On 4 Mar, 09:23, Waghorn wrote:
On 3 Mar, 21:00, Simon S wrote:
On 3 Mar, 11:22, Waghorn wrote:

I wonder if some one has a UKMO North Atlantic surface analysis for 12
UTC on 3 Feb 1991, or indeed any surface analyses for 02-03 Feb 1991.

This relates to the exceptional extratropical cyclone known as 'The
Greenhouse Low' which produced extreme winds over Iceland.

Please contact me at
davidDOTwaghornATgmailDOTcom

Sorry I cannot answer this but do have a question.
Did this low have any affect on the delevopment of the significant
cold and snowy spell that month?

Well the flow over Europe was blocked and the Greenhouse Low was one
of a number that developed at low latitudes and ran polewards on the
western flank of the high. Modern theories of blocking emphasise the
importance of transport (of Isentropic Potential Vorticity) to high
latitudes, reinforcing blocking, so they may well be related in some
sense.

http://www.esrl.noaa.gov/psd/news/2010/012010.html

On 4 Mar, 09:27, Waghorn wrote:
On 3 Mar, 21:01, "Will Hand" wrote:

David, the library and archive at MetO in Exeter will be able to run off a
photocopy of the plotted and analysed chart for you. There will be a fee for
this though. Worth contacting.http://www.metoffice.gov.uk/corporat...ary/index.html

Will
--

Thanks Will- I hadn't realised they offer this service off-site. Will
enquire.

Martin- the Weather Log charts are too small for our purpose. Cheers.

Thanks everybody-as ever this NG on form is a jolly helpful place.

Best,
David

Just to say the NML were very helpful. Although the ASXX is not
available for 1991 they scanned the available charts and sent by
return email (no cost).
Cheers all round!
D