Cumulus cloud. A bank of cumulus clouds with typical "cotton wool" appearance. Cumulus clouds have rounded tops and flat bases. The name cumulus is derived from the latin for heap. Rain associa- ted cumulus,cumulus congestus & pyrocumulus are generally deep and dark in appearance from the ground,although not rising as high as cumulonimbus clouds. Cumulus may be formed at a frontal system boundary or as a result of thermal cell activity,with a low-altitude cloud base at between 300 and 1,000 metres (1,000 and 3,000 feet). The depth varies generally between 500 and 1,500 metres (1,500 feet and 5,000 feet) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Tompkinson, Geoff |
Taille de l’image : | 5091 px × 3449 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |