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Related to altocumulus: cirrocumulus, cirrostratus
aggregation of minute particles of water or ice suspended in the air. Formation of Clouds
Clouds are formed when air containing water vapor is cooled below a critical temperature called the dew point and the resulting moisture condenses into droplets on
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Elliptical globular cloud units occurring individually or in groups. They may have gray shading on their undersurface. Most individual clouds are frequently elongated elliptical or lenticular units and are distinguished from cumulus by their height and lack of vertical doming. Thin altocumulus clouds are represented on weather charts as .