From Tony Budd
Reading how contrails from second world war bombers changed the weather (16 July, p 14) brought to mind the flight marking the 10th anniversary of the wartime 1000 bomber raids by the UK’s Royal Air Force.
I was living in west London, near Northolt airfield, and the weather was fine, clear and very warm. A huge band of aircraft appeared, probably higher than the original 8000 feet used for the raids.
They covered the sky as far as you could see, leaving a “carpet” of contrails which soon merged. It immediately became noticeably chillier, and as far as I remember the temperature did not recover for many hours, if at all, that day.
Wickford, Essex, UK
