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Hi Marcel

It took me a bit of time to realize that you are differentiating between two atmospheric effects.

1) Omega Sun.
2) Inversion Sun.

Upon investigating these a bit, I came across

www.atopics.co.uk

which has wonderful pictures of these and other atmospheric effects, to include the 'green flash'.

Best Regards
Brad

-----Original Message-----
From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Marcel Tschudin
Sent: Tuesday, August 04, 2009 2:06 PM
To: NavList@fer3.com
Subject: [NavList 9334] Re: (Fwd) The Most Anomalous Refraction Yet or What ?


George you wrote:

> However, the picture does show a bit of interesting atmospheric disturbance,
> in that there's an inversion occurs within the lowest few minutes near the
> horizon, causing the main, highly overexposed, Sun disc to flare out at its
> lower limb, just where it touches the horizon.

The Omega-sun shows up with super-adiabatic lapse rates, i.e.
temperature gradients much less than -10�C/km. Inversions are
generally related to positive temperature gradients (where the sea is
cold and the air warm), they produce a different picture of the sun,
not an Omega-sun.

Marcel



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