Spectral Dependent Degradation of the Solar Diffuser on Suomi-NPP VIIRS Due to Surface Roughness-Induced Rayleigh Scattering

Shao, Xi; Cao, Changyong; Liu, Tung-Chang

doi:10.3390/rs8030254

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Spectral Dependent Degradation of the Solar Diffuser on Suomi-NPP VIIRS Due to Surface Roughness-Induced Rayleigh Scattering

2016
By Shao, Xi ; Cao, Changyong ; Liu, Tung-Chang
Source: Remote Sens. 2016, 8(3), 254

[PDF-2.08 MB]

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Journal Title:

Remote Sensing
Personal Author:

Shao, Xi ; Cao, Changyong ; Liu, Tung-Chang

Shao, Xi ; Cao, Changyong ; Liu, Tung-Chang Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; STAR (Center for Satellite Applications and Research)

NESDIS (National Environmental Satellite, Data, and Information Service) ; STAR (Center for Satellite Applications and Research) Less -
Description:

The Visible Infrared Imaging Radiometer Suite (VIIRS) onboard Suomi National Polar Orbiting Partnership (SNPP) uses a solar diffuser (SD) as its radiometric calibrator for the reflective solar band calibration. The SD is made of Spectralon™ (one type of fluoropolymer) and was chosen because of its controlled reflectance in the Visible/Near-Infrared/Shortwave-Infrared region and its near-Lambertian reflectance property. On-orbit changes in VIIRS SD reflectance as monitored by the Solar Diffuser Stability Monitor showed faster degradation of SD reflectance for 0.4 to 0.6 µm channels than the longer wavelength channels. Analysis of VIIRS SD reflectance data show that the spectral dependent degradation of SD reflectance in short wavelength can be explained with a SD Surface Roughness (length scale << wavelength) based Rayleigh Scattering (SRRS) model due to exposure to solar UV radiation and energetic particles.
Keywords:

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Rayleigh Scattering Solar Diffuser Spectral Dependent Degradation Surface Roughness VIIRS
Source:

Remote Sens. 2016, 8(3), 254
DOI:

https://doi.org/10.3390/rs8030254
Document Type:

Journal Article
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CC BY
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urn:sha256:98219dca8b79a4374be881cc049146fcf6fcbc1fa6feef37fa769877e3d033c9
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https://repository.library.noaa.gov/view/noaa/41055/noaa_41055_DS1.pdf
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Spectral Dependent Degradation of the Solar Diffuser on Suomi-NPP VIIRS Due to Surface Roughness-Induced Rayleigh Scattering

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