Heat Transfer in the Atmosphere Essential Question: How is heat transferred in the atmosphere?

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Presentation transcript:

Heat Transfer in the Atmosphere Essential Question: How is heat transferred in the atmosphere?

How is our atmosphere heated? There are three ways heat is transferred in Earth’s atmosphere. Radiation, conduction, and convection

Where does most of Earth’s heat come from? Almost all of Earth’s energy comes from the sun. Energy from the sun travels to the Earth as radiation.

Radiation Heat transfer by electromagnetic waves.

Wavelengths shorter than visible light are absorbed in the upper atmosphere. Solar radiation is absorbed by Earth’s surface or reflected back into the atmosphere (albedo).

What is conduction? Conduction is heat transfer through a material. The layer of air on Earth’s surface is heated by contact with earth.

What is convection? Convection is the movement of matter due to differences in density caused by temperature differences. Warm fluids rise, cool fluids sink.

What is Earth’s heat budget? The amount of energy entering the Earth via the sun is approximately the same as the amount of energy exiting the Earth.

What is the Greenhouse Effect? The greenhouse effect is the warming of Earth that occurs when carbon dioxide and water vapor in the air absorb radiation.

What happens to our heat budget if… We increase carbon dioxide in the atmosphere?