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> | : ''Δw = min( WL<sub>surface</sub> , Δt * E<sub>weather</sub> * E<sub>gridcell</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 [[ | * 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. | ||
{{Template:WaterOverlay_nav}} | {{Template:WaterOverlay_nav}} | ||
Revision as of 12:27, 10 April 2019
Surface evaporation is calculated per cell.
- Δw = min( WLsurface , Δt * Eweather * Egridcell )
where:
- Δw = The amount of evaporation which takes place.
- Δt = Computational timestep.
- Wsurface = The amount of water (the water column) on the surface.
- Eweather = The evaporation rate of the weather.
- Eoverlay = The grid cell's Water evaporation factor. See Surface evaporation model to find out how this value is selected.