NAME
i.albedo - Computes broad band albedo from surface reflectance.
KEYWORDS
imagery, albedo, surface reflectance
SYNOPSIS
i.albedo
i.albedo help
i.albedo [-mnlacd] input=name[,name,...] output=name [--overwrite] [--verbose] [--quiet]
Flags:
- -m
- Modis (7 input bands:1,2,3,4,5,6,7)
- -n
- NOAA AVHRR (2 input bands:1,2)
- -l
- Landsat (6 input bands:1,2,3,4,5,7)
- -a
- Aster (6 input bands:1,3,5,6,8,9)
- -c
- Agressive mode (Landsat)
- Albedo dry run to calculate some water to beach/sand/desert stretching, a kind of simple atmospheric correction
- -d
- Soft mode (Modis)
- Albedo dry run to calculate some water to beach/sand/desert stretching, a kind of simple atmospheric correction
- --overwrite
- Allow output files to overwrite existing files
- --verbose
- Verbose module output
- --quiet
- Quiet module output
Parameters:
- input=name[,name,...] [required]
- Name of input raster map
- output=name [required]
- Name for output raster map
DESCRIPTION
i.albedo calculates the Albedo, that is the Shortwave surface
reflectance in the range of 0.3-3 micro-meters. It takes input of
individual bands of surface reflectance from Modis, AVHRR, Landsat or
Aster and calculates the Albedo for those. This is an precursor to
r.sun and any Energy-Balance processing.
NOTES
It assumes MODIS product surface reflectance in [0;10000]
TODO
Maybe change input requirement of MODIS to [0.0-1.0]?
SEE ALSO
r.sun,
i.vi
AUTHORS
Yann Chemin, International Rice Research Institute, The Philippines
Last changed: $Date: 2011-11-08 13:24:20 -0800 (Tue, 08 Nov 2011) $
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