Question

The down-wind transport of air pollutants emitted from a point source is described by Gaussian dispersion model developed by Turner in 1967. In the following four comparisons of the concentration of the pollutant on the ground as a function of the down-wind distance from the point source, identify the nature of the change in one of the parameters. For all of these graphs, the concentrations were calculated for an atmosphere with no inversion layer present. The following two graphs of pollutant concentration versus distance x were calculated for emission rates of 100 g s?¹ and 200 g s?¹. Which is which? Identify which curve is which by writing the value of the emission rate the line following the legend labels A and B and explain your choice in 50 words or fewer. concentration x (g m?³) -B 0E+00 distance (m) The following two graphs of pollutant concentration versus distance x were calculated for wind speeds of 3 m s?¹ and 6 m s?¹ at the height of the effective stack height. The change in wind speed did affect the effective stack height or the stability class. Which is which? Identify which curve is which by writing the value of the wind speed on the line following the legend labels A and B and explain your choice in 50 words or fewer. 7.0E-04 concentration x (g m?³) distance (m) --A -B

          The down-wind transport of air pollutants emitted from a point source is described by Gaussian
dispersion model developed by Turner in 1967. In the following four comparisons of the concentration of the
pollutant on the ground as a function of the down-wind distance from the point source, identify the nature of the
change in one of the parameters. For all of these graphs, the concentrations were calculated for an atmosphere with
no inversion layer present.
The following two graphs of pollutant concentration versus distance x were calculated for
emission rates of 100 g s?¹ and 200 g s?¹. Which is which? Identify which curve is which by writing the value of the
emission rate the line following the legend labels A and B and explain your choice in 50 words or fewer.
concentration x (g m?³)
-B
0E+00
distance (m)
The following two graphs of pollutant concentration versus distance x were calculated for wind
speeds of 3 m s?¹ and 6 m s?¹ at the height of the effective stack height. The change in wind speed did affect the
effective stack height or the stability class. Which is which? Identify which curve is which by writing the value of the
wind speed on the line following the legend labels A and B and explain your choice in 50 words or fewer.
7.0E-04
concentration x (g m?³)
distance (m)
--A
-B

The down-wind transport of air pollutants emitted from a point source is described by Gaussian
dispersion model developed by Turner in 1967. In the following four comparisons of the concentration of the
pollutant on the ground as a function of the down-wind distance from the point source, identify the nature of the
change in one of the parameters. For all of these graphs, the concentrations were calculated for an atmosphere with
no inversion layer present.
The following two graphs of pollutant concentration versus distance x were calculated for
emission rates of 100 g s?¹ and 200 g s?¹. Which is which? Identify which curve is which by writing the value of the
emission rate the line following the legend labels A and B and explain your choice in 50 words or fewer.
concentration x (g m?³)
-B
0E+00
distance (m)
The following two graphs of pollutant concentration versus distance x were calculated for wind
speeds of 3 m s?¹ and 6 m s?¹ at the height of the effective stack height. The change in wind speed did affect the
effective stack height or the stability class. Which is which? Identify which curve is which by writing the value of the
wind speed on the line following the legend labels A and B and explain your choice in 50 words or fewer.
7.0E-04
concentration x (g m?³)
distance (m)
–A
-B

Added by Jesse M.

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