Yearly Archives: 2011

Atmospheric optics meeting of 2011 in Finland

30.5.2011 1 Jari Luomanen

Finnish Atmospheric optics enthusiasts met on 27-29 May 2011 in the Artjärvi observation centre. The topics of the presentations varied from the latest scientifical results in NLC research and simulation of higher order rainbows to the polar expeditions and observations…

Displays

Elliptical halo from 22 January 2011

27.1.2011 3 -

Midday Altocumulus move thru the area and while passing through, I get a fine corona around the sun and later on lenticular cloud formations pass through showing fine iridescence. With sun getting sort of low, more AC roll in precipating…

Halo information

Hollow columns halo simulation

9.1.2011 11 -

I wish you all a very happy year 2011, may it be rich in halos and celestial wonders! I ran some simulation of halos created by hollow columns. Usually, hollow columns are considered to be poor halo makers, reducing the…

Displays

Lowitz arcs from Florida

8.1.2011 0 -

Nick Beck has sent this high cloud halo display that he observed on Christmas eve in Florida. The sun elevation was 31 degrees when it started and the display ended when the sun was 7 degrees above the horizon, lasting…

Yearly Archives: 2011

Atmospheric optics meeting of 2011 in Finland

Elliptical halo from 22 January 2011

Hollow columns halo simulation

Lowitz arcs from Florida

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