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By its very nature this tends to look down and miss the clouds, but click on ‘up, up and away’ and there are one or two more horizontal landscape pictures.
Predicting European Winters (technical)
http://onlinelibrary.wiley.com/doi/10.1002/asl.721/fullHans Rosling
Famed for inforgraphics and his TED talk. Herewith an infographic found from a CAS. search
https://cloudappreciationsociety.org/?s=infographicCAS surveyed members’ opinions on contrails some years back, It would be interesting to see the results again, if possible. And even re-survey – Hans’ amazing photo might bias opinions, though.
Wing tip vortexes (and an F15 (after the three dolphins) showing off upside down and so low you might hit it with a stone)
http://www.isomax.photos/action.There is in the cloud literature a picture of a propeller driven (four engine?) plane with vortices but I can’t find it. This one is more dramatic
https://en.wikipedia.org/wiki/Wingtip_vortices#/media/File:Airplane_vortex_edit.jpgHi, Samuel, and welcome. I don’t have a straight answer to your question, but….
In The Cloud Collector’s Handbook, by CAS founder Gavin Pretor-Pinney, 2009, each cloud type is awarded Cloud-Collecting Points. I would have thought rare ones would score highly.
E.g. Pileus pp 42-43 scores a high 45 but because it is short-lived rather than rare. It so happens those pages make several references to Donald Trump – how prescient can you be..
Hmm, good question, Roger. I tend to vote with Noctilucy. Thoughts:
1) These contrails may be unconnected to the ‘floccus’, though contrails can degrade into Cirrus
2) The perspective of the contrail(s) suggests a spreading out towards the top of the picture
3) If it is Cirrus floccus CH2 species it might be intortus variety (*)
4) Floccus can occur in Cirrocumulus and Altocumulus species (#)(*) Cloud Collector’s Handbook, Cirrus, p19
(#) Ditto, Cloud Classification table pp 104, 105US EPA
There must be many other versions of this story on-line
http://www.independent.co.uk/news/world/americas/scott-pruitt-epa-senate-confirms-climate-change-denier-donald-trump-cabinet-a7586546.htmlGood shots, Michael. When you say ‘rotations’ I am not clear what is meant. It does not look like it is rotating in as much as it remains an upside down U; so is it the cloud that is rotating along its (curved) length (perhaps not); or is it the horizontal vortex that is rotating, its ‘upper arc’ (*) being cool cloud, its lower arc warmer invisible air?
There is a bit of an explanation here:
http://www.weatherscapes.com/album.php?cat=clouds&subcat=horseshoe_vortices(*) The Cloud Collector’s Handbook, Gavin Pretor-Pinney, 2009, p71
Not many cloud books mention the horseshoe.Thank you, George, that’s very helpful. It would not have occurred to me about the sharpness. One thinks of heat dissipating quite quickly with distance but I suppose that does not apply to the infrared light.
Paul Simons on haloes today:
http://www.thetimes.co.uk/article/a-heavenly-sight-a-lunar-halo-003f9xprn
