On Wednesday, April 11, 2018 at 8:13:49 PM UTC+1, Graham P Davis wrote:
On 11/04/18 18:54, Norman Lynagh wrote:
Food for thought

http://www.bbc.co.uk/news/science-en...campaign=bbcne
ws&ocid=socialflow_twitter&ns_mchannel=social&ns_s ource=twitter

It's not the first time that this idea has been put forward but I have
always said that, as our climate is currently anomalously warm for our
latitude, it would be easier for circulation changes to result in
cooling of our bit of the planet than warming.


Yes, it was almost fifty years ago when I first read about sudden
changes in the N Atlantic current circulation and consequent changes in
climate. I think the book in which I read it was published in the early
60s. Of course, at that time they didn't know the cause of the bi-stable
nature of the current system. I'm not entirely sure they've got it right
even now.

--
Graham P Davis, Bracknell, Berks. Web-site: http://www.scarlet-jade.com/

Well, time will tell.

On a similar subject, that longstanding cold pool in the Atlantic seems less evident. At least going by this http://www.emc.ncep.noaa.gov/researc...s/wkanomv2.png
Also the despite the very cold March the SST in the SW Approaches is near normal, 10-11C @ Sevenstones. Mind you, that certainly can't be said for the North Sea.

Also, there was a very cold May/June in 1972 (I think that was the year) The wind was generally W - SW in June. Dominated by a returning Polar Maritime I would assume. (I was a geography student at Middlesex Poly at the time)

Do you have anything on the SST anomalies / circulation patterns that year? I know icebergs were blamed, but that sounds a bit simplistic to me.

Graham
Penzance