Contrasting the roles of regional anthropogenic aerosols from the western and eastern hemispheres in driving the 1980–2020 Pacific multi-decadal variations

Diao, Chenrui; Xu, Yangyang; Hu, Aixue; Wang, Zhili

doi:https://doi.org/10.5194/acp-25-2167-2025

Articles | Volume 25, issue 4

https://doi.org/10.5194/acp-25-2167-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-2167-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 4

Research article

|

19 Feb 2025

Research article |

| 19 Feb 2025

Contrasting the roles of regional anthropogenic aerosols from the western and eastern hemispheres in driving the 1980–2020 Pacific multi-decadal variations

Chenrui Diao, Yangyang Xu, Aixue Hu, and Zhili Wang

Supplement

https://doi.org/10.5194/acp-25-2167-2025-supplement

Data sets

Isolating the evolving contributions of anthro- pogenic aerosols and greenhouse gases: A new CESM1 large ensemble community resource (https://www.cesm.ucar.edu/working_groups/CVC/simulations/cesm1-single_forcing_le.html) Clara Deser et al. https://doi.org/10.1175/JCLI-D-20-0123.1

The Community Earth System Model (CESM) Large Ensemble project: A community resource for studying climate change in the presence of internal climate variability (https://www.cesm.ucar.edu/projects/ community-projects/LENS/data-sets.html) Jennifer E. Kay et al. https://doi.org/10.1175/BAMS-D-13-00255.1

Model code and software

Code for “Contrasting the roles of regional anthropogenic aerosols from the western and eastern hemispheres in driving the 1980–2020 Pacific multi-decadal variations” Chenrui Diao https://doi.org/10.5281/zenodo.14867360

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Short summary

Industrial aerosol increases in Asia and reductions in North America and Europe in 1980–2020 influenced climate changes over the Pacific Ocean differently. Asian aerosols caused El Niño-like temperature patterns and slightly weakened the natural variation in the North Pacific, while reduced emissions of western countries led to extensive warming in middle–high latitudes of the North Pacific. Human impacts on the Pacific climate may change when emission reduction occurs over Asia in the future.