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Development of an uncertainty budget for a disseminated lunar irradiance scale over the visible to near-infrared spectral region
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  • Steven Brown ,
  • John T. Woodward ,
  • Truman Wilson ,
  • Xiaxiong Xiong ,
  • Amit Angal ,
  • Junqiang Sun
Steven Brown
National Institute of Standards and Technology

Corresponding Author:[email protected]

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John T. Woodward
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Truman Wilson
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Xiaxiong Xiong
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Amit Angal
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Junqiang Sun
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Abstract

This work develops a framework for the development of an SI-traceable model of lunar irradiance over the visible to near-infrared spectral region. Based on revisions to the Robotic Lunar Observatory (ROLO) model of lunar reflectance developed by the United States Geological Survey, it is called the Common Lunar Model-ROLO (CLM-R). Inputs from several different instruments are included in its development: SI-traceable lunar measurements by the airborne-LUnar Spectral Irradiance (air-LUSI) instrument are used for an estimate of the phase correction to ROLO while residual corrections to the ROLO model for lunar phase and libration angles are developed using long-term lunar data sets from Moderate Resolution Imaging Spectrometers (MODIS) on NASAâ\euro™s Terra and Aqua satellites and Visible Infrared Imaging Radiometers (VIIRS) on NOAAâ\euro™s Suomi National Polar-orbiting Partnership and NOAA-20 satellites. Additionally, this work examines the potential use of the Moon as an absolute, SI-traceable, celestial calibration target by providing an estimate of the uncertainty in a sensor calibration using the Moon. Based on lunar measurements by MODIS and VIIRS, a combined standard uncertainty less than 1 % is achievable for the calibrations of satellite sensors using the Moon.Â