|Worksheet #23, ATOC 3600, November 16, 2000
1. Do volcanoes lead to climate warming or cooling? Why do some pollutants in the atmosphere tend to warm climate while others tend to cool climate?
2. What processes determine the magnitude of temperature shifts in climate
associated with alterations of the Earth's orbit. Does the change in solar
insolation at the top of atmosphere necessarily correspond strongly to
the change in Earth's temperature? Why or why not?
3. Suppose the extent of the ice caps increases by a factor of 2 during
the Ice Ages which in turn results in a globally averaged cooling of 10
W m-2. How rapidly will the atmosphere and surface oceans cool
if half of the cooling acts on the atmosphere and half of the cooling acts
on the surface oceans? The surface area of the globe is 1.27 x 1014
4. Derive the relationship between surface temperature and average atmospheric
temperature for a single layer atmosphere of emissivity, e. Use the fact
that the longwave radiation emitted by the atmosphere is equal to the longwave
radiation it absorbs from surface emissions.