Cumulonimbus Cb

This is the largest kind of cloud, like an icecream castle or a vast cauliflower, capped by a sideways extension, the anvil. The usual great extent of the cloud's growth is caused by deep convective instability within most of the troposphere (Section 7.4). A cumulonimbus cloud is typically higher than 5 km, and often reaches the tropopause, helping define it. The depth of the cloud increases its albedo, so that it has a blinding whiteness from above and appears very dark from below.

There are vigorous updraughts within each cloud, with a speed which is typically around 5 m/s but can be over 15 m/s, implying travel from cloud base to cloud top in less than 15 minutes.

In the extreme, there have been updraughts of 60 m/s, surrounded by downdraughts of 35 m/s. The commotion leads to thunderstorms, lightning and rain (Chapters 9 and 10).

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Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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