Surface evaporation formula (Water Overlay): Difference between revisions

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Surface evaporation is calculated per cell.
Surface evaporation is calculated per cell.
: ''Δw = min( WL<sub>surface</sub> , Δt * E<sub>weather</sub> * E<sub>gridcell</sub> )''
: ''Δw = min( WL<sub>surface</sub> , Δt * E<sub>weather</sub> * E<sub>overlay</sub> )''


where:
where:
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* W<sub>surface</sub> = The amount of water (the water column) on the surface.
* W<sub>surface</sub> = The amount of water (the water column) on the surface.
* E<sub>weather</sub> = The [[Water evaporation factor (Water Overlay)|evaporation rate]] of the [[Weather|weather]].
* E<sub>weather</sub> = The [[Water evaporation factor (Water Overlay)|evaporation rate]] of the [[Weather|weather]].
* E<sub>overlay</sub> = The grid cell's Water evaporation factor. See [[Evaporation model (Water Overlay)#Surface evaporation model|Surface evaporation model]] to find out how this value is selected.
* E<sub>overlay</sub> = The [[Surface water evaporation factor model attribute (Water Overlay)|SURFACE_WATER_EVAPORATION_FACTOR]].


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Revision as of 12:38, 10 April 2019

Surface evaporation is calculated per cell.

Δw = min( WLsurface , Δt * Eweather * Eoverlay )

where:

  • Δw = The amount of evaporation which takes place.
  • Δt = Computational timestep.

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