Reduction of UV as an average is linked to weaker solar cycles, right? So we should be expecting this trend to continue upon next 20 years? That´s when warmer humid tropical air masses drive further north getting closer to the pole, and viceversa: dry very cold air masses invade either Eurasia or North America or Pacific or North Atlantic etc severe rainfalls or droughts and calid and cold spells... record snow and record melting... severe storms getting into Artic more oftenly... possible low extend records or below average to persist at first phase of cooling?
Yes as the jetstream becomes more meridonal with larger Rossby waves then the equatorward loops carry cold air toward the equator and the polarward loops carry warm air toward the poles. This increases cloudiness as the weather in the Ferrel cells has a longer track (looping not a simple circle) so the albedo of the Earth increases reducing surface heating. The weather this causes allows for cherry picking - as those who want to say it is getting warmer pick the weather inside the warm loops pushing toward the pole (USA midwest or Australian desert) and those wanting to report cold weather report the equatorward loops.
All standard misrepresentation.
Then we have a Sudden Stratospheric Warming as one of the Rossby waves in the pole bound loop close to the pole breaks up through the low tropopause into the stratosphere and the whole merry-go-round breaks into swirls and eddies with the circulation being forced back on itself dragging cold polar air down into the temperate latitudes. Madrid is about to get caught by a cold swirl as is the US East Coast.
Yes indeed, we´ll be getting colder now, but worst and colder weather again through UK, one cold Low after another, making its way through France-Germany-Central Europe to the western Mediterranean... and when such thing happened in the past Med western cold Low from Artic can get deeper, stick around between Italy and Spain and we might get some North-easterly cold and humid air: some little snow in Madrid (don´t think mightl happen before Jan 16th though) Bet myself to prove it being right ;D
Polar Jet Stream is now further south and shall affect Iberian Peninsula weather for a while. UK is off Jet Stream and shall be getting increasing cold once passed this snow warning event. Nautonnier´s Rosby Waves bringing us in western Europe back to winter. :-;
My cousin in Florida posted this morning......who turned on the A/C.
Absolutely, the temperature in Central Florida has plunged to 60F - they will be issuing warnings to dress the children properly for the wait for the school bus.
From Central Florida News Weather ...
"Temperatures took a big drop in the overnight as a cold front moved to our east and high pressure pumped cool air in to the region. If your heading out in the morning hours, and extra layer of clothing could come in handy as winds come in from the north-northeast at 10 to 15 mph and will only increase as we move through the day,"
Are we seeing a solar/UV influenced meridional circulation pattern in the Southern Hemisphere? This week’s very unusual July snow in Southern Brazil got me wondering about the strength and pattern of the SH Jet Stream.
Are we seeing a solar/UV influenced meridional circulation pattern in the Southern Hemisphere? This week’s very unusual July snow in Southern Brazil got me wondering about the strength and pattern of the SH Jet Stream. . .
It can’t be a melting Antarctic that’s influencing it: . . .
Not every theory works. . .
Last January researchers at Penn State concluded that Ozone trumps CO2 when it comes to the jet stream.
In addition to finding that ozone is more important than greenhouse gases in influencing the jet-stream shift, the scientists also found evidence for a mechanism by which greenhouse gases influence the jet-stream shift. They learned that greenhouse gases may not directly influence the jet-stream shift, but rather may indirectly influence the shift by changing tropical convection or the vertical transfer of heat in large-scale cloud systems, which in turn, influences the jet shift. The researchers currently are further examining this and other possible mechanisms for how greenhouse gases and ozone influence the jet stream as well as Antarctic sea ice.
With respect to the CO2issue, my read is that they really don't know, which is a common theme in AGW research.
"But wait" I asked myself when I first read the article. "Didn't we solve the Ozone problem with the much touted Montreal Protocols, and the very expensive conversion of every AC unit in the US (and the world) to eco-friendly 1,1,1,2 Tetraflouroethane (aka R134a in your automotive AC)?"
We'll to my shock this very expensive government mandate didn't really work and the Ozone hole continued to grow.
Now, does anybody wonder why I'm a little skeptical about the government's rush to judgement on the CO2 regulatory agendas?