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Climateforce
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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/
Toggle Commented Jan 7, 2013 on Looking for winter weirdness 5 at Arctic Sea Ice
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.
Toggle Commented Dec 28, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
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
Toggle Commented Dec 28, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
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
Toggle Commented Dec 28, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
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?
Toggle Commented Dec 28, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
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
Toggle Commented Dec 26, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
Southern Germany records warmest Christmas Eve ever http://www.dw.de/southern-germany-records-warmest-christmas-eve-ever/a-16477867
Toggle Commented Dec 26, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
This is the link http://glacierchange.wordpress.com/
Toggle Commented Dec 25, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
Neven the link does not work (Glacier Change). btw. I raise you my glass half full of wine :)
Toggle Commented Dec 25, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
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
Toggle Commented Dec 25, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
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
Toggle Commented Dec 25, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
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
Toggle Commented Dec 25, 2012 on Looking for winter weirdness 3 at Arctic Sea Ice
Lesson: Arctic Sea Ice Decline http://climatestate.com/pure-climate-science/item/lesson-arctic-sea-ice-decline.html The big picture..
Re Fig.1: Uhm, wouldn't it make sense to put the actual year number not "Current year"?
Toggle Commented Jul 9, 2011 on PIOMAS June 2011 at Arctic Sea Ice
Climateforce is now following The Typepad Team
Jul 9, 2011