Tool Diurnal Anisotropic Heat
This tool calculates a rather simple approximation of the anisotropic diurnal heat (Ha) distribution using the formula:
Ha = cos(amax - a) * arctan(b)
where amax defines the aspect with the maximum total heat surplus, a is the slope aspect and b is the slope angle. For more details see Boehner & Antonic (2009).
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. ScienceDirect.
- Author: J.Boehner, O.Conrad (c) 2008
- Menu: Terrain Analysis|Climate and Weather
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | Grid (input) | DEM | - | - |
| Output | Diurnal Anisotropic Heating | Grid (output) | DAH | - | - |
| Options | Grid system | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Alpha Max (Degree) | Floating point | ALPHA_MAX | - | Minimum: 0.000000
Maximum: 360.000000
Default: 202.500000 |
Command-line
Usage: saga_cmd ta_morphometry 12 [-DEM <str>] [-DAH <str>] [-ALPHA_MAX <double>]
-DEM:<str> Elevation
Grid (input)
-DAH:<str> Diurnal Anisotropic Heating
Grid (output)
-ALPHA_MAX:<double> Alpha Max (Degree)
Floating point
Minimum: 0.000000
Maximum: 360.000000
Default: 202.500000