|
meteoptic-l [ät] ursa.fi
message archive
This is meteoptic-l [ät] ursa.fi message archive.
Note, your can reply the messages on this page only if your
are already subscribed the list.
» To the end of the list/message
> We often see coronae when the image of the sun and clouds are reflected
> off surfaces. Would anyone know when irridiscent clouds are more often
> seen or in what conditions they come out?
I can't say very much about that, but there some cloud types,
in which iridescence appear more often. Altocumulus is, I
think, the most common iridescent cloud type. Also in the edges
of cumulus and cumulonimbus are seen colours.
The iridescence need uniformly sized water droplets in some
part of cloud. If the droplets have different size and the
diameter varies a lot, no iridescent clouds are seen.
Few years ago there were an article "All about iridescence" in
Weatherwise magazine. It was not "all about topic", but gave
several information on these clouds.
-VeikkoM-
|