Question

Estimate of the earth's annual and global mean energy balance; kiehl and trenberth

Answer 1

Answer:

Estimate of the Earth's annual and global mean energy balance. Over the long term, the amount of incoming solar radiation absorbed by the Earth and atmosphere is balanced by the Earth and atmosphere releasing the same amount of outgoing longwave radiation to space. About half of the incoming solar radiation is absorbed by the Earth's surface. This energy is transferred to the atmosphere by warming the air in contact with the surface (thermals) through evapotranspiration and longwave radiation that is absorbed by clouds and greenhouse gases. The atmosphere in turn radiates longwave energy back to Earth as well as out to space (Kiehl and Trenberth 1997; Le Treut et al. 2007) .

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