Cirrus Clouds

 


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Cirrus Clouds
Darren Dowling

Clouds

Cirrus

Cirrus is formed at higher levels. Although these clouds look windswept they change their shape very slowly by comparision with water clouds. Below is a wave cloud. In the distance is a more continuous layer of fibrous ice cloud called cirrostratus.

Clouds

Cirrus - Ice Clouds

On the left is feather or leaf like cirrus. On the right is lines of cirrus along the wind. Across these and at a lower level are striations across the direction of the wind.

Clouds

Contrails

Contrails (aircraft condensation trails) may be spread over the sky to form a layer of artificial cirrus. Below, dust rising from a power station can be seen showing the artificial thermals.

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