Tool Wind Shelter Index
This tool reimplements the Wind Shelter Index proposed by Plattner et al. (2004), that has originally been implemented within the RSAGA package.
References
- Plattner, C., Braun, L.N., Brenning, A. (2004): Spatial variability of snow accumulation on Vernagtferner, Austrian Alps, in winter 2003/2004. Zeitschrift fuer Gletscherkunde und Glazialgeologie, 39: 43-57. PDF at academia.edu.
- Winstral, A., Elder, K., Davis, R.E. (2002): Spatial snow modeling of wind-redistributed snow using terrain-based parameters. Journal of Hydrometeorology, 3: 524-538. doi:10.1175/1525-7541(2002)003%3C0524:SSMOWR%3E2.0.CO;2.
- Author: O.Conrad (c) 2019
- Menu: Terrain Analysis|Climate and Weather
Parameters
Name | Type | Identifier | Description | Constraints | |
---|---|---|---|---|---|
Input | Elevation | Grid, input | ELEVATION | - | - |
Output | Wind Shelter Index | Grid, output | SHELTER | - | - |
Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
Unit | Choice | UNIT | - | Available Choices: [0] degree [1] radians Default: 0 | |
Wind Direction | Floating point | DIRECTION | The direction [degree] into which the wind blows. | Default: 135.000000 | |
Tolerance | Floating point | TOLERANCE | The tolerance angle [degree] to the left and right of the direction angle. | Minimum: 0.000000 Maximum: 90.000000 Default: 5.000000 | |
Distance | Floating point | DISTANCE | [cells] | Minimum: 1.000000 Default: 5.000000 | |
Quantile | Floating point | QUANTILE | Set quantile to one to get the maximum slope angle. | Minimum: 0.000000 Maximum: 1.000000 Default: 1.000000 | |
Include Negative Slopes | Boolean | NEGATIVES | - | Default: 0 | |
Method | Choice | METHOD | - | Available Choices: [0] windward [1] leeward Default: 0 |
Command-line
Usage: saga_cmd ta_morphometry 29 [-ELEVATION <str>] [-SHELTER <str>] [-UNIT <str>] [-DIRECTION <double>] [-TOLERANCE <double>] [-DISTANCE <double>] [-QUANTILE <double>] [-NEGATIVES <str>] [-METHOD <str>] -ELEVATION:<str> Elevation Grid, input -SHELTER:<str> Wind Shelter Index Grid, output -UNIT:<str> Unit Choice Available Choices: [0] degree [1] radians Default: 0 -DIRECTION:<double> Wind Direction Floating point Default: 135.000000 -TOLERANCE:<double> Tolerance Floating point Minimum: 0.000000 Maximum: 90.000000 Default: 5.000000 -DISTANCE:<double> Distance Floating point Minimum: 1.000000 Default: 5.000000 -QUANTILE:<double> Quantile Floating point Minimum: 0.000000 Maximum: 1.000000 Default: 1.000000 -NEGATIVES:<str> Include Negative Slopes Boolean Default: 0 -METHOD:<str> Method Choice Available Choices: [0] windward [1] leeward Default: 0