Articles | Volume 23, issue 8
https://doi.org/10.5194/bg-23-2621-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-2621-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 Apr 2026
Research article |
| 20 Apr 2026
| 20 Apr 2026
Improving coastal ocean pH estimates through assimilation of glider observations and hybrid statistical methods
Ocean Sciences Department, University of California Santa Cruz, Santa Cruz, California, USA
Yuichiro Takeshita
Monterey Bay Aquarium Research Institute, Moss Landing, California, USA
Carlos Rocha
Ocean Sciences Department, University of California Santa Cruz, Santa Cruz, California, USA
now at: Climate & Atmospheric Science, NSW Department of Climate Change, Energy, the Environment and Water, Sydney, Australia
Christopher A. Edwards
Ocean Sciences Department, University of California Santa Cruz, Santa Cruz, California, USA
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Short summary
We improve coastal ocean carbonate system estimates by assimilating glider pH and alkalinity data into a regional biogeochemical model. Joint assimilation with physical observations successfully improves pH estimates while maintaining physical estimates. A hybrid approach combining dynamical models with statistical methods produces accurate pH estimates without requiring biogeochemical models, offering an alternative solution for ocean acidification monitoring.
We improve coastal ocean carbonate system estimates by assimilating glider pH and alkalinity...
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