1. The sunset scene shows a classic cumulonimbus cloud formation.

2. The natural precipitation and cloud seeding of cumulonimbus clouds with warm cloud base in Fujian are simulated by using a dual-parameter cumulonimbus cloud model.

3. The decay of a single cell cumulonimbus cloud is rapid and seldom exists for more than half an hour.

4. A cumulonimbus cloud rises high into the sky and usually produces storms.

5. A large dark cloud charged with electricity and producing thunder and lightning; a cumulonimbus cloud.

6. The bright lights of Tucson, Arizona, are more than matched by a flash of lightning far above the city skyline. The sunset scene shows a classic cumulonimbus cloud formation.

7. A series of numerical experiments have been done to test the seeding effect of artificial icecristals or raindrop embryos using a one-dimentional time dependent cumulonimbus cloud model.