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Warming Up to Scott:
A First Glance at Controls on Glaciers
Richard B. Alley http://geosociety.wordpress.com/2013/01/02/warming-up-to-scott-a-first-glance-at-controls-on-glaciers/
Looking for winter weirdness 5
From WattsUpWithThat (via Pierre Gosselin and Marc Morano): Increased evaporation combined with more heat loss in the Arctic due to a record low amount of Arctic sea ice is the likely cause. The likely cause of this: This graph is made and updated by the Rutgers University Global Snow Lab. Th...
Climateforce is now following Neven
Jan 7, 2013
Hi Aaron, i added your quote from above to this post http://climatestate.com/item/tipping-points-in-earth-climate-system-2012-arctic-methane-special-2.html
"Readings yesterday were as high as 2147 PPBv." Can you put this in more perspective, thanks.
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
James Hansen and Makiko Sato: Update of Greenland Ice Sheet Mass Loss: Exponential? 26 December 2012 http://www.columbia.edu/~jeh1/mailings/2012/20121226_GreenlandIceSheetUpdate.pdf
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
OK, thanks Steve, will consider this next time. Though i will be more carefully with what resources i use. However, the science here (Jet Stream anomaly, Arctic Dipole, Arctic Paradox, Arctic amplification, Winter weirding) is still evolving. It is not always easy to spot errors.
Another example here is the topic on current methane trends, updates on the main focus month, really very very little reporting at all. So i would love to use other sources. But so far little reporting in the "mainstream" scene :)
Cheers, prokaryotes from http://climatestate.com
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
Steve Bloom, that is not my article and i also post stuff, to get a response like yours, to better adjust my understanding. Thanks for pointing this out, though it would be great if you could provide some study or link, which in this case describes these extreme swings. Is this a regional special, because for instance of ortographic features?
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
Video: Tipping Points in Earth Climate System – 2012 Arctic Methane Special http://climatestate.com/item/tipping-points-in-earth-climate-system-2012-arctic-methane-special-2.html
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
Southern Germany records warmest Christmas Eve ever http://www.dw.de/southern-germany-records-warmest-christmas-eve-ever/a-16477867
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
This is the link http://glacierchange.wordpress.com/
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
Neven the link does not work (Glacier Change).
btw. I raise you my glass half full of wine :)
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
Arctic Amplification and anthropogenic climate change - high latitudes warming more than mid-latitudes, especially in fall and winter, but also during summer over land -> poleward thickness gradient weackening. This creates weaker upper-level, zonal mean flow, reduced phase speed. Peaks of upper-level ridges elongate northward, wave amplitude increases.
And Rossby waves (North to south winds) progress more slowly. Weather conditions become more persistent. Increased probability of extremes: cold spells, heat waves, flooding, prolonged snowfall, and drought. http://climatestate.com/pure-climate-science/item/lesson-arctic-sea-ice-decline.html
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
Polar jet stream appears hugely deformed
World climate zones used to be kept well apart by jet streams. On the northern hemisphere, the polar jet stream was working hard to separate the Tundra and Boreal climate zones' colder air in the north from the Temperate climate and the Subtropical climate zones' warmer air in the south.
The greater the difference in temperature between north and south, the faster the jet streams spin around the globe, the polar jet stream at about 60°N and the subtropical jet stream at about 30°N, as illustrated on above image.
The polar jet stream used to move at speeds of up to 140 miles per hour, while following a relatively straight track that was meandering only slightly, i.e. with waves that go up and down only a little bit.
Accordingly, the Northern Temperate Zone used to experience only mild differences between summer and winter weather, rather than the extreme hot or cold temperatures that we've experienced recently.
Accelerated warming in the Arctic is decreasing the difference in temperature between the Arctic and the Northern Temperate Zone. This is causing the polar jet to slow down and become more wavy, i.e. with larger loops, as illustrated by the image below.
This is a feedback of accelerated warming in the Arctic that reinforces itself. As the jet stream slows down and its waves become elongated, cold air can leave the Arctic more easily and come down deep into the Northern Temperate Zone. Conversily, more warm air can at the same time move north into the Arctic. The 'open doors' further decrease the difference in temperature between the Arctic and the Northern Temperate Zone, in turn further slowing down the jet stream and making it more wavy, and thus further accelerating warming in the Arctic. http://arctic-news.blogspot.de/2012/12/polar-jet-stream-appears-hugely-deformed.html
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
Reblogged your post here http://climatestate.com/item/looking-for-winter-weirdness.html
Germany had unprecedented warm temps the last days reaching top 18-20,7C, breaking many records, floods and high winds too.
Though i have to note, most articles in the media just mention the historic cold temps, but do not bother to shine light on the circumstances and the science.
Cheers, prokaryotes
Looking for winter weirdness 3
It's been a while since we had a first couple of signs of winter weirdness, back in October, when superstorm Sandy took a 90 degree left turn due to a ridge of blocking highs along southern Greenland, and some cold air spilled from the central Arctic over Europe, bringing very early snow to the ...
Lesson: Arctic Sea Ice Decline http://climatestate.com/pure-climate-science/item/lesson-arctic-sea-ice-decline.html
The big picture..
Record dominoes 1: Uni Bremen sea ice extent
There are several scientific organisations that keep an eye on the Arctic sea ice cover and put out graphs to inform us of the amount of ice that is left. You can see most, if not all, of them on the ASI Graphs webpage. --- I expect the record on most of these graphs to be broken in weeks to com...
Re Fig.1: Uhm, wouldn't it make sense to put the actual year number not "Current year"?
PIOMAS June 2011
The PIOMAS graphs at the Polar Science Center of the Applied Physics Laboratory at the University of Washington have been updated. Here is the current modeled volume: And the volume anomaly: Another steep drop. As per the PSC/APL website: Monthly averaged ice volume for June 2011 was 15,700...
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Jul 9, 2011
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