4.7. AMI L1B Reader¶
The AMI L1B Reader operates on Level 1B (L1B) NetCDF files for the Advanced Meteorological Imager (AMI) instrument on board the Korean Meteorological Administration (KMA) GEO-KOMPSAT-2A (GK-2A) satellite. Geo2Grid determines if it supports files based on the input filename. Files for AMI supported by Geo2Grid usually have the following naming scheme:
gk2a_ami_le1b_vi004_fd010ge_201909251200.nc
The AMI L1B reader supports all instrument spectral bands, identified in
Geo2Grid as the products shown in the table below. The
AMI L1B reader can be provided to the main geo2grid.sh script
using the -r option and the reader name ami_l1b.
The list of supported products includes true and natural color imagery. These are created by means of a python based atmospheric Rayleigh scattering correction algorithm that is executed as part of the Geo2Grid AMI L1B reader, along with sharpening to the highest spatial resolution. For more information on the creation of RGBs, please see the RGB section.
Product Name |
Description |
|---|---|
VI004 |
0.47um Reflectance Band |
VI005 |
0.51um Reflectance Band |
VI006 |
0.64um Reflectance Band |
VI008 |
0.86um Reflectance Band |
NR013 |
1.37um Reflectance Band |
NR016 |
1.61um Reflectance Band |
SW038 |
3.83um Brightness Temperature Band |
WV063 |
6.21um Brightness Temperature Band |
WV069 |
6.94um Brightness Temperature Band |
WV073 |
7.33um Brightness Temperature Band |
IR087 |
8.59um Brightness Temperature Band |
IR096 |
9.62um Brightness Temperature Band |
IR105 |
10.35um Brightness Temperature Band |
IR112 |
11.23um Brightness Temperature Band |
IR123 |
12.36um Brightness Temperature Band |
IR133 |
13.29um Brightness Temperature Band |
true_color |
Ratio sharpened rayleigh corrected true color |
natural_color |
Ratio sharpened corrected natural color |
airmass |
Air mass RGB |
ash |
Ash RGB |
4.7.1. Command Line Usage¶
usage: geo2grid.sh -r ami_l1b -w <writer> [-h]
Examples:
geo2grid.sh -r ami_l1b -h
geo2grid.sh -r ami_l1b -w geotiff --list-products -f /data/gk2a/ami
geo2grid.sh -r ami_l1b -w geotiff --num-workers 8 -f /data/gk2a/ami
geo2grid.sh -r ami_l1b -w geotiff -p VI005 VI006 VI008 NR013 NR016 true_color -f gk2a_ami*.nc
geo2grid.sh -r ami_l1b -w geotiff --ll-bbox 125 -15 160 10 -f /ami_data
