Transition Brockville archive

Tag : Jet stream (4)

New study links carbon pollution to extreme weather

The Guardian / John Abraham / 07 April 2017

It was only a few weeks ago that I wrote about changes to extreme weather in a warming world. That prior article dealt with the increase of extreme precipitation events as the Earth warms. I termed the relationship a thermodynamic one; it was driven by local thermodynamic processes. But extreme weather can also occur because of large-scale changes to the atmosphere and oceans. This issue is the topic of another just-published paper that makes a convincing case for a whole new type of influence of humans on extreme weather. In a certain sense, this study confirms what was previously reported here and here. With the march of science, the tools, methods, and evidence get better each year.

[ FULL ARTICLE ]  [ TB: This emerging discussion was mentioned by TB in its presentation to the Brockville & District Chamber of Commerce at its Green Summit back in 2013. ]

Warning of ‘global climate emergency’ over jet stream shift

The Independent / Gabriel Samuels / 30 June 2016

jet-streamEnvironmental scientists have declared a “global climate emergency” after the Northern hemisphere jet stream was found to have crossed the equator, bringing “unprecedented” changes to the world’s weather patterns.

Robert Scribbler and University of Ottawa researcher Paul Beckwith warned of the “weather-destabilising and extreme weather-generating” consequences of the jet stream shift.

The scientists said the anomalies were most likely precipitated by man-made climate change, which caused the jet stream to slow down and create larger waves.

Scribbler wrote in a post on his environmental blog on Tuesday: “It’s the very picture of weather-weirding due to climate change. Something that would absolutely not happen in a normal world. Something, that if it continues, basically threatens seasonal integrity.”

[ FULL ARTICLE ]

A melting Arctic and weird weather: the plot thickens

The Conversation / Jennifer Francis / 18 February 2015

eastern NAEveryone loves to talk about the weather, and this winter Mother Nature has served up a feast to chew on. Few parts of the US have been spared her wrath.

Severe drought and abnormally warm conditions continue in the west, with the first-ever rain-free January in San Francisco; bitter cold hangs tough over the upper Midwest and Northeast; and New England is being buried by a seemingly endless string of snowy nor’easters.

Yes, droughts, cold and snowstorms have happened before, but the persistence of this pattern over North America is starting to raise eyebrows. Is climate change at work here?

[ FULL ARTICLE ]

When it comes to weather losses, persistence is the problem

Risk Market News / 04 March 2015

Changes in the pattern of the jet stream are halting severe weather patterns for days, or even weeks, and increasing the likelihood that large loss events will occur, according to a report released by Munich Re on Tuesday.

Intense flood events, longer crop-destroying droughts and more destructive winter storms are the most likely outcome as severe weather systems stall over regions rather than being quickly moved out by an ever weakening jet stream, the German reinsurance firm says.

“[The pattern] is reducing the differences in temperature and pressure between high latitudes and mid-latitudes, with the result that more frequent quasi-stationary weather patterns occur, “the report published by Munich Re’s Topic GEO said. “Under such conditions, heat or drought and rain can assume extreme forms.”

[ FULL ARTICLE ]

page 1 of 1

The Transition Framework

Transition initiatives share many of the same goals as other groups, and work collaboratively with a variety of organizations in their local areas. Transition differs in that it focuses specifically on preparing communities for the changes associated with unprecedented resource depletion and transitioning away from fossil-fuel dependency.

— Transition U.S.
TB Projects

Subscribe to our Blog

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Subscribe to our Newsletter
Subscribe to our monthly newsletter for local, provincial and national news highlights along with Big Picture articles, tips on what you can do, and an area events calendar.

Biodiversity of the 1000 Islands
Follow Us on Facebook