5.1. Defining New Parameters

Try these first

1. 1.

   What does the steady-state assumption imply about pollutant concentration?

   Hint

   Think about time and how it relates to concentration.

2. 2.

   What is a plume in environmental science?

   Hint

   Visualize how smoke rises from a chimney.

3. 3.

   What does the steady-state assumption imply about pollutant concentration?

   • It does not change with space
   • It does not change with time
   • It changes with wind speed

   Hint

   Focus on the time aspect rather than space.

4. 4.

   The Gaussian distribution shows that concentrations peak where?

   • At the edges of the plume
   • Above the plume center line
   • At the source of the pollutant

   Hint

   Visualize the bell-shaped curve.

5. 5.

   Evaluate how a decrease in emission rates affects the Gaussian model's predictions and the reliability of the steady-state assumption.

   Hint

   Consider how emission rates directly impact concentration calculations.

6. 6.

   Using hypothetical data, calculate the expected concentration at a point 100 meters downwind from a source with known emission rates and dispersion coefficients.

   Hint

   Remember the main formula and make sure to use the parameters properly.