Angal A. author Xiong X. author Choi T.J. author Chander Gyanesh author Wu A. author 2009 Society of Photo-Optical Instrumentation Engineers (SPIE) Bellingham, Wash. 5 August 2009 FY 2009 Pseudo-invariant ground targets have been extensively used to monitor the long-term radiometric calibration stability of remote sensing instruments. The NASA MODIS Characterization Support Team (MCST), in collaboration with members from the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center, has previously demonstrated the use of pseudo-invariant ground sites for the long-term stability monitoring of Terra MODIS and Landsat 7 ETM+ sensors. This paper focuses on the results derived from observations made over the Sonoran Desert. Additionally, Landsat 5 TM data over the Sonoran Desert site were used to evaluate the temporal stability of this site. Top-ofatmosphere (TOA) reflectances were computed for the closely matched TM, ETM+, and MODIS spectral bands over selected regions of interest. The impacts due to different viewing geometries, or the effect of test site Bi-directional Reflectance Distribution Function (BRDF), are also presented. band bands bidirectional reflectance bidirectional reflectance distribution function BRDF calibration characterization collaboration conference papers data data processing desert distribution function Earth earth resources Earth Resources Observation and Science Enhanced Thematic Mapper Plus EROS geometry impact instrument Landsat Landsat 5 Landsat 7 Moderate Resolution Imaging Spectroradiometer (MODIS) MODIS monitoring NASA National Aeronautics and Space Administration (NASA) pseudo-invariant radiometric radiometric calibration reflectance remote sensing resources sensor spectral band temporal Terra Terra MODIS test site Thematic Mapper (TM) Thematic Mapper/Enhanced Thematic Mapper Plus TM TOA U.S.Geological Survey (USGS) USGS viewing geometry exported from refbase (http://eros.usgs.gov/refbase/show.php?record=23869), last updated on Fri, 21 Sep 2012 12:00:11 -0500 text http://dx.doi.org/10.1117/12.825075 http://dx.doi.org/10.1117/12.825075 Angal_etal2009 EROS @ cdeering @ 105 Goldberg M.D. editor Bloom H.J. editor San Diego, Calif. 2009 Society of Photo-Optical Instrumentation Engineers (SPIE) Bellingham, Wash. 5 August 2009 conference publication http://dx.doi.org/10.1117/12.825075 in editor Proceedings of SPIE Vol. 7456