Cumulus clouds. View of the tops of cumulus clouds. Cumulus clouds typically occur under 2000 metres altitude. They form from water vapour in rising columns of air which condenses as it cools. They are shaped like a vertical heap with cauliflower-like heads,and are between 500 and 1500 metres tall. Cumulus clouds often form at cold fronts where the advancing,cool air forces warm air upwards | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Svensson, Kaj R. |
Taille de l’image : | 5357 px × 3558 px |
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Property Release : | Non requis |
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