Richard Lynch, Craig Richard, Hilary E. Snell, David B. Hogan, Allen Huang, Denise Hagan, Michael Mussetto, "Improvements to NPOESS temperature and moisture sounding by combining sounder and imaging instrument data," Proc. SPIE 6301, Atmospheric and Environmental Remote Sensing Data Processing and Utilization II: Perspective on Calibration/Validation Initiatives and Strategies, 63010E (1 September 2006);