Tool Snow Cover
The 'Snow Cover' tool uses a simple model to estimate snow cover statistics from climate data. When temperature falls below zero any precipitation is accumulated as snow. Temperatures above zero will diminish accumulated snow successively until it is gone completely. Simulation is done on a daily basis. If you supply the tool with monthly averages, temperatures will be interpolated using a spline and precipitation will be splitted into separate events. The latter is done with respect to the monthly mean temperature, i.e. the higher the temperature the more concentrated are precipitation events and vice versa.
References
- Paulsen, J. / Körner, C. (2014): A climate-based model to predict potential snow_cover position around the globe. Alpine Botany, 124:1, 1–12. doi:10.1007/s00035-014-0124-0. online.
- Author: O.Conrad (c) 2017
- Menu: Climate and Weather|Tools
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Mean Temperature | Grid list, input | T | - | - |
| Precipitation | Grid list, input | P | - | - |
| Output | Snow Cover Days | Grid, output | DAYS | - | - |
| Average (*) | Grid, output, optional | MEAN | - | - |
| Maximum (*) | Grid, output, optional | MAXIMUM | - | - |
| Quantile (*) | Grid, output, optional | QUANTILE | - | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Value | Floating point | QUANT_VAL | Quantile specified as percentage. | Minimum: 0.000000
Maximum: 100.000000
Default: 50.000000 |
| Time | Choice | TIME | - | Available Choices:
[0] Year
[1] January - March
[2] April - June
[3] July - September
[4] October - December
[5] Single Month
Default: 0 |
| 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: 0 |
| (*) optional |
Command-line
Usage: saga_cmd climate_tools 17 [-T <str>] [-P <str>] [-DAYS <str>] [-MEAN <str>] [-MAXIMUM <str>] [-QUANTILE <str>] [-QUANT_VAL <double>] [-TIME <str>] [-MONTH <str>]
-T:<str> Mean Temperature
Grid list, input
-P:<str> Precipitation
Grid list, input
-DAYS:<str> Snow Cover Days
Grid, output
-MEAN:<str> Average
Grid, output, optional
-MAXIMUM:<str> Maximum
Grid, output, optional
-QUANTILE:<str> Quantile
Grid, output, optional
-QUANT_VAL:<double> Value
Floating point
Minimum: 0.000000
Maximum: 100.000000
Default: 50.000000
-TIME:<str> Time
Choice
Available Choices:
[0] Year
[1] January - March
[2] April - June
[3] July - September
[4] October - December
[5] Single Month
Default: 0
-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: 0