Ocean Science
Ocean Science
OS
Articles | Volume 20, issue 3
Articles | Volume 20, issue 3
https://doi.org/10.5194/os-20-817-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-20-817-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 3
Research article
 | 
18 Jun 2024
Research article |  | 18 Jun 2024

Anomalous North Pacific subtropical mode water volume and density decrease in a recent stable Kuroshio Extension period from Argo observations

Jing Sheng, Cong Liu, Yanzhen Gu, Peiliang Li, Fangguo Zhai, and Ning Zhou

Data sets

Argo float data and metadata from Global Data Assembly Centre (Argo GDAC) Argo https://doi.org/10.17882/42182

Global Ocean Gridded L 4 Sea Surface Heights And Derived Variables Reprocessed 1993 Ongoing Global Ocean Gridded https://doi.org/10.48670/moi-00148

Global Ocean Gridded L 4 Sea Surface Heights And Derived Variables Nrt Global Ocean Gridded https://doi.org/10.48670/moi-00149

Grid Point Value of the Monthly Objective Analysis using the Argo data Shigeki Hosoda https://doi.org/10.17596/0000102

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Short summary
The homogeneous water column, named mode water, retains atmosphere conditions and biogeochemical elements from the deep winter mixed layer and became weaker and warmer in the North Pacific subtropical ocean in 2018–2021 even though the Kuroshio Extension was stable. Locally anomalous east wind transporting warm water to the north and enhanced near-surface stratification hinder the deepening of the winter mixed layer. This study has broad implications for climate change and biogeochemical cycles.
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