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Since I use OTHER as a pollutant ID, are there some parameters I could specify in order to get better results for dispersion of substance I am trying to model? eg. molecular weight or density?

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The POLLUTID key is used to specify some regular options.

Some examples:

  • PM2.5 can only evaluate averages greater than 24 hours (if you try to generate hourly averages it throws an error).
  • NO2 forces the use of options to simulate the conversion of NOx to NO2.
  • SO2 triggers the use of a 4-hour half-life for SO2 decay in urban zones.

All pollutants (gases and particles) are treated similarly, regardless of their weight or molecular density.

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