Question: 2. (9 points) Radiative balance and feedbacks 1) (6 points) Mercury and Venus are 5.79x107km and 1.08*108 km away from the Sun, respectively. The albedo

 2. (9 points) Radiative balance and feedbacks 1) (6 points) Mercury

2. (9 points) Radiative balance and feedbacks 1) (6 points) Mercury and Venus are 5.79x107km and 1.08*108 km away from the Sun, respectively. The albedo of Mercury and Venus are 0.12 and 0.75, respectively. What are the effective temperatures of Mercury and Venus assuming energy balance and no atmosphere? Assume the temperature of the Sun is 5778 K and the radius of the Sun is 7x10 km. 5 2) (3 points) Mercury has virtually no atmosphere while Venus' atmosphere consists mainly of CO2 (96.5%). The greenhouse effect makes Venus' surface temperature to be 735 K. Is the Venus' surface temperature higher or lower than the Mercury's surface temperature? On Venus' surface, what is the ratio of longwave energy from the atmosphere over the total (shortwave + longwave) energy absorbed

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