r.sun
r.sun - Solar irradiance and irradiation model.
Raster (r.*)
ParameterRaster|elevin|Name of the input elevation raster map [meters]|False
ParameterRaster|aspin|Name of the input aspect map (terrain aspect or azimuth of the solar panel) [decimal degrees]|False
ParameterNumber|aspect|A single value of the orientation (aspect), 270 is south|None|None|270.0
ParameterRaster|slopein|Name of the input slope raster map (terrain slope or solar panel inclination) [decimal degrees]|False
ParameterNumber|slope|A single value of inclination (slope)|None|None|0.0
ParameterRaster|linkein|Name of the Linke atmospheric turbidity coefficient input raster map [-]|False
ParameterNumber|lin|A single value of the Linke atmospheric turbidity coefficient [-]|None|None|3.0
ParameterRaster|albedo|Name of the ground albedo coefficient input raster map [-]|False
ParameterNumber|alb|A single value of the ground albedo coefficient [-]|None|None|0.2
ParameterRaster|latin|Name of input raster map containing latitudes [decimal degrees]|False
ParameterRaster|longin|Name of input raster map containing longitudes [decimal degrees]|False
ParameterRaster|coefbh|Name of real-sky beam radiation coefficient input raster map [-]|False
ParameterRaster|coefdh|Name of real-sky diffuse radiation coefficient input raster map [-]|False
ParameterRaster|horizon|The horizon information input map prefix|False
ParameterNumber|horizonstep|Angle step size for multidirectional horizon [degrees]|None|None|0.0
ParameterNumber|day|No. of day of the year (1-365)|None|None|0.0
ParameterNumber|step|Time step when computing all-day radiation sums [decimal hours]|None|None|0.5
ParameterNumber|declin|Declination value (overriding the internally computed value) [radians]|None|None|0.0
ParameterNumber|time|Local (solar) time (to be set for mode 1 only) [decimal hours]|None|None|0.0
ParameterNumber|dist|Sampling distance step coefficient (0.5-1.5)|None|None|1.0
ParameterNumber|numpartitions|Read the input files in this number of chunks|None|None|1.0
ParameterNumber|civiltime|Civil time zone value, if none, the time will be local solar time|None|None|0.0
ParameterBoolean|-s|Incorporate the shadowing effect of terrain|False
ParameterBoolean|-m|Use the low-memory version of the program|False
OutputRaster|incidout|Output incidence angle raster map (mode 1 only)
OutputRaster|beam_rad|Output beam irradiance [W.m-2] (mode 1) or irradiation raster map [Wh.m-2.day-1] (mode 2)
OutputRaster|insol_time|Output insolation time raster map [h] (mode 2 only)
OutputRaster|diff_rad|Output diffuse irradiance [W.m-2] (mode 1) or irradiation raster map [Wh.m-2.day-1] (mode 2)
OutputRaster|refl_rad|Output ground reflected irradiance [W.m-2] (mode 1) or irradiation raster map [Wh.m-2.day-1] (mode 2)
OutputRaster|glob_rad|Output global (total) irradiance/irradiation [W.m-2] (mode 1) or irradiance/irradiation raster map [Wh.m-2.day-1] (mode 2)
