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  Tottenham Clouds
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International Cloud Atlas

Open access to the skies for everyone!

The World Meteorological Day has launched an online International Cloud Atlas.  The Cloud Atlas describes the classification system for clouds and meteorological phenomena. It is the first update for decades and for the first time the ICA has been configured as a website for electronic access.

The rare Asperitas cloud is a new classification of cloud, with a chaotic, turbulent appearance, that was proposed by the Cloud Appreciation Society back in 2008, based on photographs sent to CAS from members all around the world.

Asperitas becomes the first addition of a new recognisable term since 1953. In addition several other supplementary features of clouds have also been added including cavum, cauda (known as a tail cloud), fluctus and murus (known as a wall cloud).


Visit the International Cloud Atlas for photographs, definitions and descriptions of clouds and other weather phenomena

Header: The newly classified Asperitas cloud spotted over Burnie, Tasmania, Australia by Gary McArthur
(Cloud Appreciation Society member 5353)

Picture
Picture
Picture
Picture
  • Tottenham Clouds
    • Luke Howard 250 anniversary >
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    • Carol Ann Duffy
    • Goethe discovers Luke Howard >
      • Goethe's request
      • Goethe: In honour of Mr Howard
    • JMW Turner
    • John Constable
    • Percy Bysshe Shelley