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Light Attenuation KdPAR

Published by Office for Coastal Management | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: July 14, 2026 at 09:58 PM | Dataset Last Updated: April 30, 2026 at 12:00 AM
This dataset represents monthly and annual averages of percentage light reaching at 1 m depth relative to surface light (KdPAR). The units are in percentage (%) as surface light reaching at 1 m depth derived from raw dataset. Wave band is 400-700 nm or Photosynthetic Active Radiation (PAR). Raw data available monthly from Jan 1, 2010, to Dec 31, 2017, with a spatial resolution of 4 km x 4 km. The monthly and annual means are summarized for the time period 2010-2017. Data provided by NESDIS Center for Satellite Applications and Research (STAR). Raw dataset collected by NASA satellite SUOMI National Polar-orbiting Partnership (NPP) using Visible Infrared Imaging Radiometer (VIIRS). Citation: SeungHyun Son, Menghua Wang., 2015: Diffuse attenuation coefficient of the photosynthetically available radiation Kd(PAR) for global open ocean and coastal waters. Remote Sensing of Environment, Volume 159, 15 March 2015, Pages 250-258.

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  • https://marinecadastre.gov/data/

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  • https://marinecadastre.gov/downloads/data/mc/LightAttenuationKdPAR.zip

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  • GCMD Keyword Forum Page

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  • Full Metadata Record

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  • NOAA Office for Coastal Management Website

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