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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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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 |
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"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 --------------------------------------------------------------- The views expressed above are entirely those of the writer and do not represent the views, policy or understanding of any other person or official body. --------------------------------------------------------------- |
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