1. Assuming the Sun is a black body and has a temperature of 6000 K, how much energy is it emitting?
2. Assuming the Earth is a black body and has a temperature of 300 K, how much energy is it emitting?
3. What is the peak energy emission wavelength of the Sun assuming a temperature of 6000 K? What part of the electromagnetic spectrum is this in?
4. What is the peak energy emission wavelength of the Earth assuming a temperature of 300 K? What part of the electromagnetic spectrum is this in?
5. Assuming that a beaker of water is boiling and has a emissivity of 0.95 how much energy is it emitting? What is the peak energy emission wavelength? What part of the electromagnetic spectrum is this in?
6. If the incoming solar radiation
on a clear summer's day is 1000 W m-2 and the
albedo over the grass surface is 0.26, the observed sky temperature is
-40 deg C and the surface temperature is 25 deg C what is
a) Net shortwave radiation?
b) Net Longwave radiation?
c) Net all-wave radiation?
Assume an emissivity of 1 for the sky and 0.95 for the grass.
7. If it is a cloudy day in the winter with snow on the ground what would be the net all wave radiation under the following conditions: the albedo is 0.6 (the snow has been around for a few days and got dirty) and outgoing shortwave radiation is 300 W m-2, the surface temperature is 0 deg C and the sky temperature is -35 deg C. Assume the snow is a black body and the cloudy sky emissivity is 0.99.