On Sunday, 12 July 2015 17:42:56 UTC+1, Bruce Messer wrote:
He seems to have been reading the comment that I made in this newsgroup on the 8th of July.

in the "Met Met Office explanation of Heathrow record" I did post "it would be interesting to see a graph of aircraft takeoff and landings for that day and just wonder if they were just clearing a bit of a delay on long distance 747's at around the time the maximum occurred"

Having worked at RAF stations for a good part of my observing career, it does seem plausible depending on the exact siting of the Stevenson screen.

Interestingly 6 (or maybe 7) of the 14 record breaking sites that the Met Office list in their blog are also on airfields!

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Here is a photo of the Stevenson screen at Heathrow airport with a Virgin 747 taxing in the background.

Scroll down to page 7 and Fig 4 in this UKMO doc:
http://cedadocs.badc.rl.ac.uk/270/1/factsheet17.pdf

Nuff said?

Len
Wembury

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