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Tracking Evaporative Loss From Standing Water. Liz Mitnick Fall 2013. Modeling Evaporation: Relating Evaporation Rate to Change in Volume. m ethod: ordinary differential equation discretization - dV / dt = surface area*k k includes: n et radiation change in energy storage of water

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modeling evaporation relating evaporation rate to change in volume
Modeling Evaporation: Relating Evaporation Rate to Change in Volume
  • method: ordinary differential equation discretization
  • -dV/dt= surface area*k
  • k includes:
    • net radiation
    • change in energy storage of water
    • latent heat of vaporization
    • specific heat of air and water
    • atmospheric pressure
    • temperature at water surface: changes with time of day (sine function– exaggerated amplitude to see “leveling off” of volume during cold temperatures)
    • temperature of air: changes with time of day
    • molecular weight ratio of water to dry air
    • saturation vapor pressure of air*