3.2. Derivations and Definitions

Try these first

1. 1.

   Define advection.

   Hint

   Think about how wind carries leaves.

2. 2.

   What does mixing height refer to?

   Hint

   Consider where things start to mix in a pot of soup.

3. 3.

   What is the adiabatic lapse rate?

   • -0.0098 °C/m
   • -0.5 °C/m
   • -1 °C/m

   Hint

   Recall the value often used in meteorology.

4. 4.

   True or False: Atmospheric stability influences pollutant dispersion.

   • True
   • False

   Hint

   Consider how air movement works.

5. 5.

   If a pollutant source emits at 200 m above ground and the mixing height is 500 m, describe how you would expect the pollutant dispersion to behave.

   Hint

   Consider the role of the mixing height in limiting vertical movement.

6. 6.

   Using the provided lapse rate, calculate the temperature drop from 25 °C to an altitude of 1500 meters. What implications does this have for air stability?

   Hint

   Use the formula: ΔT = lapse rate x height.