Climate Matters: Weather Systems Stalling

“It seems like the weather, increasingly, is getting stuck.” Meteorologist Paul Douglas explains this weather pattern that seems to be stuck in a rut. Swells, drought and a polar vortex! Learn how it is impacting everywhere from Hawaii/Alaska all the way to Europe. The Winter Olympics may feel more like the Summer Olympics!

Thawing Permafrost Could Release Vast Carbon Deposits, Diseases

by Science World Report | January 8, 2014 | Release URL Dr Guido Grosse has been studying the Arctic for fourteen years to find out how the frozen ground, known as the permafrost, is reacting to an environment that is getting hotter all the time. The samples he has drilled out – in regions so…

White House: The Polar Vortex Explained in 2 Minutes

by Becky Fried | January 08, 2014  | Release URL Here at the White House, while we’re beginning to thaw from this week’s bone-chilling deep freeze, our discussions about the science of weather extremes are heating up. We know that no single weather episode proves or disproves climate change. Climate refers to the patterns observed in the weather…

Yale: Climate, Jetstream and Polar Vortex

Blanket 24/7 media coverage of the short but frigid ‘Polar Vortex’ temperatures — climate change? global warming? — provides a cornucopia of material for this month’s ‘This is Not Cool’ video.

The Science of the Polar Vortex and Jet Stream

At least since around 2001 we have study papers connecting the polar vortex / jet stream behavior to anomalies, such as cold weather outbreaks or precipitation changes. The polar vortex phenomenon was described as early as 1853. In recent years studies linked changes in the cryosphere to the polar vortex. Feel free to suggest further study papers in the comments.…

Estimating northern polar CH4 flux

A compilation of related science with some commentary. Microbes in thawing permafrost: the unknown variable in the climate change equation David E Graham, Matthew D Wallenstein, Tatiana A Vishnivetskaya, Mark P Waldrop,Tommy J Phelps, Susan M Pfiffner, Tullis C Onstott, Lyle G Whyte, Elizaveta M Rivkina,David A Gilichinsky, Dwayne A Elias, Rachel Mackelprang, Nathan C…

Does Freshwater Runoff in the Arctic change Ocean Circulation to Unlock Methane Hydrate in the Deep Ocean?

Recently freshwater intake into the Arctic Circle have changed ocean currents, in the following a collection of related science, and what if freshwater currents drive warmer water into the deep ocean and unlock methane hydrates? Mechanism have been identified recently. Arctic freshwater input into the North Pacific could serve as a catalyst for methane hydrate…

Does Sea Ice loss create the condition for an emerging permanent El Nino state?

Recently Doug asked: “…my question is, how far could this phenomenon go? What is the “end” state? Is it possible for example that we could find the jet stream staying in place for months at a time, years, decades? How wavy could this waviness become?” A main theme of Sea ice loss seems to be…

Exceptional 2012 Greenland Ice Melt Caused By Jet Stream Changes That May Be Driven By Global Warming

By Joe Romm / Climate Progress: New research finds that “unusual changes in atmospheric jet stream circulation caused the exceptional surface melt of the Greenland Ice Sheet (GrIS) in summer 2012.” Prof. Jennifer Francis tells me these changes are consistent with those caused by warming-driven “Arctic Amplification.” And that means GrIS may melt faster than…

Cyclone Activity Has Been Intensified in the Arctic

Cyclones are key weather elements that make a major contribution to climate trends and variability, and that also bring intense high-frequency changes in wind, temperature and precipitation. Given the recent dramatic change of the Arctic climate, Arctic cyclone activity has attracted an increasing amount of attention. We investigated the Arctic cyclone activity in the context…

Arctic Amplification and Extreme Weather

The “Arctic Paradox” was coined during recent winters when speculations arose that the dramatic changes in the Arctic may be linked to severe snowstorms and cold temperatures in mid-latitudes, particularly along the U.S. east coast and in Europe. Recent studies have illuminated these linkages. Evidence is presented for a physical mechanism connecting Arctic Amplification —…

Lesson: Arctic Sea Ice Decline

Jennifer Francis, Rutgers University – assesses the broad topic of the Arctic Sea Ice Decline and explains seasonal impacts. Observations, especially since the 1950’s, explain how the “Arctic Amplification” leads to rapid sea ice changes during the summer month. Much more ridging in North America during the winter. And this affects weather patterns, because a…

The N Hemisphere’s Atmospheric Circulation Has Collapsed Creating a Persistent Polar Cyclone

By FishOutOfWater / DailyKos: 500mb heights Normal for May 21 to June 6; 1980-2010 Average 500mb heights for May 21 to June 6 2013 A sudden stratospheric warming split the polar vortex in two in mid-January. Since then, the northern hemisphere’s atmospheric circulation has been behaving very strangely. An area of extreme high pressure formed…

Arctic Ocean ‘acidifying rapidly’

BBC: The Arctic seas are being made rapidly more acidic by carbon-dioxide emissions, according to a new report. Scientists from the Arctic Monitoring and Assessment Programme (AMAP) monitored widespread changes in ocean chemistry in the region. They say even if CO2 emissions stopped now, it would take tens of thousands of years for Arctic Ocean chemistry to…