The files in these folder are Landsat 7 ETM satellite images acquired in 2000 covering the O'Neal and Big Desert study areas.
The files are coded by name.

ra = is the product checked for geometric accuracy (with 2004 NAIP imagery) including a Cos(t) atmospheric correction (Chavez 1996).  
Atmospheric correction was peformed with Idrisi Andes using metadata found in the following websites:
http://landsathandbook.gsfc.nasa.gov/handbook/handbook_htmls/chapter11/chapter11.html
and metadata from http://edcsns17.cr.usgs.gov/EarthExplorer/

The atmospheric correction parmaters are provided in the following file: Landsat_atm_correction_param.xls

All files are stored in Geo-tiff file.