Forum Replies Created
-
Posts
-
#79492 (I suppose that refers to the particular post which this reply will appear beneath).
MikeL that is more than a hint of undulatus. Perhaps we should look out more for multiple varieties in one shot, which is permissible.
Bill’s coloured arc must be a hint, though, as I have not seen it yet – perhaps he has a better screen than I. EDIT: Oh, on second thoughts, if I move my head to look at the screen rather more sideways than head on, then I do see the more cumuliform parts of the middle picture become a touch greenish yellow???
Incidentally, I am told by CAS that user editing capability is currently set for one hour from posting.
‘H’
Hygge howlers
My apologies, MikeL – too late at night, too rushed. I used to have a penchant for spelling (it’s funny but I thought ‘penchant’ as I was writing ‘pension’). And of course stratiformis is a genuine species.
Unfortunately (in my opinion), I can not now edit my mistakes above and below (since this post appears to be inserted below my major howler (which I am replying to) and above the ‘pension’ spelling howler).
MikeL, ‘Stratiformis’ is in Hamblyn’s glossary, but since it suggests stratus and is not a species itself I would prefer not to use it in our context. However, we are now really into administrivia which bores most, so lets settle for something like ‘widespread’?
NLC
Bill, you are a scientist, I think. I am a hobbyist with a penchant for administrivia.
The scientist should advance hypotheses for others to assess. The ICA says NLC have been in the literature for over a century; the ICA defines and describes NLC, albeit very briefly; the ICA is more expansive on how to observe, record, photograph NLC (and Nacreous).
My comment was based on coding and classifying clouds. NLC does not appear in the Cloud Classification table for any genus e.g. in the Handbook pp 104 – 105; this was the reason for my error suggestion, but I accept the Handbook might have worded differently to cover Bill’s hypothesis. The Met Office PDF Cloud Types for Observers, 1982, (q.v.) mentions NLC on (hardcopy) page 32 only under ‘Special Clouds’ and says ‘They are ignored when assessing CH and C’.
Very interesting, MikeL, but not the species Stratus. Lacunosous according to The Cloud Collector’s Handbook is found in Stratocumulus, Altocumulus and Cirrocumulus (and it adds enigmatically noctilucent – a bug?).
I could not find lacunosus in Hamblyn’s books at a quick glance. Your pics are almost lacunosus and mamma?
The Weather Experiment
This e-book, mentioned in an earlier post above, now turns out to be a BBC Book of the Week, if you like your books that way:
http://www.bbc.co.uk/programmes/b006qftk/episodes/player
N.B. Like the London Bus Law (for want of a better name) this is the second sky-related BOTW recently – see/search Skyfarer.
e-book on the history of weather forecasting.
http://www.randomhouse.co.uk/editions/the-weather-experiment/9781448155972
May Day
The last post to this forum was 6 days ago it says (by a hygge at that).
So here is one held up my sleeve for emergencies – nice cloud in Queensland
That book Skyfaring is BBC Radio’s Book of the Week if you fancy listening to a few extracts:
Paint The Clouds
Ran well but finished fourth today:
http://www.sportinglife.com/racing/results/25-04-2015/sandown-park/result/665581/bet365-gold-cup-chase-grade-3-handicapHallo, Marc, and welcome. ICA = International Cloud Atlas, Manual on the Observation of Clouds and Other Meteors, World Meteorological Organization. Volume I, Revised edition 1975, is a technical manual; Volume II 1987 is 212 pages of pictures – page 28 Stratus nebulosus undulatus, page 29 Stratus nebulosus.
I use these books a lot, but to be honest I don’t think many others do. They are available on-line:
We learnt on the old forum that the ICA will be updated one day by WMO.
In short, no, Richard, and I have never seen anything like it either. Assuming it was not raining, I guess you can rule out Nimbostratus. I guess someone will say asperatus
I don’t think you can rule out Stratocumulus, particularly at the top, and the bottom where it might be lenticularis? There might be undulatus in between?
ICA Vol II, pages 28 and 29, show Stratus nebulosus. It mentions things like the height of the cloud base not being uniform, being thinner in parts e.g. near your horizon; differences in optical thickness may reveal undulatus.
Great picture. Many thanks.
Circumzenithal arc and a few other nice weather pics 20APR15
Oh my golly – as we have never seen them before. Alec, was it, the contrail collector would have been over the moon.
‘H’
Sony World Photography Awards 2015, Somerset House, London, Apr24-May10
Umpteen images, not sure if all are 2015, not many clouds, but here’s one ‘Heaven’s Cloud’
