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Satellite - Ocean Colour - MODIS - 1 day - Diffuse attenuation coefficient (k490)

oceans satellite imagery

Description

The Aqua satellite platform carries a MODIS 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 MODIS 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/.

Update Frequency

As Needed

License

http://creativecommons.org/licenses/by/4.0/

Documentation

https://catalogue-imos.aodn.org.au/geonetwork/srv/eng/catalog.search#/metadata/a8632154-b8e5-493d-acd4-e458fae3ae26

Managed By

AODN

See all datasets managed by AODN.

Contact

info@aodn.org.au

How to Cite

Satellite - Ocean Colour - MODIS - 1 day - Diffuse attenuation coefficient (k490) was accessed on DATE from https://registry.opendata.aws/aodn_satellite_diffuse_attenuation_coefficent_1day_aqua. The citation in a list of references is: "IMOS [year-of-data-download], [Title], [data-access-URL], accessed [date-of-access]."

Usage Examples

Tutorials

Resources on AWS

  • Description
    Cloud Optimised AODN dataset of IMOS - SRS - MODIS - 01 day - Diffuse attenuation coefficient (k490 )
    Resource type
    S3 Bucket
    Amazon Resource Name (ARN)
    arn:aws:s3:::aodn-cloud-optimised/satellite_diffuse_attenuation_coefficent_1day_aqua.zarr
    AWS Region
    ap-southeast-2
    AWS CLI Access (No AWS account required)
    aws s3 ls --no-sign-request s3://aodn-cloud-optimised/satellite_diffuse_attenuation_coefficent_1day_aqua.zarr/

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