Figure 2. Solar radiation in the eastern Pacific.

Solar radiation at the equator averaged over 120W-90W. Black curve is radiation calculated from two solar harmonics as given in Reed (JPO, 1977) minus 50 W/m2 (scale at left). Red curve is the net solar radiation after taking into account the reflection and absorption by clouds, according to the formula given (also due to Reed, 1977). The cloud fraction used for this purpose is from the ISCCP C2 dataset shown by the green curve (scale at right).
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