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1) (a) Calculate the equivalent blackbody temperature of the earth under radiative equilibrium, if the irradiance of the solar radiation incident upon the earth is 30% less than today's value (1361 W m-2), as it is hypothesized to have been early in Solar System history. Use today's albedo of 0.3. (b) Calculate the equivalent blackbody temperature of the earth under radiative equilibrium, if the earth's albedo is changed to 0.05 which is the albedo of ocean areas without clouds (use today's solar irradiance).How much solar irradiance is there in a day? Again according to NASA, the worldwide Boby Noon daily average value of solar irradiance across the whole planet over one day is approximately equal to 5.0 kWh/m or 5 peak sun hours (PSH). 2 4 5 4 7 0 9 141 12 13 4 15 16 17 14 19 202 https://www.alternative-energy-tutorials.com > ... Solar Irradiance and Solar Irradiation - An Overview