i.evapo.pm Computes potential evapotranspiration calculation with hourly Penman-Monteith. Imagery (i.*) ParameterRaster|elevation|Name of input elevation raster map [m a.s.l.]|False ParameterRaster|temperature|Name of input temperature raster map [C]|False ParameterRaster|relativehumidity|Name of input relative humidity raster map [%]|False ParameterRaster|windspeed|Name of input wind speed raster map [m/s]|False ParameterRaster|netradiation|Name of input net solar radiation raster map [MJ/m2/h]|False ParameterRaster|cropheight|Name of input crop height raster map [m]|False *ParameterBoolean|-z|Set negative ETa to zero|False *ParameterBoolean|-n|Use Night-time|False OutputRaster|output|Evapotranspiration