Cirrocumulus clouds. Sunset sky filled with groups of small,cirrocumulus cloudlets. Cirrocumulus clouds form at an altitude of 5000- 6000 metres and above and are composed largely of ice crystals. They may form in lines,groups or ripples. The effect is caused because of atmospheric instability which allows rising air currents to create the cloudlets and descending currents to clear spaces between them. The presence of cirrocumulus clouds indicates the approach of a frontal system and changing weather | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Craddock, Tony |
Taille de l’image : | 3602 px × 2480 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |