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Unformatted text preview: absorbs about half of the incoming solar energy. Clouds and the atmosphere absorb a much smaller amount. The earths surface, clouds, and the atmosphere then re-emit part of this absorbed solar energy as heat. The infrared channel on the satellite senses this re-emitted radiation at wavelengths between 10.5 and 12.6 micrometers. The lowest clouds (e.g. fog) are often indistinguishable from the land/sea. The main advantage of infrared over visable is that images can be produced at night, allowing a continuous sequence of weather to be studied....
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- Summer '08