Question: Assume that ice albedo feedback gives a feedback parameter = 0.5 W/m 2 C. Estimate the corresponding addition to the change in temperature

Assume that ice albedo feedback gives a feedback parameter λ = 0.5 W/m² ^◦C. Estimate the corresponding addition to the change in temperature under adoubling of atmospheric CO₂ in the absence of other feedbacks. Assume that water vapor and the lapse rate feedback together contribute a feedback parameter λ = 1 W/m^{2 ◦}C. Estimate the temperature change with this feedback alone, and compare to the combined temperature change when both feedbacks are included.

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