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Calculating evapotranspiration using the FAO Penman-Monteith method

Evapotranspiration from snow-free surfaces is simulated using the FAO Penman-Monteith approach (Allen et al. 1998). It uses soil and land cover data which both have to provided as grid input files (see Spatial Input data).

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    enabled: true
    min_crop_coefficient: 0.175
    grass_albedo: 0.23
    grass_emissivity: 0.985
    sealed_albedo: 0.4
    sealed_emissivity: 0.92
    mean_wind_speed: 2.
    mean_min_humidity: 45.
    surface_soil_layer_evaporation_depth: 0.125