Tool Daily Solar Radiation
This tool calculates the daily solar radiation (Rg) based on the date and the latitudinal position for incoming top of atmosphere radiation (R0) estimation and the sunshine duration (Sd) provided as percentage of its potential maximum (S0). It uses a simple empiric formula:
Rg = R0 * (0.19 + 0.55 * Sd/S0)
- Author: O.Conrad (c) 2021
- Menu: Climate and Weather|Tools
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Latitude | Grid, input | LATITUDE | [Degree] | - |
| Output | Solar Radiation | Grid, output | SOLARRAD | [J/cm^2] | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Month | Choice | MONTH | - | Available Choices:
[0] January
[1] February
[2] March
[3] April
[4] May
[5] June
[6] July
[7] August
[8] September
[9] October
[10] November
[11] December
Default: 2 |
| Day of Month | Integer | DAY | - | Minimum: 1
Maximum: 31
Default: 30 |
| Sunshine Duration | Floating point | SUNSHINE | Daily sunshine duration as percentage of its potential maximum. | Minimum: 0.000000
Maximum: 100.000000
Default: 50.000000 |
Command-line
Usage: saga_cmd climate_tools 31 [-LATITUDE <str>] [-SOLARRAD <str>] [-MONTH <str>] [-DAY <num>] [-SUNSHINE <double>]
-LATITUDE:<str> Latitude
Grid, input
-SOLARRAD:<str> Solar Radiation
Grid, output
-MONTH:<str> Month
Choice
Available Choices:
[0] January
[1] February
[2] March
[3] April
[4] May
[5] June
[6] July
[7] August
[8] September
[9] October
[10] November
[11] December
Default: 2
-DAY:<num> Day of Month
Integer
Minimum: 1
Maximum: 31
Default: 30
-SUNSHINE:<double> Sunshine Duration
Floating point
Minimum: 0.000000
Maximum: 100.000000
Default: 50.000000