Learn how clouds are classified and analyzed in this video excerpt from NOVA's Cloud Lab. Clouds are categorized according to two main characteristics: height in the atmosphere (low, middle, or high) and shape (nimbus, stratus, cumulus, or cirrus). Cloud types are named using combinations of height and shape characteristics and provide information about how clouds form and behave. For example, the height at which a cloud forms influences its composition, while its shape indicates atmospheric conditions that can help forecast the weather. Scientists are studying complicated relationships between clouds types and climate change.

This video is available in both English and Spanish audio, along with corresponding closed captions.