Biogeosciences
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Articles | Volume 23, issue 3
Articles | Volume 23, issue 3
https://doi.org/10.5194/bg-23-867-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-867-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 3
Research article
 | 
02 Feb 2026
Research article |  | 02 Feb 2026

Seasonality of the North Pacific Oligotrophic Gyre area in the past two decades and a modelling perspective for the 21st century

Siyu Meng, Xun Gong, Benjamin G. M. Webber, Manoj Joshi, Xiaokun Ding, Xiang Gong, Mingliang Gu, and Huiwang Gao

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Short summary
The North Pacific oligotrophic ocean gyre (NPOG), with low phytoplankton biomass, covers about 40 % of the North Pacific. The variations in NPOG seasonal cycle, which have a greater impact than its annual mean changes, are influenced by the El Niño-Southern Oscillation from 1998 to 2021. However, from 2021 to 2100, a weakened NPOG seasonal cycle is expected due to climate change. These changes in NPOG seasonal cycle could affect fisheries and marine ecosystems.
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