• observable variable
  • advection
  • concentration of the chemical
  • dry gaseous deposition rate
  • dry particle deposition rate
  • inhalation dose
  • photo degradation
  • total deposition
  • wet gaseous deposition
  • wet particle deposition
• internal variable
  • adsorbed fraction
  • dry gaseous deposition velocity
  • partition coefficient gas/particel
  • total deposition velocity