Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 18, issue 6
Articles | Volume 18, issue 6
https://doi.org/10.5194/essd-18-3757-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-3757-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 6
Data description article
 | 
03 Jun 2026
Data description article |  | 03 Jun 2026

Global monthly ocean dissolved oxygen (1960–2023) reconstructed to 5902 m with BLENDR, a Bayesian-optimized ensemble learning framework

Mingyu Han, Xiaogang Xing, and Yuntao Zhou

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Short summary
We combined ship and float measurements with machine learning to reconstruct monthly dissolved oxygen in the global ocean from 1960 to 2023, from the surface to 5902 m. The results reveal a persistent loss of oxygen, strongest below the surface and in major low-oxygen zones, with recent acceleration in several ocean regions. This open dataset supports climate research and assessments of risks for marine ecosystems.
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