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Scattering And Absorption of Light in Planetary Regoliths
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The VIIRS Cirrus Reflectance Algorithm.

Bo-Cai Gao1, Rong-Rong Li1

  • 1Naval Research Laboratory, Remote Sensing Division, Code 7230, Washington, DC 20375, USA.

Sensors (Basel, Switzerland)
|February 28, 2023
PubMed
Summary
This summary is machine-generated.

The Visible Infrared Imaging Radiometer Suite (VIIRS) M9 channel detects thin cirrus clouds. An empirical technique quantifies cirrus reflectance, accounting for water vapor absorption, improving data accuracy.

Keywords:
atmospherecirrus cloudsremote sensingsensors

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Area of Science:

  • Earth Observation
  • Atmospheric Science
  • Remote Sensing

Background:

  • The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument on the Suomi National Polar-orbiting Partnership (SNPP) satellite features an M9 channel optimized for thin cirrus cloud detection.
  • The M9 channel's sensitivity to cirrus clouds is influenced by atmospheric water vapor absorption, necessitating correction for accurate quantitative analysis.

Purpose of the Study:

  • To develop and describe an empirical technique for retrieving cirrus reflectances from VIIRS data.
  • To account for water vapor absorption effects in the M9 channel for accurate cirrus detection and removal of cirrus effects in other spectral ranges.

Main Methods:

  • Development of an empirical algorithm for cirrus reflectance retrieval in the visible, near-infrared (VNIR), and shortwave infrared (SWIR) spectral regions.
  • Detailed theoretical and mathematical descriptions of the algorithm's physics and operational implementation for VIIRS data.

Main Results:

  • The study details the development of an operational VIIRS cirrus reflectance algorithm.
  • Sample retrieval results demonstrate the algorithm's application to VIIRS data, providing cirrus reflectance values.

Conclusions:

  • The developed empirical technique effectively retrieves cirrus reflectances by addressing water vapor absorption.
  • The SNPP VIIRS cirrus reflectance data products are publicly available, supporting further research in atmospheric science.