The air above the city of Baton Rouge, Louisiana, can be considered to be well-mixed to a depth of 1 km over an area 10 × 10 km2. CO is being emitted by both stationary and mobile sources within the city at a rate of 10 kg/s. Assume CO is a conservative pollutant.
(a) For a wind velocity of 5 m/s in the city, what is the steady-state concentration of CO in the city?
(b) If after attaining steady state, the wind velocity decreases to 1.5 m/s, what is the new steady-state concentration?