Joining the CAS Community
To view the CAS Community pages, you will need to confirm you accept our Terms and Conditions. If you do not accept them please click Back in your browser.
To participate in Cloudspotter Groups and to view other Cloud Appreciation Society members, you will need to complete your own Community Profile by uploading profile and header images and confirming details about yourself.
You have selected:
As I said to Tom, I am not much help. But having been through Poth’s comments with two overlapping windows on my laptop, I would say Poth did a good job.
As per the Handbook, Cu should have flat bases (perhaps a guideline more than a rule). They form a few hours after daybreak on thermals, dissipating before sundown.
Bill, your data will be an excellent reference for this Forum. I note you say NLC are quite common in the N Hemisphere (I have not seen them). I just posted in the Above The Clouds topic a random set of pictures from the CAS Gallery, all by Captain Ghorbal – of the ten pictures, two are NLC. (He was active 2008 – 2010).
Wonderful stuff in your gallery, GP-P. Another way to search it is to track a particular person e.g. here at random Captain Richard Ghorbal:
Dust Cloud Video
I thought the event so outstanding as to be worthy of a second link. Some pictures are the same, but many different (even a drone towards the end):
Poth, at the Serpentine Galleries right now there is an exhibition called ‘Boomerang’ by Cameroonian artist Pascale Martine Tayou. One work is a cumulus cloud sculpture much as your post above, but pierced by what seem to be wooden stakes. It is not an easy website to view, I guess they want you to go and pay up.
Then there is always the converse – the one that got away. When MikeL was catching fog in Phoenix I came to the top of a slope and a break in the trees. The whole of the South East had the finest undulatus I have ever seen. I always carry a shirt pocket camera (no smartphone) but it wasn’t in the windcheater pocket it should have been in. The resulting flailing of hands around other pockets then jumping up and down with fury is what I call the flap dance. You see something similar when they misplace their wallet, smartphone etc.
Fair enough, MikeL, and thank you. As for the last one, like the Handbook says ‘ominous shadowy base’, nothing mediocre about it. Certainly looks like it’s changing explosively. It’s a wow.
Tom, apart from observing most clouds are cumuliform, I think I can’t help much. The cumulus is realistic in as much as it is not all white but has shades of grey (I didn’t count).
I am new to this Forum’s technology, and in case others have the same problem (no in-line pictures or links to pictures) I will point out that you need to click on Tom’s Profile Picture to get to Tom’s Profile, then click on Album where all eight pictures are. Click on a picture and it will enlarge (then Ctl + will enlarge again (and again), Ctl – will reduce). To exit the picture click on Album and repeat with the next picture.
It was moderator Andrew Pothecary (Poth), I think, who pointed out that apophenia applied to clouds that look like things. When I looked it up I came across this MS Researcher, ‘Apophenia’, and her motto ‘making connections where none previously existed’:
So I tend to think of it in terms of the motto; the warmer, dryer fohn causes earlier flowering, a connection which I had not known existed, and possibly other Forum members had not known either.
Anyway, participating in the Forum can but improve the mind. Q.E.D.
MikeL, I keep coming back to your beautiful opening shot in this topic, but it worries me you call it undulatus – I would have thought it is a classic lenticularis (hence orographic), better than much in the literature?
And while I am here, since you have never seen NLC (I guess it would not be expected at the latitude of Az) how did your topic get the tag ‘NLC noctilucent clouds monochrome imaging’? From you, from Bill, automatic? Are multiple tags merged into the one we see?
Paul Simons in The Times (UK) 20FEB15 mentions fohn again. On 18FEB15 Fyvie Castle, Aberdeenshire, Scotland, soared to 15.6C (60.1F). He said Aberdeenshire can benefit from some warm, sunny conditions as fohn winds sweep down from the Highlands.
As Rare As…
1. We started with ‘… snow in Phoenix, Az’. Now my friend in Dallas, Tx sent me a picture of snow in Dallas yesterday – looked like an inch or two. (Checking my Weather Guide data for March, Dallas has an average snowfall of 0.2″, max 4.3″. For comparison Phoenix, Az. has a Trace and 0.2″. There are several others < Dallas, mostly further South and/or coastal, I would say).
I actually thought that though off-topic this was an excellent illustration of MikeL’s guideline ‘always have your camera ready’. MikeL emphasises that Cloud Moments can be fleeting (as the red-violet moment in the sunset in the first (and only so far) picture in my Forum Album).
In The Independent Wed 4MAR15 it inspired political cartoonist Dave Brown to a cartoon (which I cant find on-line) entitled ‘The Flying Weasel… Shock Picture’ with the UK Prime Minister as an aghast woodpecker, and upstart Nigel Farage, UKIP, as the weasel (fag but no pint of beer).
Interesting, Airhead – a good example of apophenia.
Airhead, putting two and two together, we must have enjoyed your wife’s contributions to the old Forum – Alexxx? With the droll profile picture old goggle eyes? Perhaps she will find Bill’s recent posts here of interest.
Regardless, either or both are doubtless enjoying the International Year of Light; light2015.org.uk. This may well interest some on this Forum though as far as I could tell at a quick look there is much astronomy but no cloud (no challenge); not surprising I suppose.