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Post by alf1951 on Mar 28, 2016 17:18:49 GMT
After lugging round a ridiculously heavy extension ladder while cleaning out the gutters I felt the need to rest my ageing bones. Sitting in the garden during a brief spell of sunshine, camera on lap, I noticed several flights overhead leaving contrails. With the effects of wind at different altitudes each contrail evolved differently. While one exactly matched my previous photo I guess, as with many things, I find there is often LESS to things than meets the eye! This one was interesting however although it started out like every other contrail from a twin engine jet airliner. Alf
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Post by NellyDee on Apr 3, 2016 7:55:53 GMT
Hi Alf. I watched Channel 4 World's Weirdest Weather last night - 7.30 Sat 2 April. Towards the end of the programme they were giving examples of air pressure and wind at different levels and what this does to contrails. Among the photo shot examples were the squiggly line contrail and like your photo above, along with many other examples circles, zigzags and even a complete large square. I thought for a moment your two photos had been used as examples.
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Post by alf1951 on Apr 3, 2016 9:16:54 GMT
Funny you guys should mention that - I saw it too and have a screen grab of the squiggly line one which is remarkably similar to the shot with which I started this thread. As I said - there's often less to things than meets the eye.
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Post by alf1951 on May 5, 2016 6:44:01 GMT
This time not a contrail but a "distrail" that excited me yesterday (I'm easily pleased!). There is clearly a contrail in the lower half of this image but above it is, I believe, a distrail where an aircraft at a higher altitude has passed through a patch of cirrus. Heat from the engines has vapourised the ice crystals in the cloud to leave a clear line through it.
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