Cross-Seasonal Impact of SST Anomalies over the Tropical Central Pacific Ocean on the Antarctic Stratosphere

Zi, Yucheng; Long, Zhenxia; Sheng, Jinyu; Lu, Gaopeng; Perrie, Will; Xiao, Ziniu

doi:10.5194/acp-26-2117-2026

Articles | Volume 26, issue 3

https://doi.org/10.5194/acp-26-2117-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-2117-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 3

Research article

|

10 Feb 2026

Research article |

| 10 Feb 2026

Cross-Seasonal Impact of SST Anomalies over the Tropical Central Pacific Ocean on the Antarctic Stratosphere

Yucheng Zi, Zhenxia Long, Jinyu Sheng, Gaopeng Lu, Will Perrie, and Ziniu Xiao

Data sets

ERA5 analysis H. Hersbach et al. https://doi.org/10.24381/cds.bd0915c6

Niño index National Oceanic and Atmospheric Administration https://psl.noaa.gov/data/timeseries/month/DS/Nino4

Short summary

We investigated how boreal winter sea surface temperatures anomaly in the central tropical Pacific impact the Antarctic stratosphere months later. Using 45 years of reanalysis data, we found that warmer sea surface lead to a warmer Antarctic stratosphere during the subsequent austral winter. This link, driven by the planetary waves and reinforced by regional sea-ice loss, provides a new insight to make long-range forecasts for stratospheric warming.