ESE315 Assignment 2

1. Mars is 2.3e8 km away from the Sun; its albedo is 0.15. Its only source of heat is solar radiation. (1) Calculate the effective temperature of Mars. (2) The temperature observed at the surface of Mars is 220 K. What do you conclude about the Martian atmosphere?
2. Jupiter is 7.8e8 km from the Sun. Its albedo is 0.73. (1) Calculate the effective temperature of Jupiter assuming that the Sun is the only energy source. (2) Observations indicate an effective temperature for Jupiter of 134 K. This temperature is maintained in part by heat from gravitational accretion and chemical reactions within the planet. How does the magnitude of Jupiter's internal heat source compare to the source from solar radiation?