Browsing the blog archives for January, 2010.

The Cloud Mystery

science

Various factors affect the average temperature of the Earth’s atmosphere. Other things being equal, when the earth is closer to the Sun, or when the Sun radiates more energy, then the atmosphere is warmer.

The Cloud Mystery is a documentary that explains another factor in average atmospheric temperatures: cloud coverage. Other things being equal, when there are more clouds the atmosphere is cooler. This is because clouds reflect the Sun’s radiation back into space.

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