The airborne LUnar Spectral Irradiance (air-LUSI) Mission

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https://modis.gsfc.nasa.gov/sci_team/meetings/201810/posters/turpie.pdf

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https://orcid.org/0000-0002-1637-6008

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2018-10-08

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posters
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Turpie, Kevin R, Steve Brown, John Woodward, Steve Maxwell, Thomas Larason, Clarence Zarobila, Steve Grantham, Andrew Gadsden, Andrew Cataford, and Tom Stone. “The Airborne LUnar Spectral Irradiance (Air-LUSI) Mission.” Poster presented at Ocean Optics XXIV, Dubrovnik, Croatia, October 8-12, 2018. https://modis.gsfc.nasa.gov/sci_team/meetings/201810/posters/turpie.pdf.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

The airborne LUnar Spectral Irradiance (air-LUSI) mission is a NASA Airborne Instrument Technology Transition (AITT) project. The goal of the AITT program is to mature airborne instruments from the demonstration phase to science-capable instruments.The USGS RObotic Lunar Observatory (ROLO) model represents the most precise knowledge of lunar spectral irradiance and is used frequently as a relative calibration standard for Earth observation by space-borne sensors (Keiffer and Stone, 2005). However, apparent phase-dependent biases in ROLO limits its application for absolute radiometric calibration. The objective of air-LUSI is to provide NASA a capability to improve ROLO by measuring exo-atmospheric lunar spectral irradiance with unprecedented accuracy. Careful characterization of the Moon from above the atmosphere will make it a stable and consistent SI-traceable absolute calibration reference. This could revolutionize lunar calibration for some Earth observing satellites and would be especially beneficial to ocean color missions. Because of the high sensitivity of aquatic remote sensing to calibration (Turpie et al., 2015), improvement of lunar calibration could directly affect upcoming PACE and JPSS (VIIRS) missions, and retrospectively for the SeaWiFS, EOS (MODIS), and S-NPP (VIIRS) data records.