On Thu, 7 Mar 2013 07:02:17 -0000
"Alastair McDonald" wrote:


"Dave Liquorice" wrote in message
ll.co.uk...
On Wed, 6 Mar 2013 04:54:32 -0800 (PST), Paul Crabtree wrote:

I have been contacted by a friend of mine living in Stainmore
1400ft up in the Cumbrian Pennines. This morning he has found some
ice chards in his garden and would like to know where they may
have come from.

Need more pictures really. We had freezing fog this morning, the
rime noticably built up on the trees from 0700 to 0800. It then got
above freezing
and melted.

Unless Staimore is on the approach to an airfield I don't think it
would have
been ice from an aircraft. Around here, apart from the RAF, all the
planes are cruising at around 30,000', any ice that forms doesn't
fall off until the
plane decends into warmer air.

--
Cheers Dave.
Nr Garrigill, Cumbria. 421m ASL.

The transatlantic aircraft pass over Cumbria, and I suspect start
their descent there. Certainly the pressure activated bomb on the
Lockerbie flight did not explode until it was north of you. That was
on an ascent rather than descent but I suspect the angle of climb
would be similar.

Of course, if the ice was under trees then they would be a more likely
source but wouldn't the ice particles be leaf-shaped rather than
rectangular?


Not many leaves about so more likely that they came off the branches;
some of the longer sections look slightly curved across the width. Had
something similar in Jan(?) '63 on one of the rare occasions when
temperature got above 0C. Walking to work at a little before 2200,
sound of ice falling from trees - there'd been freezing rain earlier -
was like machine-gun fire. Stopped an hour or so later as the freeze
resumed.


--
Graham P Davis, Bracknell, Berks.
Carlos Seixas, Sonata nº 1: http://www.youtube.com/watch?v=YXox7vonfEg
And for something completely different, Cumberland Gap:
http://www.youtube.com/watch?v=AsU-LTwx8Co