Effective Air Flow Heights
- Author: J.Boehner, O.Conrad (c) 2008
- Menu: Terrain Analysis | Climate and Weather
Description
Effective Air Flow Heights
References
- Boehner, J., & Antonic, O. (2009): Land-surface parameters specific to topo-climatology. In: Hengl, T., & Reuter, H. (Eds.): Geomorphometry - Concepts, Software, Applications. Developments in Soil Science, Volume 33, p.195-226, Elsevier. doi:10.1016/S0166-2481(08)00008-1.
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Elevation | grid, input | DEM | - | - |
| Wind Direction | grid, input, optional | DIR | Direction into which the wind blows, starting with 0 for North and increasing clockwise. | - | |
| Wind Speed | grid, input, optional | LEN | - | - | |
| Output | Effective Air Flow Heights | grid, output | AFH | - | - |
| Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Wind Direction Units | choice | DIR_UNITS | - | Available Choices: [0] radians [1] degree Default: 0 | |
| Scaling | floating point number | LEN_SCALE | - | Default: 1.000000 | |
| Search Distance [km] | floating point number | MAXDIST | - | Minimum: 0.000000 Default: 300.000000 | |
| Constant Wind Direction | floating point number | DIR_CONST | constant direction into the wind blows, given as degree | Default: 135.000000 | |
| Old Version | boolean | OLDVER | use old version for constant wind direction (no acceleration and averaging option) | Default: 0 | |
| Acceleration | floating point number | ACCEL | - | Minimum: 1.000000 Default: 1.500000 | |
| Elevation Averaging | boolean | PYRAMIDS | use more averaged elevations when looking at increasing distances | Default: 0 | |
| Windward Factor | floating point number | LEE | - | Default: 0.500000 | |
| Luv Factor | floating point number | LUV | - | Default: 3.000000 |
Command Line
Usage: saga_cmd ta_morphometry 11 [-DEM] [-DIR ] [-DIR_UNITS ] [-LEN ] [-LEN_SCALE ] [-AFH ] [-MAXDIST ] [-DIR_CONST ] [-OLDVER ] [-ACCEL ] [-PYRAMIDS ] [-LEE ] [-LUV ] -DEM: Elevation grid, input -DIR: Wind Direction grid, input, optional -DIR_UNITS: Wind Direction Units choice Available Choices: [0] radians [1] degree Default: 0 -LEN: Wind Speed grid, input, optional -LEN_SCALE: Scaling floating point number Default: 1.000000 -AFH: Effective Air Flow Heights grid, output -MAXDIST: Search Distance [km] floating point number Minimum: 0.000000 Default: 300.000000 -DIR_CONST: Constant Wind Direction floating point number Default: 135.000000 -OLDVER: Old Version boolean Default: 0 -ACCEL: Acceleration floating point number Minimum: 1.000000 Default: 1.500000 -PYRAMIDS: Elevation Averaging boolean Default: 0 -LEE: Windward Factor floating point number Default: 0.500000 -LUV: Luv Factor floating point number Default: 3.000000