This also includes Patterns in weather, such as El Niño.
http://www.skepticalscience.com/news.php?n=1967
As the simple diagrams show, the temperature-gradient between the Arctic and the warmer latitudes has lessened. The strength of the jet stream is influenced by the size of the temperature gradient.
Pre Industrial
Now
Wind speed is solid line, Ice area dashed, in million sq km.
Kelvin Wave Is Raising Sea Level along US West Coast 1026.rtf
Evidence Builds that Climate Change Could Be Intensifying El Niño Events 0926.rtf
El Niño - a Deadly 'Postcard from the Future' 0926.rtf
Huge El Niño Projected to Cause 450,000 Deaths in Next 6 Months 0926.rtf
How Climate Change Reshapes Winter 0126.rtfLightning Strikes Increase in the Arctic - What Will It Mean for the Far North? 0625.rtfPlanetary Waves Linked to Wild Summer Weather Have Tripled since 1950 - 0625.rtfThe Arctic Is in Trouble. The Consequences Will Be Felt around the World. 0325.rtfWhy More Frequent Cold Blasts Could Be Coming from Global Warming 0125.rtfArctic Warming Linked to Severe Cold Spells across Northern Hemisphere 1224.rtfAtmospheric Rivers Are Shifting Poleward 1024.rtfClimate System Chaos, e.g. Worse Floods, as Polar Jet Stream Meanders More 0924.rtfExtreme Cold Snaps Could Worsen as Climate Change Shifts Polar Vortex 0124.rtfJet Stream Will Get Faster as Climate Change Continues 1223.rtf - This disagrees with other studies, at least what has been observed so far.Scientists Found the Most Intense Heat Wave Ever Recorded — in Antarctica 0923.rtfWith Our Food Systems on Verge of Collapse, It’s the Plutocrats v Life on Earth 0723.rtf‘Virtually Certain’ Extreme Antarctic Events Will Get Worse without Drastic Action 0823.rtf - Some of them will affect the south polar jet stream, in somewhat similar ways to the north polar jet stream. Problem for crop yields in southern South America, and -somewhat less so - in Australia and New Zealand, south Africa, and temperate South America.Scorching Heat and Canada Wildfires Could Be Tied to ‘Wavy, Blocky’ Jet Stream 0623.rtfSection Map: Weather & Sea Level Rise