Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 18, issue 1
Articles | Volume 18, issue 1
https://doi.org/10.5194/essd-18-569-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-569-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 1
Data description article
 | 
21 Jan 2026
Data description article |  | 21 Jan 2026

Decadal and spatially complete global surface chlorophyll-a data record from satellite and BGC-Argo observations

Daniel J. Ford, Gemma Kulk, Shubha Sathyendranath, and Jamie D. Shutler

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Short summary
Chlorophyll a is routinely monitored using ocean colour satellites, however, these data records have gaps. Here we present a methodology to provide a spatially and temporally complete chlorophyll-a record, using Biogeochemical Argo floats as a constraint on wintertime chlorophyll-a, and a statistical kriging approach to fill cloud gaps. Thereby, providing a complete record at monthly 0.25° resolution between 1997 and 2024, consistent to the underlying climate data record.
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