Satellite-Derived Colored Dissolved Organic Matter Maps

GCOM-C/SGLI L3 Map Colored dissolved organic matter (8-Days,1/24 deg) provides global measurements of colored dissolved organic matter (CDOM) in ocean surface waters, with a spatial resolution of 1/24 degree. The dataset is produced by the Japan Aerospace Exploration Agency (JAXA) from the SGLI sensor onboard the GCOM-C satellite, which was launched in December 2017. It offers 8-day statistically averaged products, with versions 2 and 3 currently available.

Use Cases

• Modeling global ocean carbon cycles using the average (AVE) colored dissolved organic matter concentration values.
• Assessing coastal water quality and ecosystem health by analyzing spatial patterns in the CDOM data layer.
• Validating hydrodynamic or biogeochemical models by comparing simulated CDOM with the satellite-derived quality flag (QA_flag) filtered averages.
• Studying temporal trends in marine dissolved organic carbon by utilizing the 8-day, 1-day, and 1-month statistical periods.

Strengths

• Global spatial coverage from a satellite with a wide swath (1150-1400 km).
• Provides multiple statistical periods (1-day, 8-day, 1-month) for temporal analysis.
• Data is available in two processed versions (Version 2 and Version 3).

Limitations

• Specific sample size (row count) and temporal range for the data archive are not provided.
• As a Level 3 product, it represents statistically processed data, not raw sensor measurements.
• The description does not specify the exact time range of available data records.

Provenance

Source

Japan Aerospace Exploration Agency (JAXA).

Collection Method

Derived from Level 1B and Level 2 products from the SGLI sensor on the GCOM-C satellite, statistically processed into map-projected averages.

Freshness

Satellite launched in December 2017; update frequency is tied to the 8-day, 1-day, and 1-month product generation cycles.

Geography

Global.