08 Oct Carbon dioxide and water combined typically make up 1-3% of our atmosphere, and yet, we are constantly monitoring the atmospheric content of CO2 and H2O.
Air Quality Management
Carbon dioxide and water combined typically make up 1-3% of our atmosphere, and yet, we are constantly monitoring the atmospheric content of CO2 and H2O. Why? Explain the typical atmospheric concentration of these two gases and the reasons they vary in atmospheric content.
(2) With one exception, the relative concentrations of atmospheric gases do not change with height. Indicate this exception, its concentration patterns, and reasons why this is the case.
(3) The atmosphere is in constant motion. Why? What is the general pattern of airflow? Explain why there is this general pattern of airflow and why atmospheric gases don’t simply flow into outer space.
(4) The composition of the Earth’s atmosphere has changed in the past 200 years. What are/were the major changes in our atmospheric composition?
(5) Name the top five air pollutants we presently regulate. Is there a common source for these top five air pollutants? If so, what is it? What percentage of our atmospheric gases do these top five regulated gases make up?
(6) Identify what occurs to each of these molecules in our atmosphere. What process uses them up and what is the resulting molecule after the original gas has been transformed? Make sure that the molecule it is transformed into follows logically from the process that uses this molecule.
(7) Identify two factors that affect the lifetime of pollutants in the atmosphere, and explain how these two factors affect pollutant lifetime.
(8) When fossil fuel is burned, many different types of carbon-based molecules can be emitted. Of all carbon-based emissions, carbon dioxide is the best-case scenario given what will occur to the other carbon-based emissions. Explain why you agree or disagree with the previous statement and the consequence of this fact.
(9) The CAA dealt with both stratospheric and tropospheric ozone issues. Explain which sections address which issue and how these two issues are addressed.
(10) A colleague comments to you that the ozone hole must be getting worse since we are having so many ozone alert days. How would you gently correct this misconception of your colleague in relating ozone alert days with the ozone hole?
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