Articles | Volume 23, issue 19
https://doi.org/10.5194/bg-23-7043-2026
https://doi.org/10.5194/bg-23-7043-2026
Research article
 | 
08 Oct 2026
Research article |  | 08 Oct 2026

Precision of phytoplankton pigment analysis by high-performance liquid chromatography: an assessment of the global ocean color validation dataset analyzed by NASA

Joaquín E. Chaves, Crystal S. Thomas, and Antonio Mannino

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Short summary
Satellites monitor ocean health by measuring plant pigments, but accuracy depends on reliable water samples. NASA analyzed nearly 20,000 ocean samples to assess measurement consistency. Most pigments met established quality standards. Variability was largest for rare pigments at low concentrations, reflecting natural ocean patchiness rather than instrument error. Rigorous quality controls support satellite validation, and improvements in field sample collection offer the most promising path.
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