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A very interesting thread – Hans has the final say, of course. But I would like to mention one test from page 15, Altocumulus, of The Cloud Collector’s Handbook:
‘…cloudlets… They are white or grey, and shaded on the side away from the sun. This distinguishes Altocumulus from the shade-free cloudlets of Cirrocumulus (p21).’ Then follows the finger test.
Norm, I should have said I bought my hard copy old ICA books, Vol I and Vol II, direct from the WMO itself in Geneva. They just might have some Vol II left in stock (you would not want the old Vol I now).
Old ICA Vol II (available in hard copy still perhaps if only second hand).
Norm, this is the pictorial version of the old ICA. It helps by using arrows to pin point areas of an image using the Cloud Coding as above. The index is at the back and is cloud name specific starting with CL e.g. Cumulus; the Code figure has three columns CL, CM, CH.
Norm, welcome, and you have much good advice in this thread; there is mention of time and of more than one type of cloud at the same time. You may wish to look at this old UK Met Office PDF (nomenclature would be old ICA). In particular there is a pictorial guide to CL (lower cloud) on page 3 since you have many such.
https://www.metoffice.gov.uk/binaries/content/assets/mohippo/pdf/r/cloud_types_for_observers.pdf
The current version of the above is in the new ICA
https://cloudatlas.wmo.int/coding-of-clouds.html
but I find the old form easier to use.
Polar Vortex is in the media of late e.g.
What is a polar vortex and when will the ‘Beast from the East’ hit the UK?
Billy Graham retired to North Carolina, I think. The following on this CAS Forum suggests he made a good choice:
Lorraine Lordi
ParticipantI am very happy to have this new forum. I look forward to taking more pictures and talking with others across the world. Thank you. Lorraine in Asheville, North Carolina, USA. North Carolina’s nickname is “Land of the Sky” because in these mountains, we can see the sky change moment to moment. And we always have clouds!
I don’t know how you guys do it – spot such cloud formations, let alone such photos too.
P.S. Morse (a UK tele detective) on a railway platform asked a chap who had given him rail info if he was a trainspotter – railway enthusiast he answered. I don’t think I like sky enthusiast as much as cloudspotter.
Hampshire, UK, Humidity (which I wanted to track)
Last year in the January sales I picked up for a snip a London Clock Co ‘Digital thermo-hygrometer and weather forecast clock’. They don’t seem to offer it any more, but it looks like an old fashioned mobile phone. It has in the centre ‘Weather forecast icons’ which always seem to include a cumulus cloud which is nice sitting on my kitchen window shelf. Temperature and relative humidity are shown digitally below the icon.
The point of this is to say that once last year the cumulus vanished.
It happened for a second time this afternoon, albeit briefly, when the relative humidity dropped below 40%. The cause this time was the cold east wind coming in from Scandinavia and the Russian Urals.
A few times the relative humidity has gone above 80%.
Billy Graham, preacher
Immutable – nevertheless I thought this was suitable
https://us11.campaign-archive.com/?u=3b978e064761964547808bac4&id=23ced59fb8
Another silver lining to boot. I was trying to snap some somewhat faint crepuscular rays early afternoon recently and the question came to my mind – are crepusculars more common at either end of the day?
Thanks for the opportunity to ask the question, George.
Keelin, as well as your wonderful photos, you have a wonderful way of expressing my thoughts e.g. about this thread. Many thanks.
Where Are The Clouds?
Apparently Sao Paulo nearly ran out of water last year. This year it’s Cape Town in trouble. The link is to a World Service 10 minute discussion item — abstract below
http://www.bbc.co.uk/programmes/w3csvrh7
Will Cape Town Run Out of Water?
Science in Action
9th July – It’s being called Day Zero, the day the taps are turned off in drought stricken Cape Town in South Africa. After 3 years of unexpectedly dry weather leaving no water in the reservoirs that serve the city, we ask what could have been done better to mitigate the water shortage and how to prevent the same thing happening in other cities around the world.P.S. (Since no Edit facility)
Coombes has a heart shaped murmuration in The Times, UK, 20FEB2018, but I can’t find it on-line (or I might have put it next to the recent bird-shaped one). It was credited JONATHAN COOMBES/MERCURY PRESS.https://en-gb.facebook.com/jonathancoombesphotography/
Some fine landscapes (and birds) from this photographer.
My first (in Windows 10) editing attempt; I halved the horizontal pixels, the vertical pixels halved automatically, and the size which was 1.3mb is now <2kb.
I have not seen the edited version, and have lost the original….
Sunday’s Cloud copied here. (I know we should not have too much of such copying but allow me an occasional one)
https://us11.campaign-archive.com/?u=3b978e064761964547808bac4&id=5d414d2fa1
