Monday, January 30, 2012

Circumzenithal Arc

gastephen has added a photo to the pool:

Circumzenithal Arc

Carneddau Solar Halos - 20120128 - 02 - CZA

This impressive display of atmospheric optical phenomena – caused by ice crystals in high cirriform clouds refracting and reflecting the light from the sun – was witnessed around 2pm on 28 January 2012. It was viewed from a spot on the slopes of... [read more...]



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