Total Atmospheré

Visible Radiation

Atmospheric Window for Infrared Radiation

Wavelength (microns)

O 2 andO 3

FIGURE 8.8 (a) Relative intensities of radiating wavelengths emitted from the Sun (5780°K) and Earth (255°K) based on their absolute temperatures (Box 8.1). (b) Absorptivity of different wavelengths across the electromagnetic spectrum (Fig. 8.7) by major greenhouse gases in the troposphere (Fig. 1.1b), showing the "windows" for incoming solar shortwave radiation and outgoing terrestrial infrared radiation. Modified from Lutgens and Tarbuck (1998).

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