Global energy balance SPACE

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Presentation transcript:

Global energy balance 100 100 6 20 4 30 16 19 3 51 51 SPACE Incoming solar radiation 100 100 Reflected solar radiation 6 20 4 = 30 ATMOSPHERE Back-scattered by air 16 Absorbed by H2O, dust, O3 Reflected by clouds 19 = 3 Absorbed in clouds Reflected by surface 51 51 OCEAN & LAND Based on Wallace and Hobbs, p. 321

Net emission of infrared radiation from surface Global energy balance SPACE 70 Outgoing infrared radiation 100 30 6 38 26 ATMOSPHERE Emission by clouds Absorbed by H2O, CO2 Net emission by H2O, CO2 19 15 70 Net emission of infrared radiation from surface Sensible heat flux Latent heat flux 51 21 7 23 OCEAN & LAND Based on Wallace and Hobbs, p. 321

Greenhouse effect & global warming The “greenhouse effect” & global warming are not the same thing. Global warming refers to a rise in the temperature of the surface of the earth An increase in the concentration of greenhouse gases leads to an increase in the the magnitude of the greenhouse effect. (Called enhanced greenhouse effect) This results in global warming