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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#21
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Quoting from message
.com posted on 1 Dec 2005 by JPG I would like to add: Elaine Jones wrote: Quoting from message posted on 30 Nov 2005 by nevillef Don't know where you and your geography teacher were but mine was saying the same forty years ago, whilst also remarking on the fact that many of the coal deposits were formed from tree ferns, which required much higher average temperatures than have been experienced in the British Isles for quite some time. That was more down to whole contenents moving about the face of the earth, rather than ocean currents shifting. Thanks - it may have been pointed out - but my memory is not as efficient as it used to be. -- ..ElaineJ. Briallen Gifts/Cards catalogue at http://www.briallen.co.uk ..Virtual. Corn Dollies, Cards, Coasters, Mousemats, Kids' Tshirts StrongArm Jones' Pages at http://www.users.zetnet.co.uk/ejones ..RISC PC. Corwen, North Wales; Steam Traction;CMMGB&Yukon Volunteers. |
#22
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Graham P Davis wrote:
In the new circulation, the NAD would cease to exist. The Gulf Stream would be a closed anticyclonic circulation with its warm water probably extending no further north than 45N. Would that fuel more and more powerful hurricanes? -- Peter |
#23
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I must admit this , usually when i post get a flood of insults
and arguments and kill file warnings... but this time its all good and people discussing. Have i changed that much? ![]() Interesting replies btw, glad most agree on the theory of a colder uk |
#24
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![]() "nguk" wrote in message ... I must admit this , usually when i post get a flood of insults and arguments and kill file warnings... but this time its all good and people discussing. Have i changed that much? ![]() Interesting replies btw, glad most agree on the theory of a colder uk LOL Neil, people haven't insulted you because they have already kill-filed you and don't see your posts unless somebody quotes them. Ooops :-) Will. -- |
#25
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Peter Hayes wrote:
Graham P Davis wrote: In the new circulation, the NAD would cease to exist. The Gulf Stream would be a closed anticyclonic circulation with its warm water probably extending no further north than 45N. Would that fuel more and more powerful hurricanes? Hadn't thought about that but it seems probable. I suppose one way of looking at it could be that if one route for carrying heat from the Tropics is closed down (NAD), then would hurricanes have to carry more of the burden? -- Graham Davis Bracknell |
#26
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Col wrote:
"Ian Bartholomew" wrote in message ... nguk wrote: Scientists are saying, that new research is contradicting global warming and saying that if the ice caps further break off and or melt then the uk is at risk of getting much colder! Myself ive been saying this for years sigh.. So have the scientists. GW melts the icecaps, the desalination of the North Atlantic stops the gulf stream and we get cold. How is this "new research". There was even a "Horizon" about it a couple of years ago. It's not, basically. Even I've known about it for at least 5 years so it must have been knocking around in the scientific community for some time before that. As I pointed out before, I first read about the NAD sudden shut-downs 40 years ago. Long enough for some so-called scientists to claim it as a new idea. What they have found is an explanation of the mechanics for the switching-off of the NAD. They have gone too far in claiming that they discovered the change to the surface current system and the associated sudden changes in climate. What was interesting about that report was they said that a sub-current that goes towards Spain had become 30% stronger (whatever that means Exactly!) during the last 12 years and the main drift (towards us) had become weaker. So why have there been so many mild winters in the last 12 years, then? I don't want to knock the theory, Younger Drayas and all that, it seems perfectly plausible, but the info presented seems rather contradictory. Although the NAD may be weaker, it hasn't shut off yet. Before our weather is affected, it needs the ocean current system in the North Atlantic to flip from the stable system we have now to the other stable system. -- Graham Davis Bracknell |
#27
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Col wrote:
"Bob" wrote in message ... Will the NAD slowly weaken over many years, or is there historical evidence that it can shut down fast ? From what I understand, it can shut down *very* fast. Perhaps within a decade or so. And indeed can start up again within a similar timescale. These climate 'flips' from one steady state to another, within a matter of a few years, are one of the most important findings of the behaviour of our climate when it had been hitherto assumed that such changes took place gradually over hundreds or even thousands of years. Even the Victorians suspected that climate changes occurred suddenly. In 1932, a science-fiction story by Erle Stanley Gardner (author of Perry Mason stories) was published. This used some of the Victorians' theories - and the Bible - as a basis for a catastrophe story which begins with New York being flooded. The cause of the flood in his story was a sudden shift in the Earth's axis. -- Graham Davis Bracknell |
#28
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Graham,
I collect weather-related fiction. Do you know the name of Gardner's s-f story? Thanks, Pegleg |
#29
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pegleg wrote:
Graham, I collect weather-related fiction. Do you know the name of Gardner's s-f story? Thanks, It's "New Worlds". I have it in a collection entitled "Other Worlds, Other Times" edited by Sam Moskowitz and Roger Elwood, published in the USA by Macfadden-Bartell Corporation in 1969. Original copyright of the story is 1932, renewed 1960, reprinted by permission of Collins-Knowlton-Wing Inc. -- Graham Davis Bracknell |
#30
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Felly sgrifennodd Graham P Davis :
Although the NAD may be weaker, it hasn't shut off yet. Before our weather is affected, it needs the ocean current system in the North Atlantic to flip from the stable system we have now to the other stable system. Did you mean "... to another stable system."? Because what you says implies that there are only two possible stable states; it also sort of implies that we know what the other stable state is. Can we trace this through the records of ice cores, ocean sediment, tree rings or whatever? Adrian -- Adrian Shaw ais@ Adran Cyfrifiadureg, Prifysgol Cymru, aber. Aberystwyth, Ceredigion, Cymru ac. http://users.aber.ac.uk/ais uk |
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