In the graph from the class handout the inflow of energy from the sun is given as a constant 236 watts per meter squared. To get this figure we used L(1 – a) × 236 W/m², where L = 1350 W/m²is the solar constant, and a = 0.3 is the Earth's albedo (meaning that 30% of the Sun's energy is reflected back into space). The 1/4 comes from averaging the arriving solar energy over the whole Earth (the surface area of the Earth is 4 times the area of the "disk of energy" hitting the Earth.) Using these ideas estimate the inflow of energy to a planet if the solar constant is 647 watts per meter squared and the planet's albedo is 0.5. Round your answer to the near 10 watts per square meter.

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In the graph from the class handout the inflow of energy from the
sun is given as a constant 236 watts per meter squared. To get this
figure we used
L(1 – a) × 236 W/m²,
where L = 1350 W/m²is the solar constant, and a = 0.3 is the
Earth's albedo (meaning that 30% of the Sun's energy is reflected
back into space). The 1/4 comes from averaging the arriving solar
energy over the whole Earth (the surface area of the Earth is 4 times
the area of the "disk of energy" hitting the Earth.)
Using these ideas estimate the inflow of energy to a planet if the
solar constant is 647 watts per meter squared and the planet's
albedo is 0.5.
Round your answer to the near 10 watts per square meter.
Transcribed Image Text:In the graph from the class handout the inflow of energy from the sun is given as a constant 236 watts per meter squared. To get this figure we used L(1 – a) × 236 W/m², where L = 1350 W/m²is the solar constant, and a = 0.3 is the Earth's albedo (meaning that 30% of the Sun's energy is reflected back into space). The 1/4 comes from averaging the arriving solar energy over the whole Earth (the surface area of the Earth is 4 times the area of the "disk of energy" hitting the Earth.) Using these ideas estimate the inflow of energy to a planet if the solar constant is 647 watts per meter squared and the planet's albedo is 0.5. Round your answer to the near 10 watts per square meter.
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