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kottke.org posts about clouds

Meet this season’s hot new clouds

posted by Jason Kottke   Mar 29, 2017

New clouds

New clouds

For the first time in 30 years, the world’s cloud authority has classified a dozen new types of cloud. You can find them in the International Cloud Atlas, published by the World Meteorological Organization.

The existing classifications have been reviewed and all have been retained. Several new, formal cloud classifications have been introduced. These include one new species (volutus), five new supplementary features (asperitas, cauda, cavum, fluctus and murus), and one new accessory cloud (flumen). The species floccus has been formally recognized as being able to occur in association with stratocumulus. The separate section on Special Clouds has been removed, and the cloud and meteor types previously discussed within this section have been integrated into the cloud classification scheme as cataractagenitus, flammagenitus, homogenitus, silvagenitus, and homomutatus.

The cloud in the second photo is a cavum cloud, which is not so much a cloud itself as a hole in a altocumulus or cirrocumulus cloud. The cloud in the top photo, the one that looks like a van Gogh painting, is an asperitas (formerly known as undulatus asperatus). The asperitas is best seen in motion:

We Work Remotely

Clouds crashing in the sky

posted by Jason Kottke   Sep 26, 2014

There’s an incredible 16-second sequence in this video of clouds, starting at around 10 seconds in. It looks as though the sky is a roiling ocean wave about to crash on the beach. I’ve watched it approximately 90 times so far today.

It’s worth making the video fullscreen and pumping it up to the max quality (2160p!) to see it properly. (via colossal)

Space photos

posted by Jason Kottke   Jun 10, 2008

Beautiful photos of the Space Shuttle lifting off and of earth from space. Check out the cloud wake and the thunderheads.

Noctilucent clouds (really high whispy clouds) were

posted by Jason Kottke   May 01, 2007

Noctilucent clouds (really high whispy clouds) were so common where I grew up in WI that I thought they were normal. Turns out they only appear in higher latitudes, at least until recently when global warming has caused them to appear more frequently and further south.