View Single Post
  #4   Report Post  
Old August 15th 09, 12:30 PM posted to uk.sci.weather
Graham Easterling[_2_] Graham Easterling[_2_] is offline
external usenet poster
 
First recorded activity by Weather-Banter: Jul 2007
Posts: 1,810
Default Repeat performance ...

On 15 Aug, 12:12, "Martin Rowley"
wrote:
"Will Hand" wrote in message

news
Are the British Isles getting cloudier I wonder?
This would be consistent with GW and increasing specific humidity
due to warmer oceans.


... interesting thought: certainly *by day*, the sunshine is
struggling again this month (as last). Whether anyone's done a
specific analysis as to total (overnight) cloud cover in recent times
I'm not sure. Sort of thing we outstation forecasters used to do at
airfields ....

Martin.

--
Martin Rowley
West Moors, East Dorset (UK): 17m (56ft) amsl
Lat: 50.82N * Long: 01.88W
NGR: SU 082 023


Not the generally the case in the far SW this year (though it was more
so last. )

In fact anomlies a-

month Av Max Av Min
Jan +0.1 -1.2 (some exceptionally cold nights)
Feb +0.3 -0.6
Mar +1.1 -0.1
April +0.7 +0.3
May +0.8 +0.8
June +0.8 +0.4
July -1.1 +0.4
Aug +0.3 +0.3 (so far - rising rapidly)
Average +0.4 0.0

In fact there have been a number of notably cold nights this year,
including earlier this month.

(1971-2000 norms base on the old Penzance station until 1990, and then
mine. My current site is very close to the old official site.
Virtually the same alt & distance from the sea)

It is true to say that during the recent 'humid' spell, Penzance has
seen a good deal of sunshine whilst areas more exposed to the SW have
not, and therefore the maxima have been lower (though still a good
deal higher than last year!)

Graham
Penzance