Cumulus congestus clouds. Cumulus clouds often form at cold fronts where the advancing, cool air forces warm air upwards. They typically occur at under 2000 metres altitude. The congestus variety (also known as towering cumulus) can rise to great heights and can develop into cumulonimbus clouds (thunderheads). Photographed in the late afternoon, in summer, in southern England in the UK. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / STEPHEN BURT |
Taille de l’image : | 3648 px × 5472 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |