Cloud Overlap
- Author: D.N. Karger (c) 2019
- Menu: Climate and Weather | Tools
Description
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.
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 number | INTERVAL | Vertical resolution for internal interpolation given in meters. | Minimum: 1.000000
Default: 100.000000 |
| Minimum Cloud Cover Fraction | floating point number | MINCOVER | Minimum cloud cover fraction at which a cloud is identified as such | Minimum: -1.000000
Maximum: 1.000000
Default: 0.100000 |
Command Line
Usage: saga_cmd climate_tools 25 [-COVERS ] [-HEIGHTS ] [-GROUND ] [-WIND ] [-CBASE ] [-COVER ] [-BLOCKS ] [-INTERVAL ] [-MINCOVER ]
-COVERS: Cloud Fractions
grid list, input
-HEIGHTS: Heights
grid list, input
-GROUND: Surface Elevation
grid, input
-WIND: Wind effect
grid, input
-CBASE: Cloud Base
grid, input
-COVER: Total Cloud Cover
grid, output
-BLOCKS: Number of Cloud Blocks
grid, output, optional
-INTERVAL: Interval
floating point number
Minimum: 1.000000
Default: 100.000000
-MINCOVER: Minimum Cloud Cover Fraction
floating point number
Minimum: -1.000000
Maximum: 1.000000
Default: 0.100000