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Chuck,
I am surprised that this form of the sun-dag is the most rare to
you. Here (Aarhus, DK) it is by far the most common of all the
arc phenomena. In fact I have yet to see an uncolored sundog!
I catched a photo of one a month back or so, but my scanner is
not quite up yet... Will let you know when and where I post the
picture.
Thomas Dall
Aarhus, Denmark
On Mon, 27 Dec 1999, Chuck O'Connell wrote:
> Hi Bev,
>
> Sundogs can give a couple of different appearances.
>
> The second appearance occurs when the 'sun dog' is formed on a
> cloud that is much closer to the observer. In this case the 'rainbow'
is
> spread out 'across' the cloud. Because of this the normal uniform
> thickness
> of the color bands becomes distorted - some seem longer and smeared out.
> Some people refer to this as a 'rainbow cloud'. I've only observed this
a
> handful
> of times in 20 years of looking. It is very beautiful. I've also never
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