http://news.nationalgeographic.com/news/2009/06/photogalleries/new-cloud-pictures/
http://www.meteorologynews.com/2009/06/06/new-cloud-type-discovered-undulus-asperatus/
Gavin Pretor -Pinney, Put the name of Undulatus/Undulus Asperatus forward as a new cloud specie in 2009 it now has official recognition as such
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