The Antarctic ozone hole exerts a substantial impact on the climate of the Southern Hemisphere, yet research exploring its potential influence on the Northern Hemisphere climate is limited. This study unveils a significant positive relationship between interannual variations of Antarctic total column ozone (TCO) during September–October and East Asian precipitation in the subsequent boreal winter. Specifically, ~10% of the East Asian winter precipitation variability is attributed to Antarctic TCO during September–October. Both observational data and model results indicate that the increased Antarctic TCO during September–October triggers a simultaneous meridional southern Indian Ocean tripole sea surface temperature anomalies (SSTA) through the negative phase of the Southern Annular Mode. This SSTA pattern persists from September–November through the boreal winter, subsequently weakening the local-scale zonal-vertical circulation anomalies in the Indian Ocean. The process leads to positive outgoing longwave radiation (OLR) anomalies over the southern Marine Continent. As a result, the linear response of wind anomalies at 850 hPa over East Asia to the OLR-induced diabatic heating anomalies exhibits southwesterlies, as demonstrated by a linear baroclinic model. These anomalous winds facilitate the transport of abundant moisture from the tropics to East Asia, favoring the formation of winter precipitation. We employ the Specified-Chemistry version of the Whole Atmosphere Community Climate Model to validate that the increase of September–October Antarctic ozone substantially enhances East Asian precipitation during boreal winter. Importantly, the relationship between Antarctic ozone and East Asian winter precipitation is found to be independent of El Niño-Southern Oscillation and the Indian Ocean Dipole Mode. Our findings provide a fresh insight into the prediction of the East Asian winter precipitation.

南极臭氧空洞对南半球​​气候产生重大影响，但探索其对北半球气候潜在影响的研究有限。这项研究揭示了9月至10月南极总臭氧柱（TCO）的年际变化与随后的北方冬季东亚降水之间存在显着的正相关关系。具体而言，东亚冬季降水变化的 10% 归因于 9 月至 10 月期间的南极 TCO。观测数据和模型结果均表明，9月至10月南极TCO的增加通过南环模负位相同时触发了经向南印度洋三极海面温度异常（SSTA）。这种海温异常模式从 9 月至 11 月一直持续到北半球冬季，随后削弱了印度洋局地尺度的纬向垂直环流异常。该过程导致南部海洋大陆上空出现正出射长波辐射（OLR）异常。结果，东亚850 hPa风异常对OLR引起的非绝热加热异常的线性响应表现出西南风，正如线性斜压模型所证明的那样。这些异常风有利于将丰富的水分从热带输送到东亚，有利于冬季降水的形成。我们采用特定化学版本的整个大气群落气候模型来验证 9 月至 10 月南极洲臭氧的增加显着增强了北半球冬季的东亚降水。 重要的是，南极臭氧与东亚冬季降水之间的关系被发现与厄尔尼诺南方涛动和印度洋偶极模无关。我们的研究结果为东亚冬季降水的预测提供了新的见解。