MISR 2005 Calibration Verification Study
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radiometric calibration↗
Engineering topics
Abdou, Wedad
Publications and source records attributed to Abdou, Wedad.
Validating the MISR radiometric scale for the ocean aerosol science communities
This paper validates that radiometric accuracy is maintained throughout the dynamic range of the instrument. As part of this study, a new look has been taken on the band-relative scale, and a decrease in the radiance reported for the Red and NIR Bands has resulted.
aerosol↗
2003 Railroad Valley vicarious calibration experiment
The Multi-angle Imaging SpectroRadiometer (MISR) is one of five instruments on-board the EOS/Terra spacecraft. The instrument has nine cameras, which view up to 70 degrees forward and aft of the spacecraft track.
MISR↗
MISR Calibration and implications for low-light-level aerosol retrieval over dark water.
The authors push the limits of the vicarious calibration method’s accuracy, aiming to assess absolute, camera-to-camera, and band-toband radiometry. Patterns repeated over many well-constrained cases lend confidence to the results, at a few percent accuracy, as do additional vicarious calibration tests performed with multiplatform observations taken during the Chesapeake Lighthouse and Aircraft Measurements for Satellites (CLAMS) campaign. Conclusions are strongest in the red and green bands, but are too uncertain to accept for the near-infrared. MISR nadir-view and MODIS low-light-level absolute reflectances differ by about 4% in the blue and green bands, with MISR reporting higher values.
Clark, Dennis↗
Reversible and Irreversible Sources of Radiation Entropy
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Radiation Entropy↗
Detection of climate forcing using emission spectra
We discuss the use of thermal emission spectra recorded by satellites to construct climate indices that can detect the evolution of a specific climate forcing in a time series. The two important issues are selectivity against climate forcings other than one that is sought, and sensitivity to the required forcing. We show that indices with selectivity can be found, and that their sensitivity can be high.
Thermal Emission Spectra↗