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Lo-Ci

May 31 2011 at 4:44 PM
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  (Login Cloddy)

Here's something I've been meaning to post for a while. Last November 28th, after sunrise, I saw some Ac with some virga (cirrus). I guessed the hight of the cloud was getting on towards 15,000ft. When I went to collect my newspaper, I saw the Ac was dissolving fast and there was a mock sun, so I took a photo.

[linked image]

On the way back from the paper shop, about 10 minutes later, the Ac had gone and all that was left was the cirrus and halo.

[linked image]

I next checked the Chilbolton Lidar at http://www.chilbolton.rl.ac.uk/weather/default.htm . This showed the Ac to have been at about 13,000ft and the cirrus seemed to have extended below that to near 7,000ft.

[linked image]

The following graph shows the temperature structure in the area near the time. The product is provided by the University of Wyoming Department of Atmospheris science. http://weather.uwyo.edu/upperair/sounding.html

[linked image]



    
This message has been edited by Cloddy on May 31, 2011 6:02 PM


 
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