When downloading Landsat 8 OLI/TIRS Land Surface Reflectance from the USGS earthexplorer service, the usual archive has the following files in it :
LC82330672013150LGN00_B10.TIF LC82330672013150LGN00_B11.TIF LC82330672013150LGN00_B1.TIF ... LC82330672013150LGN00_B9.TIF LC82330672013150LGN00_BQA.TIF LC82330672013150LGN00_MTL.txt
For some scenes (e.g. LC82270652013236LGN00) though, we get the following
LC82270652013236LGN00_cfmask_conf.tif LC82270652013236LGN00_cfmask.tif LC82270652013236LGN00_sr_band1.tif ... LC82270652013236LGN00_sr_band6.tif LC82270652013236LGN00_sr_band7.tif LC82270652013236LGN00_sr_cloud.tif LC82270652013236LGN00.xml
The data stored in the .tif files is very different. When the
_MTL.txt file is present, we have band 3 values from 6000 to 10000 for a scene in the amazonian forest. But when the
.xml file is present, the values range from 0 to about 1500 (also for an amazonian forest scene which should have similar histogram).
All of the Landsat 8 information I could find assumes we get the
_MTL.txt file and I was unable to find any information about the other one. There doesn't seem to be any option in earthexplorer to control which type of data you want to download.
Does someone know how to convert between the two ?