NAME
i.albedo - Computes broad band albedo from surface reflectance.
KEYWORDS
imagery,
albedo,
reflectance
SYNOPSIS
i.albedo
i.albedo --help
i.albedo [-mnlacd] input=name[,name,...] output=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- -m
- MODIS (7 input bands:1,2,3,4,5,6,7)
- -n
- NOAA AVHRR (2 input bands:1,2)
- -l
- Landsat 5+7 (6 input bands:1,2,3,4,5,7)
- -a
- ASTER (6 input bands:1,3,5,6,8,9)
- -c
- Aggressive 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
- --help
- Print usage summary
- --verbose
- Verbose module output
- --quiet
- Quiet module output
- --ui
- Force launching GUI dialog
Parameters:
- input=name[,name,...] [required]
- Name of input raster map
- output=name [required]
- Name for output raster map
i.albedo calculates the albedo, that is the Shortwave surface
reflectance in the range of 0.3-3 micro-meters. It takes as input
individual bands of surface reflectance originating from MODIS, AVHRR, Landsat
or Aster satellite sensors and calculates the albedo for those. This is
a precursor to
r.sun and any energy-balance processing.
It assumes MODIS product surface reflectance in [0;10000].
Maybe change input requirement of MODIS to [0.0-1.0]?
r.sun,
i.vi
Yann Chemin, International Rice Research Institute, The Philippines
Last changed: $Date: 2014-12-09 18:31:29 +0100 (Tue, 09 Dec 2014) $
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GRASS Development Team,
GRASS GIS 7.0.3 Reference Manual