Cumulus clouds. Young cumulus clouds under a blue sky. Cumulus clouds form at low altitudes (under 2000 metres) from water droplets that condense as columns of moist air rise. They evolve into vert- ical heaps with flat bases and brilliant white "cauliflower heads". These usually have a depth of between 500 and 1500m. Some cumulus clouds develop into huge,dark towering masses that can cause rain. These are typical fair-weather cumulus clouds: shallow and non rain-bearing | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Craddock, Tony |
Taille de l’image : | 5020 px × 3508 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |