Question 2 (25 marks) a. Given the following temperature profiles, determine whether the atmosphere is unstable, neutral or stable. Show all work and explain choices. [6] b. Determine the atmospheric stability category of the following observations [8] (i) Clear summer afternoon at 1pm; wind speed 1.6m/s (ii) Overcast summer night at 1:30 am; windspeed of 2.1 m/s (iii) Clear winter morning at 9:30 am; wind speed 6.6 m/s (iv) Thinly overcast winter night at 8pm; wind speed at 2.4m/s c. A power plant in a nearby town is burning coal. It is a cold clear December morning at 8 am with a windspeed of 2.6m/s. An inversion layer exists and it's base height is 697m. The effective stack height is 30m. Calculate the distance downwind at which the plume released will reach the inversion layer and begin to mix downward. State all assumptions made. [7] d. What plume types (shapes) might you expect from the stack mentioned in problem 2 (c)? [4]