Tool Cloud Overlap
This tool calculates cloud overlay based on the maximum random overlap assumption for atmospheric cloud layers above ground. Alpha is a constant and a further parameter is the minimum cloud fraction, at which a cloud is identified as such.
- Author: D.N. Karger (c) 2019
- Menu: Climate and Weather|Tools
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Cloud Fractions | Grid list, input | COVERS | grid stack of cloud fractions | - |
| Heights | Grid list, input | HEIGHTS | grid stack of geopotential level heights | - |
| Surface Elevation | Grid, input | GROUND | - | - |
| Wind effect | Grid, input | WIND | - | - |
| Cloud Base | Grid, input | CBASE | - | - |
| Output | Total Cloud Cover | Grid, output | COVER | statistics | - |
| Number of Cloud Blocks (*) | Grid, output, optional | BLOCKS | - | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Interval | Floating point | INTERVAL | Vertical resolution for internal interpolation given in meters. | Minimum: 1.000000
Default: 100.000000 |
| Minimum Cloud Cover Fraction | Floating point | MINCOVER | Minimum cloud cover fraction at which a cloud is identified as such | Minimum: -1.000000
Maximum: 1.000000
Default: 0.100000 |
| (*) optional |
Command-line
Usage: saga_cmd climate_tools 25 [-COVERS <str>] [-HEIGHTS <str>] [-GROUND <str>] [-WIND <str>] [-CBASE <str>] [-COVER <str>] [-BLOCKS <str>] [-INTERVAL <double>] [-MINCOVER <double>]
-COVERS:<str> Cloud Fractions
Grid list, input
-HEIGHTS:<str> Heights
Grid list, input
-GROUND:<str> Surface Elevation
Grid, input
-WIND:<str> Wind effect
Grid, input
-CBASE:<str> Cloud Base
Grid, input
-COVER:<str> Total Cloud Cover
Grid, output
-BLOCKS:<str> Number of Cloud Blocks
Grid, output, optional
-INTERVAL:<double> Interval
Floating point
Minimum: 1.000000
Default: 100.000000
-MINCOVER:<double> Minimum Cloud Cover Fraction
Floating point
Minimum: -1.000000
Maximum: 1.000000
Default: 0.100000