Lecture 03

Lecture 03 - Lecture 3 Global Heat Budget There is normally...

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Lecture 3: Global Heat Budget There is normally a balance between sunlight heating the Earth and excess heat leaving the Earth. Without this balance, the Earth either burns up or freezes.
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Atmospheric Structure
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Atmospheric Pressure QuickTimeª and a TIFF (Uncompressed) decompressor are needed to see this picture. The atmospheric pressure at the Earth’ surface (sea level) is normally 1 bar or 1000 millibars (mb). The pressure at the top of the Troposphere is ~200 mb and the pressure at the top of the Stratosphere is ~1 mb. Most of the mass in the atmosphere resides in the Troposphere.
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Global Heat Budget The primary source of heat energy to drive the Earth’s climate engine (atmospheric and oceanic circulation are critical components) is solar insolation (short wavelength radiation) This input energy must be balanced by energy (long-wavelength radiation) leaving Earth or the Earth will continue to heat up Part of the heat budget is temporarily stored in the atmosphere - this sets the overall atmospheric temperature
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QuickTimeª and a
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Lecture 03 - Lecture 3 Global Heat Budget There is normally...

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