Nimbus-7 CZCS Global Ocean Reflectance Data

Remote sensing reflectance (Rrs) data from the Nimbus-7 Coastal Zone Color Scanner (CZCS) satellite, processed to Level-3 global mapped products. The dataset provides the foundational observable for retrieving ocean color products like chlorophyll-a concentration and supports water-quality applications. The data originates from NASA's OB_CLOUD and was last updated in June 1986.

Use Cases

• Retrieve chlorophyll-a concentration (chlor_a) from Rrs_443 and other band values using bio optical algorithms.
• Calculate diffuse attenuation coefficient (Kd_490) for water clarity studies using Rrs_490.
• Develop and validate new Inherent Optical Property (IOP) retrieval algorithms using the Rrs_412, Rrs_443, and Rrs_555 bands.
• Assess water quality in optically complex coastal and inland waters by analyzing per-pixel quality flags for cloud, land, and sun glint.

Strengths

• Provides foundational remote sensing reflectance (Rrs) data for key ocean color bands (e.g., 412, 443, 490, 555 nm).
• Includes per-file quality flags for land, cloud, sun glint, and high aerosol to aid data filtering.

Limitations

• Data is temporally stale, with the last update in 1986, limiting analysis of contemporary oceanographic changes.
• Specific row counts, geographic resolution, and sample sizes are not provided in the input description.

Provenance

Source

NASA Earthdata (OB_CLOUD)

Collection Method

Satellite remote sensing from the Nimbus-7 Coastal Zone Color Scanner (CZCS) instrument.

Time Range

null

Freshness

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Geography

Global mapped coverage.