Input Data

Files for this project are found in ~p6720/examples/air_quality.

You are provided with files of input data to run with the model. The data describe the topography of the valley, define the dispersion constants, and provide a mock 24 hour weather and pollutant emission scenario. These data are only representative for use in experimenting with the model and so are only approximations to reality. Included in the dataset is a point-source scenario to help test your code and understand the way the mathematical model works.

You are also provided a header file ppmrgb.h for generating gray-scale images in ppm format showing the pollution concentration. The utility xv can convert ppm files to eps files for inclusion in your report.

The README file explains the data format.

At a minimum you should generate a series of figures showing the CO concentration resulting from the test point source over several hours to validate your code and, of course, from one or more mock traffic/weather scenarios over a 4-day period. These scenarios generate quite a few files. So in your report be selective about the figures you show to support your discussion and conclustions. For every ``snapshot'' figure that you include in your report, please provide a caption and an explanation in the body of your report, saying at what time in relation to the traffic/weather scenario the snapshot was taken.

For a reference point the US Environmental Protection Agency (EPA) air quality standards for CO are 10 mg/m$^3$ ($10^{-5}$kg/m$^3$) averaged over any eight hour period and 40 mg/m$^3$ ( $4\times 10^{-5}$kg/m$^3$) averaged over any one hour period. See if these standards are exceeded.