The Indo-Pacific Warm Pool (IPWP) has been warming due largely to increasing greenhouse gas emissions, but its impact on Arctic sea ice remains unclear. Our study finds a significant negative correlation between the IPWP index and sea ice concentration in northeastern Canada during boreal autumn (October-December). Our results suggest that IPWP warming statistically accounts for 45% of sea ice loss observed in this region. We introduce the “Arctic capacitor effect of the IPWP”, a novel concept that expounds upon the distant connection between greenhouse gas emissions and Arctic sea ice loss. Specifically, as greenhouse gases elevate temperatures in the IPWP, increasing temperature gradient and tropical convection, a planetary wavetrain is initiated. This wavetrain, along with transit eddy feedback, traverses towards the Arctic and thereby influences the strength of the Arctic vortex and its associated effects on Arctic sea ice. Our findings highlight the crucial role of tropical oceans in the broader context of global climate change, emphasizing the necessity of accounting for their impact on polar climate.

印太暖池 （IPWP） 一直在变暖，主要是由于温室气体排放增加，但其对北极海冰的影响仍不清楚。我们的研究发现，在北方秋季（10 月至 12 月），加拿大东北部的 IPWP 指数与海冰浓度之间存在显著的负相关关系。我们的结果表明，IPWP 变暖在统计上占该地区观察到的海冰损失的 45%。我们介绍了“IPWP 的北极电容器效应”，这是一个新颖的概念，阐述了温室气体排放与北极海冰损失之间的遥远联系。具体来说，随着温室气体升高 IPWP 中的温度，增加温度梯度和热带对流，行星波序列开始。该波系与凌日涡流反馈一起穿越到北极，从而影响北极涡旋的强度及其对北极海冰的相关影响。我们的研究结果强调了热带海洋在全球气候变化的更广泛背景下的关键作用，强调了考虑它们对极地气候影响的必要性。