Global Ocean Remote Sensing Reflectance Data from ENVISAT MERIS

ENVISAT MERIS Level-3 binned data provides the foundational remote sensing reflectance (Rrs) variable, measured in sr⁻¹, for retrieving ocean color products. This version 2022.0 dataset, organized by OB_CLOUD, was last updated in May 2012. It is used for algorithm development, validation, and water-quality applications.

Use Cases

• Retrieve chlor_a concentrations using Rrs_412 and Rrs_443 bands as primary inputs.
• Calculate diffuse attenuation coefficient Kd_490 from Rrs values across multiple spectral bands.
• Develop and validate inherent optical property (IOP) algorithms using the suite of Rrs_λ variables.
• Assess water quality in optically complex coastal regions by analyzing per-pixel quality flags for land and cloud.
• Support ecosystem applications by analyzing time-series of Rrs data for specific geographic bins.

Strengths

• Provides the foundational Rrs observable for retrieving multiple ocean color geophysical products.
• Includes per-file quality flags for land, cloud, sun glint, and high aerosol to guide data filtering.

Limitations

• Data collection ended with the ENVISAT mission, with the last update recorded in May 2012, indicating temporal staleness.
• Specific details on row count, column count, and spatial resolution are not provided in the input.
• Performance in optically complex coastal and inland waters requires careful review of mission documentation.

Provenance

Source

ENVISAT MERIS satellite mission, processed and distributed via NASA Earthdata.

Collection Method

Satellite remote sensing measurements binned to a global Level-3 grid.

Geography

Global