Fig. 4.1-2

Annual mean (Feb. 1985 -- Jan. 1989) meridional distribution of earth radiation balance (Unit: W / m²).

• Curve a: Solar radiation incoming to `the top of the atmosphere' (calculated).
• b: Solar radiation absorbed by the earth (based on satellite observation of ERBE project).
• c: Terrestrial radiation emitted by the earth (similar to `b').
• d: Net radiation (b - c).