Weather--->Tornadoes, hurricanes and extratropical cyclones.
Climate--->Avg temperature or means placement of jet stream(can also mean placement of those weather patterns).
A more ice free arctic caused by a
warming climate can shift the jet stream and cause a different weather pattern then occurred 200 years ago.
Most of this years inactivity in tornadoes were caused by the jet stream being further eastward. This didn't allow moisture from the gulf to spawn the twisters.
I'm NOT saying this is climate...Just interesting how it played out this year.

On the other hand the longer term pattern of WEATHER can be charged to differ by the change in climate.
Do you agree?
Almost.. Certainly to make the climate change argument -- you have to show evidence of increase strength and likelihood of violent weather. That's my bottom line. So -- what does 1deg mean to a cumulo-nimbus? Tornadoes require at LEAST 5 neccessary conditions that either of us could reel off --- there are probably more. I don't think that 1 deg of temperature creates tornadoes more often. The most likely formation of tornadoes doesn't come from organized weather fronts, but from isolated super cells. These are pretty independent of "average surface temp" in their formation because they require a temp. DIFFERENCE more than just a degree surface boost.
((I can however see increased activity of organized weather fronts because they feed on a wide area of humidity and surface warmth.))
Pretty similiar line of reasoning for hurricane strength and formation.. If that 1deg surface boost had an effect --- we would see it during AMO, PDO periods. Although there is SOME relationship to those natural temp. cycles, it's really NOT definitive.
If the relationship is NOT predictive for AMO and PDO --- what makes anyone think that a 0.5degC boost in sea surface temp. is a SUFFICIENT condition to make claims about violence increasing?
I don't do ice.. Pure and simple. And I know that's heartless. But glaciers were doomed 200 yrs ago.. And I'm not amazed that when temps get above freezing in the summer, all of sudden the ice starts to melt. It's a threshold being breached, not a warning from the gods.
Just can't get all jazzed about ice like I could about all the OTHER purported castastrophic weather changes that have been proposed..
The implication given for Climate Change is that temp is a SUFFICIENT condition for all these imagined changes. SURELY the energy in the system increases. But so does dam near every variable. Right now --- increased winds from N. Africa are snuffing out Atl. hurricanes like a 5 yr old birthday boy. And belching clouds of dry particulates all the way to the Caribbean..
It's a lot more complicated than the poly sci / media driven / politically correct vision....