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Managing Carbon Monoxide Pollution in Meteorological and Topographical Problem Areas (2003) / Chapter Skim
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Appendix C: A Simple Box Model with Recirculation
Pages 194-196

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From page 194...
... due to the wind carrying the contaminant (CO) in from outside and Moot is the mass flux out; c is the time dependent CO concentration (mass/volume)
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From page 195...
... c where the assumption that the box is well mixed leads to having the contaminant concentration leaving the box the same as that within it. Using the above two expressions for Min and Moot leads to the classical box model formulation for the evolution of pollutant concentration c, TIC UCb Uc E 1 dH~ At L :L 1,WH(~t)
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From page 196...
... application area, and means that it should not be used to estimate hot spot concentrations. Also, it assumes that none of the contaminant that leaves the box returns, except after being added to the background levels.
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Key Terms

  • box model
  • time dependent
  • mixing height
  • pollutant concentrations
  • background concentration

  • emission rate
  • classical box
  • dependent height
  • mass rate
  • model formulation

  • term causes
  • concentrations based
  • mass flow
  • dependent emission
  • tic ucb

  • contaminant concentration
  • mixed leads
  • expanding volume
  • wind velocity
  • vary significantly

  • wind speed
  • significantly spatially
  • height increases
  • pollutant concentration
  • moot leads

  • original box
  • total mass
  • simple box
  • concentration leaving
  • box depends


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