Consider a box model for an air shed over a city that is 1 X 105 m on a side, with a height of 1200 m induced by a temperature inversion. Winds with no SO2 blow at 4 m/s agains one side of the box. SO2 is emitted in the box at the rate of 20 kg/s.
(a) If SO2 is considered conservative, estimate the steady state concentration in the airshed.
(b) Assuming that SO2 emissions only occur on weekdays. If emission stop at 5 pm on Friday, estimate the SO2 concentration at midnight.
(c) If SO2 emissions begin again on Monday morning at 8 am, what would the concentration be by 5 pm?

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a The steady state concentration in the airshed would be 200 ppm To find the concentration you need to know the rate at which SO2 is being emitted int... View the full answer