Climate crisis may be increasing jet stream turbulence, study finds
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I'd just like to know why those flogging the global warming message (eg Al Gore, Leonardo DiCaprio) have no concern for their own carbon footprint, just had Al in Oz preaching the message and travelling in his private jet, as does Leonardo, Europe to the US in a private jet to collect a prize for his global warming work. And you wonder why some in the populace are sceptical about the message they broadcast.
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I'd just like to know why those flogging the global warming message (eg Al Gore, Leonardo DiCaprio) have no concern for their own carbon footprint, just had Al in Oz preaching the message and travelling in his private jet, as does Leonardo, Europe to the US in a private jet to collect a prize for his global warming work. And you wonder why some in the populace are sceptical about the message they broadcast.
The stats are out there; take a look. The graph of increasing global temps starts soon after WW2 and just climbs, more or less in a stright line. Before then there were fluctuations up & down for various reasons (sun spots etc) but in the ast 70 years it's only gone one way. Seems clear enough.
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Total non sense. If there is an orginazation thats needs to be put to death it's the IPCC and all their little troll followers that write stuff like that. Pretty soon they will say that flatulence and breathing are threats to climate. Enough is enough. Wake up people!
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The stats are out there; take a look. The graph of increasing global temps starts soon after WW2 and just climbs, more or less in a stright line. Before then there were fluctuations up & down for various reasons (sun spots etc) but in the ast 70 years it's only gone one way. Seems clear enough.
Actually an interesting idea
I a lot of respects I put more credibility into observed and measured impacts that the theory.
20driver
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I don't think that many here (including myself) have the technical background to discuss the physics of a very complex subject like climate change, but anybody around my neck of the woods can see the effects of climate change simply by walking to one of our nearby glaciers. They have retreated within human memory. Places that were covered with ice year-round when my parents went hiking are now ice free in summer. This is aside from other data, such as Seattle regularly setting temperature records.
Old panoramic photos show glacier retreat around Mt Ranier
But on the other hand, the ice cream in my freezer is frozen and it still snows in the winter, so climate change is a hoax!
Old panoramic photos show glacier retreat around Mt Ranier
But on the other hand, the ice cream in my freezer is frozen and it still snows in the winter, so climate change is a hoax!
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Unless I missed it the old photos don’t have dates on them. Just the year..
Also for a proper comparison the new ones should be in that weedy 1930’s black and white as well..
The difference is fairly minimal. And as for the third one. I’ve seen changes like that on a days sking in April Which of course I went to on foot after my container ship ride to the continent
Also for a proper comparison the new ones should be in that weedy 1930’s black and white as well..
The difference is fairly minimal. And as for the third one. I’ve seen changes like that on a days sking in April Which of course I went to on foot after my container ship ride to the continent
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But to paraphrase 777Nine, what a strange thing that this (sudden massive Arctic melt, whatever) is happening on a Gargantuan Scale just after the Industrial Revolution and an unprecedented population explosion. Mighty coincidental.
Water pilot makes an excellent point. Same stark evidence where I live -- a wide continent and an ocean away. When I first moved to these parts four decades ago, you could go up to the Mont Blanc glacier on the ancient cog railway and amble down to the thing. Since then they've had to build a freaking cable car from the station up there down to the glacier, then it kept retreating so now it's additional metal stairways every year. (Only the fittest survive the climb back up.) And they've conscientiously painted each year of the retreat on the bare rock. Pretty graphic.
Again ---- funny old case of synchronicity that this should be happening just now in this era of truly massive consumption of fossil fuels. SUCH a coincidence.
Anyway, to the thread topic, I haven't a clue, and whoever said probably none of us can speak with authority on this is certainly right. Though generally speaking, more energy in the system (extreme weather) would make more turbulence unsurprising, I suppose.
What I've read is that the jet stream is generally weakening because what drives it is the stark interface between arctic and tropical air masses. When the Arctic was all frozen up, the air above it was Cold, collapsed in on itself. So the atmosphere (let's say troposphere) there was compact. Contrast this with the tropics, where the sun drives everything to tremendous heights. So there was always a slope downwards from equator to pole (Why else would wind want to blow north in the northern hemisphere, Coriolis notwithstanding)?
Now, with rapidly heating poles (bare, radiation-absorbing rock instead of reflecting ice) you have the "ice-albedo positive feedback loop" that is the lifting upper limit of the polar troposphere and flattening the slope. The jet stream is weakening and starting to meander, like the stream from a garden hose with the water pressure radically reduced. So it meanders down south in eastern North America in winter and you have -40° in Chicago (and the climate-deniers say "See?!? What'd I tell ya!!") and then meanders north last month, bringing tropical air to Alert, a Canadian military base and the world's most northerly settlement. They had temperatures in the mid-20s celsius, whereas usually they're lucky to get much above 5° in July.
That's what I've read, anyway.
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The latest study, however, took a different approach. “Just because the speed isn’t changing, doesn’t mean the jet stream isn’t changing in other ways,” said Prof Paul Williams of the University of Reading, the lead author of the research.
What I've read is that the jet stream is generally weakening because what drives it is the stark interface between arctic and tropical air masses.
So, which is it?
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@Timmy Tomkins
I have read quite a lot on this subject and listened to many interviews with scientists who specialise in climate and related areas. I can't recall any who say man made climate change is bollox
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When the next climate change/crisis summit is attended by people using virtual reality headsets only rather than a Gulfstream or Phenom I might just, possibly, start to listen to these clowns. Until then stop taking the ****.
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Evidence? What Evidence?
Paxing All Over The World
Thread Starter
Gosh, even stronger reaction than I expected! However, it doesn't matter what we think as the climate change - however driven - is upon us and the next 50 years will be interesting for our children and grandchildren.
The chances of changing the behaviour of mankind across the planet and reducing dependence on fossil fuels is Zero. As the fuel runs out, people will take that problem seriously but the climate change will have happened. Now back to this outpost of JetBlast
The chances of changing the behaviour of mankind across the planet and reducing dependence on fossil fuels is Zero. As the fuel runs out, people will take that problem seriously but the climate change will have happened. Now back to this outpost of JetBlast
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As you indicate, the fuel crisis is going to, once again raise its ugly head, fairly soon, as well. We've had a few years of smug confidence as a result of a large, short-term increase in production of tight oil (and gas) as a result of fracking and horizontal drilling. That's not going to last much longer. Those who doubt that should try a bit of research beginning with googling "depletion rate of fracked wells."
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Weather Constant
Weather changes constantly, and it will always be a topic of lively discussion. This thread is proof of that. Speaking of proof, it's about time for that evening cocktail.
Cheers,
Grog
Cheers,
Grog