

“This is resulting in an increase in the occurrence of warm air in the region and it is also affecting weather systems downstream of Greenland, such as over the UK. The unusually wet weather seen in the UK in the summers of 2007 and 2012, for instance, is linked to these stationary high pressure systems over Greenland.”

The research team, which also includes a climate scientist John Cappelen from the Danish Meteorological Institute in Copenhagen, Denmark, found that Greenland ‘blocking’ pressure systems have become much more variable from year to year in December in recent decades. This reflects an increasing destabilisation of atmospheric weather systems in late autumn and early winter, which the team believe may be related, at least in part, to dramatic declines in sea-ice coverage in the Arctic region.

“Sea-ice coverage throughout the Arctic has significantly reduced in recent years, which we already know is having an amplifying effect on warming in the region. What this study now tells us is that changes in stationary high pressure over Greenland are adding to the change in polar climate,” Professor Hanna added.

This research has more than doubled the timespan of data analysed on Greenland ‘blocking’ weather systems and is a useful measure of changes in North Atlantic atmospheric circulation. The results can enable an improved understanding of the links between mid-latitude and high-latitude climate change when combined with other climatological studies.

Findings from the research are published in the International Journal of Climatology on 27 April 2016.

 

 

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8 Responses to “Record Temps in Arctic Circle, New Jet Stream research”

  1. jaimesal Says:

    Some lack of differentiation is observed in the article between climate and weather.


  2. […] Record Temps in Arctic Circle, New Jet Stream research […]

  3. dumboldguy Says:

    It’s surprising that this post has drawn no comments, considering its implications for the future. I’ve said before that my personal canary-in-the-coal-mine is the Arctic, and the changes in the jet stream, rising temperatures, decline in sea ice, and melting of the Greenland ice sheet all point to a tipping point at some unknown future time. Can anyone say “beware runaway positive feedback mechanisms”?


  4. Is it really surprising? Very few 1st world humans are paying attention to what is going on here on Earth. Most 1st world humans are stumbling around in a anthropocentric narcissistic haze; dimly aware of anything past 5 inches in front of their face that isn’t projected on screen of some sort. Documenting their hyper consumptive lives on FaceTwigGram. As long as the Soma that is industrial civilization keeps flowing, it’ will be likely be as Huxley said “that second dose of Soma raised a quite impenetrable wall between the actual universe and their minds.”

    • dumboldguy Says:

      All very true and well said, but one would think that among the ~2370 “amazing people” (and a handful of cretins) that follow this blog, there would be one that might bestir himself to make a comment.

      Or are they like me, getting somewhat depressed at our lack of progress on AGW? And just waiting to see what this year brings in the Arctic? (to say nothing of watching with fascination the antics of the biggest clump of “narcissistic haze” ever to appear on the planet—-Donald Trump)


      • I don’t hold much hope for humans concern about what is happening. We are on a runaway train, and there ain’t no brakes. There is no progress to be made. What has been set in motion by human activities cannot be stopped slowed or reversed. The changes in the climate we’re bearing witness to will continue long after most humans and life on earth is no more. Our society of spectacle serve only to make matters worse and distract us from the grim reality.


  5. About not being able to see what’s at the end of your nose and how far folks can be distracted, father in law, ex suburban bank branch manager recently expressed interest in booking one of the low earth orbit trips. He’s a fatty so we suggested LEO trip was the only way he’d lose weight, ho, ho. Does planned obsolescence include human brains or is outlook demeaned, for whole world, by gospel according to Rupert?


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