Exceptional visibility

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Exceptional visibility

Postby Bernard Burton » 2013 Jun 04, 10:08

The visibility at this morning's 0900z observation at Wokingham seemd to be almost unlimited. Cirrus cloud, quite dense and convective looking, could be easily seen to the NW. Measurement of the elevation was 0.5 to 1.0 deg. For a cloud height of 9 km this gives a minimum range of 245km. The 0900z satellite image, see link below, shows the cloud to be over northwest Wales, at a range from Wokingham of 250 to 280 km.

Bernard Burton
Posts: 17
Joined: 2011 Nov 30, 23:06

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