Author Contributions
Nischal Mishra from SDSU and Md. Obaidul Haque from SGT, contractor to USGS EROS,processed and analyzed the data from different PICS and preformed the cross-calibration works. Larry
Leigh from SDSU ran all the MODTRAN simulation works and quantified the atmospheric uncertainties inherent in the cross-calibration. Dennis Helder and Dave Aaron (SDSU) and Brian Markham (NASA GSFC) provided valuable data analysis and insights into the organization of the various sections
of the paper.