On 21/05/2019 19:24, JGD wrote:
On 21/05/2019 17:09, Graham P Davis wrote:

I've also got some odd thoughts - perhaps with the accent on "odd" -
regarding the current circulation of the North Atlantic, some of which
*may* be causing the cold puddle south of Greenland.
http://www.scarlet-jade.com/science/...f-stream-stop/


Though if verified could this theory translate into a slight if
temporary reprieve for the UK from the worst effects of GW? Any
estimates of the climatic effects of a flipped NAD, maybe -2C? (Just an
observation, not an excuse for inaction!)


I suspect the cooling effect might be more but it could be offset by a
reduction in blocking easterlies in winter. The enhanced N-S thermal
contrast along the new Gulf Stream-NAD boundary ought to lead to a more
zonal atmospheric pattern. This may mean the cooling effect would be
stronger in summer than winter.

Another effect would be that I think the tropical waters would warm more
quickly as the circulation becomes more closed. This would lead to
higher sea levels along the eastern seaboard of the USA and higher
frequency of hurricanes hitting the northern regions of that coast. I
remember reading that this has happened in previous similar situations.

--
Graham P Davis, Bracknell, Berks. Web-site: http://www.scarlet-jade.com/
With great power comes great electricity bill.
OS: Linux [openSUSE Tumbleweed]