New Kind of Cloud Added to the Cloud Atlas

Look! Up in the sky! It's a new kind of cloud

But what you're looking at is a unique and breathtaking meteorological phenomenon. And today, World Meteorological Day, it's being officially recognized: asperitas cloud. This is how the new edition of the International Cloud Atlas describes it, in almost poetic form: "Asperitas is characterized by localized waves in the cloud base, either smooth or dappled with smaller features, sometimes descending into sharp points, as if viewing a roughened sea surface from below."