Useful links
More information on the colour enhancement of the IR window channel, colour tables (palettes) and examples can be found on the Convection Working Group website: http://essl.org/cwg/?page_id=157
A detailed discussion can be found here: http://convectivestorm.blogspot.com/
The sandwich product is also described on the Convection Working Group website: http://essl.org/cwg/?page_id=143
The sandwich product is described in detail in the EUMETSAT's Case Studies library: https://www.eumetsat.int/website/home/Images/ImageLibrary/DAT_IL_09_09_23_A.html
Free software to create sandwich product:
- for interactive processing:
GIMP (GNU Image Manipulation Program)
http://www.gimp.org/
McIDAS-V
https://www.ssec.wisc.edu/mcidas/software/v/ - for operational, fully automatic processing:
ImageMagick
http://www.imagemagick.org/
Further information on Severe Storms RGB:
http://www.eumetrain.org/rgb_quick_guides/quick_guides/SevereStormsRGB.pdf