Cirrus Clouds

Cirrus clouds are a type of high-altitude cloud that are thin, wispy, and often have a feathery appearance. They are composed of ice crystals and are typically found at altitudes above 20,000 feet (6,000 meters).

Formation of Cirrus Clouds

Cirrus clouds form when water vapor freezes into ice crystals at high altitudes. These ice crystals then cluster together to form the thin, wispy strands that are characteristic of cirrus clouds.

Characteristics of Cirrus Clouds

• Thin and wispy in appearance
• Often found at high altitudes
• Composed of ice crystals
• May indicate fair weather or the approach of a warm front

Importance of Cirrus Clouds

Cirrus clouds play a role in the Earth's energy balance by reflecting sunlight and trapping heat in the atmosphere. They can also indicate changes in the weather, with their presence often signaling the approach of a warm front.

Study Guide

Here are some key points to remember about cirrus clouds:

1. What are cirrus clouds made of?
2. Where are cirrus clouds typically found?
3. What do cirrus clouds indicate about the weather?
4. How do cirrus clouds form?

Be sure to study the characteristics, formation, and significance of cirrus clouds to gain a comprehensive understanding of this type of cloud.