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Old January 13th 10, 10:24 PM posted to uk.sci.weather
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Default Current model runs

"John Hall" wrote in message
...

One surprising thing that I've just noticed, the GFS and ECM operational
runs at 00Z on the 13th differ by 5C in their forecast of the London
temperature at midnight tonight, ie at only 24 hours range. The GFS was
going for +2C and the ECM for -3C. I suppose they had differing opinions
about the amount of cloud cover, though -3C in London tonight strikes me
as over-egging it even if the cloud cleared.


EC's 00Z operational run did indeed have a break in the cloud cover which
accounted for the drop. The 12Z op run is similar to other models and
maintains the extensive cloud cover with the 2m temperature rising a little
after midnight (+2 or so by 06Z).

Jon.


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