Numerical $4\mathrm{.}4$

Consider a stack with effective height $100m,$ emitting $S{O}_2$ at

the rate of $2{10}^8\frac{g}{s}.$ Windspeed at $10m$ is $5\mathrm{.}5\frac{m}{s},$ and at

$100m,$ it is $10\frac{m}{s}.$ It is a clear summer day with the sun nearly

overhead and an inversion layer starting at $300m.$ Estimate the

ground$-$level concentration at a distance downwind twice that

where reflection begins to occur from the inversion.Consider a stack with effective height $100$ m$,$ emitting SO$2$ at

the rate of $2\backslash$times $108\backslash$mu g$/$s$.$ Windspeed at $10$ m is $5\mathrm{.}5$ m$/$s$,$ and at

$100$ m$,$ it is $10$ m$/$s$.$ It is a clear summer day with the sun nearly

overhead and an inversion layer starting at $300$ m$.$ Estimate the

ground$-$level concentration at a distance downwind twice that

where reflection begins to occur from the inversion.