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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: (Fwd) The Most Anomalous Refraction Yet or What ?
From: Marcel Tschudin
Date: 2009 Aug 4, 22:53 +0300
From: Marcel Tschudin
Date: 2009 Aug 4, 22:53 +0300
Brad, you wrote > It took me a bit of time to realize that you are differentiating between two atmospheric effects. > > 1) Omega Sun. > 2) Inversion Sun. A typical example for a sunset within a strong inversion is shown on this page http://www.atoptics.co.uk/atoptics/gfim13.htm Typical for it is the sun reaching a rectangular shape. I usually didn't notice it when looking directly at it, but afterwards on the photo. Also typical is the bright line which remains at the horizon may be for 10, 20 or more seconds and which gives the impression that the sunset is delayed. The Omega-Sun or inferior-mirages appear typical in autumn when the sea water has been warmed during summer and the atmosphere becomes colder. The opposite, the Inversion-Sun or mock-mirages appear typically during spring. Marcel --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
