Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
NAME
r.sun.daily - Runs r.sun for multiple days in loop (mode 2)
KEYWORDS
raster,
solar,
sun energy,
parallel
SYNOPSIS
r.sun.daily
r.sun.daily --help
r.sun.daily [-tpm] elevation=name [aspect=string] [slope=string] [linke=name] [linke_value=float] [albedo=name] [albedo_value=float] [lat=name] [long=name] [horizon_basename=basename] [horizon_step=stepsize] start_day=integer end_day=integer [day_step=integer] [step=float] [civil_time=float] [beam_rad=string] [diff_rad=string] [refl_rad=string] [glob_rad=string] [insol_time=string] [beam_rad_basename=string] [diff_rad_basename=string] [refl_rad_basename=string] [glob_rad_basename=string] [insol_time_basename=string] [solar_constant=float] [method=string] [nprocs=integer] [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- -t
- Register created series of output maps into temporal dataset
- Dataset name is the same as the base name for the output series of maps
- -p
- Do not incorporate the shadowing effect of terrain
- -m
- Use the low-memory version of the program
- --overwrite
- Allow output files to overwrite existing files
- --help
- Print usage summary
- --verbose
- Verbose module output
- --quiet
- Quiet module output
- --ui
- Force launching GUI dialog
Parameters:
- elevation=name [required]
- Name of the input elevation raster map [meters]
- aspect=string
- Name of the input aspect map (terrain aspect or azimuth of the solar panel) [decimal degrees]
- slope=string
- Name of the input slope raster map (terrain slope or solar panel inclination) [decimal degrees]
- linke=name
- Name of the Linke atmospheric turbidity coefficient input raster map [-]
- linke_value=float
- A single value of the Linke atmospheric turbidity coefficient [-]
- Options: 0.0-
- Default: 3.0
- albedo=name
- Name of the ground albedo coefficient input raster map [-]
- albedo_value=float
- A single value of the ground albedo coefficient [-]
- Options: 0.0-1.0
- Default: 0.2
- lat=name
- Name of input raster map containing latitudes (if projection undefined) [decimal degrees]
- long=name
- Name of input raster map containing longitudes (if projection undefined) [decimal degrees]
- horizon_basename=basename
- The horizon information input map basename
- horizon_step=stepsize
- Angle step size for multidirectional horizon [degrees]
- start_day=integer [required]
- Start day (of year) of interval
- Options: 1-365
- end_day=integer [required]
- End day (of year) of interval
- Options: 1-365
- day_step=integer
- Run r.sun for every n-th day [days]
- Options: 1-365
- Default: 1
- step=float
- Time step when computing all-day radiation [decimal hours]
- Default: 0.5
- civil_time=float
- Civil time zone value, if none, the time will be local solar time
- beam_rad=string
- Output beam irradiation raster map aggregated for the whole period of time [Wh.m-2.day-1]
- diff_rad=string
- Output diffuse irradiation raster map aggregated for the whole period of time [Wh.m-2.day-1]
- refl_rad=string
- Output ground reflected irradiation raster map aggregated for the whole period of time [Wh.m-2.day-1]
- glob_rad=string
- Output global (total) irradiance/irradiation raster map aggregated for the whole period of time [Wh.m-2.day-1]
- insol_time=string
- Output insolation time raster map aggregated for the whole period of time [h]
- beam_rad_basename=string
- Base name for output beam irradiation raster maps [Wh.m-2.day-1]
- Underscore and day number are added to the base name for daily maps
- diff_rad_basename=string
- Base name for output diffuse irradiation raster maps [Wh.m-2.day-1]
- Underscore and day number are added to the base name for daily maps
- refl_rad_basename=string
- Base name for output ground reflected irradiation raster maps [Wh.m-2.day-1]
- Underscore and day number are added to the base name for daily maps
- glob_rad_basename=string
- Base name for output global (total) irradiance/irradiation raster maps [Wh.m-2.day-1]
- Underscore and day number are added to the base name for daily maps
- insol_time_basename=string
- Base name for output insolation time raster map aggregated for the whole period of time [h]
- Underscore and day number are added to the base name for daily maps
- solar_constant=float
- Solar constant [W/m^2]
- If not specified, r.sun default will be used.
- method=string
- Method for daily maps aggregation
- Options: sum, average
- Default: sum
- nprocs=integer
- Number of r.sun processes to run in parallel
- Options: 1-
- Default: 1
r.sun.daily is a convenient script for running
r.sun for multiple days in a loop. It corresponds to mode 2
(aggregation mode, see r.sun
manual page).
There are two basic options:
- output series of maps (one for each day): options containing basename in their name
- output one map which is an aggregation of the intermediate maps
You can choose any combination of parameters: e.g. total map of diffuse radiance and
series of beam radiance maps.
Series of maps are (if flag
t is checked) registered
to space time raster dataset with relative time and point time (not interval time).
For GRASS 6, only timestamp is assigned.
g.region raster=elevation -p
r.sun.daily elevation=elevation start_day=30 end_day=40 \
beam_rad_basename=beam beam_rad=beam_sum nprocs=4 -t
# show information about newly created space time dataset
t.info beam
# show information about newly created beam_sum raster map
r.info beam
r.sun
r.sun.hourly in Addons
Vaclav Petras,
NCSU GeoForAll Lab,
Anna Petrasova,
NCSU GeoForAll Lab
SOURCE CODE
Available at:
r.sun.daily source code
(history)
Latest change: Tuesday Nov 05 09:35:47 2024 in commit: f00067506253c89598cffadc3c7fa07cff7233fd
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GRASS Development Team,
GRASS GIS 8.3.3dev Reference Manual