Twelve "new" types of cloud - including the rare, wave-like asperitas cloud - have been recognised for the first time by the International Cloud Atlas...
So, how many for Terragen 4.1? Or will you hold out for 4.2?
http://www.bbc.co.uk/news/science-environment-39351843
Wow pretty cool article.
http://www.popsci.com/theres-new-species-cloud-celebrate-with-some-pretty-pictures
https://www.wmocloudatlas.org/cloud-classification-aids-cl-cm-ch.html