This has been bugging me for the past couple of days. The models show warm
air being pumped over Greenland, which is instrumental in bringing the
impending colder spell.

However, if you take a look at:

http://217.160.75.104/pics/Rtavn962.gif

for example, you'll see the air that's moving eastwards from Greenland is
positively tropical - 555dam, +12C at 850hPa. I could perhaps understand
some warming due to a Foehn effect, but surely that wouldn't explain such
warming....

FWIW the chart for 24 hours earlier shows the mild pool at +8C:

http://217.160.75.104/pics/Rtavn722.gif

"Darren Prescott" wrote in message
...
This has been bugging me for the past couple of days. The models show warm
air being pumped over Greenland, which is instrumental in bringing the
impending colder spell.

However, if you take a look at:

http://217.160.75.104/pics/Rtavn962.gif

for example, you'll see the air that's moving eastwards from Greenland is
positively tropical - 555dam, +12C at 850hPa. I could perhaps understand
some warming due to a Foehn effect, but surely that wouldn't explain such
warming....

FWIW the chart for 24 hours earlier shows the mild pool at +8C:

http://217.160.75.104/pics/Rtavn722.gif

I am by no means any kind of expert in these but are these extreme numbers
just an anomaly of the algorithms used in the models in the way they handle
the Greenland topography? In a similar way yesterday, while looking through
the various runs, one (I don't remember which now because of it's unreality)
had a 'high' centre of 1080mb!! over Greenland sometime into next week.
Hardly meaningful as a real value I thought, but just an indication of the
general situation.

--
Pete

Please take my dog out twice to e-mail

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