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