Multicloud skies
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Sometimes there’s so many different clouds to see simultaneously. This might be an interesting addition for the Cloudspotter app: the multicloud sky. Perhaps something for a badge, when identifying at least, say, 4 different cloud types and/or optic phenomena in one spotting. Or something like that. Then again, it may be difficult to capture such skies without making use of the Panorama function of the camera or using an add-on lens.
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Eric, your Multicloud skies sound to me akin to the cloud classification CM=9, Chaotic sky
https://cloudatlas.wmo.int/cm-9.html
But I guess Gavin Pretor-Pinney and his publisher for The Cloud Collector’s Handbook made a conscious decision not to involve the cloud classification code figures CL, CM, CH for low, medium and high clouds, perhaps for simplicity to engage a wider public.
Rival author Richard Hamblyn (also a CAS member) does use the codes in some of his books.
N.B. The old ICA Vol II, a book of pictures, gave the code figures beneath each picture. The three pictures of a Chaotic sky gave respectively
CL=1, CM=9, CH=8
CL=0, CM=9, CH=0
CL=3, CM=9, CH=2
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Cloud Types, 1982
Eric, page 13 of this PDF gives a Pictorial Guide to mid-level clouds CM: Ac – As – Ns. CM9 Chaotic sky is at the top right of page 13, while CM9 is described on page 16
http://www.metoffice.gov.uk/binaries/content/assets/mohippo/pdf/r/i/cloud_types_for_observers.pdf
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