From Australian Oceans Data Network
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IMOS - Satellite Remote Sensing - NOAA20 - 01 day - Diffuse attenuation coefficient (k490)

Created 13/03/2025

Updated 27/03/2025

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The NOAA20 satellite platform carries a VIIRS sensor that observes sunlight reflected from within the ocean surface layer at multiple wavelengths. These multi-spectral measurements are used to infer the diffuse attenuation coefficient (Kd) at 490nm wavelength which provides information on how light is attenuated in the water column. It is defined as the scaling length of the exponential decrease of the downwelling irradiance, and has units (m^-1). The VIIRS K490 product estimates Kd at 490nm wavelength, using a semi-empirical model based on the ratio of water leaving radiances at 490nm and 555nm. The algorithm is described at https://oceancolor.gsfc.nasa.gov/atbd/kd/.

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Title IMOS - Satellite Remote Sensing - NOAA20 - 01 day - Diffuse attenuation coefficient (k490)
Language English
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/ed8af7e0-ed9e-4de3-96ef-eb82c625a378
Contact Point
CSIRO Oceans & Atmosphere
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "IMOS - Satellite Remote Sensing - NOAA20 - 01 day - Diffuse attenuation coefficient (k490)". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/imos-satellite-remote-sensing-noaa20-01-day-diffuse-attenuation-coefficient-k490

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