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Cirrocumulus - possible modification by aircraft?

PostPosted: 2014 Jun 13, 17:04
by Martin Rowley
CI_CC_CASFLO_13JUN2014_WESTMOORS.jpg
CI_CC_CASFLO_13JUN2014_WESTMOORS.jpg (49.5 KiB) Viewed 1285 times


Time: 13/0905Z JUN 2014
Place: West Moors, East Dorset
Looking: SSW

Not sure what's happening here; I think the 'main' cloud (running away from photographer in image) is an old condensation trail that's considerably spread apart - then there's been some 'interference' by a/c in transit possibly disturbing the thermal/humidity structure through the layer and triggering instability. I've noted it as Cc cas & flo (I could detect distinct ice trails/tails below the cloud elements). Not seen anything quite like it before.

Martin.

Re: Cirrocumulus - possible modification by aircraft?

PostPosted: 2014 Jun 14, 16:18
by greg_gruner
Interesting. Part of it looks like a "distrail" (clear space cut through cloud) possibly caused by the heat of the aircraft's engines evaporating the cloud. But in you case it looks like that the heat has also caused instability and convective type clouds to form.