The impacts of Arctic sea ice loss on summertime weather in the Northern Hemisphere have garnered considerable attention. Despite the extensive focus on this relationship, the influence of tropical systems on Arctic regions has been relatively underexplored, with only a limited number of existing studies concentrating exclusively on either dynamic or thermodynamic effects. This study aims to address this gap by examining a barotropic anomalous circulation over the Arctic region associated with Indian Summer Monsoon (ISM) rainfall. The observed anomalous circulation exhibits a distinct zonally dipole pattern, characterized by anomalous high pressure over Northern Canada and Asia, coupled with anomalous low pressure located east of Greenland. Verification through model experiments demonstrates that the diabatic heating of ISM rainfall contribute to the formation of the observed ISM-related circulation. The modulation of surface clear sky downwelling longwave radiation (\({{DLR}}_{{clear\; sky}}\)) by the circulation anomalies over the Arctic modified surface thermal conditions, thereby influencing subsequent variations in sea ice thickness and concentration. Under anomalous high pressure, \({{DLR}}_{{clear\; sky}}\) increases, leading to a decline in sea ice thickness, and vice versa. Additionally, from a dynamic standpoint, low-level wind-driven sea ice drift helps shape the spatial distribution and extent of sea ice cover. Besides, the impacts of ISM on Arctic sea ice are largely independent of contemporary ENSO. These findings present fresh perspectives on the role of extrapolar phenomena, such as the ISM, in driving variability in Arctic sea ice during the summer months. This enhanced comprehension holds promise for enhancing predictions of changes in summertime Arctic sea ice extent.

北极海冰流失对北半球夏季天气的影响引起了相当大的关注。尽管人们广泛关注这种关系，但热带系统对北极地区的影响相对缺乏探索，只有少数现有研究专门关注动力学或热力学效应。本研究旨在通过检查与印度夏季季风 （ISM） 降雨相关的北极地区气压异常环流来解决这一差距。观测到的异常环流表现出明显的纬向偶极子模式，其特征是加拿大北部和亚洲的异常高压，以及位于格陵兰岛以东的异常低压。通过模型实验的验证表明，ISM 降雨的非绝热加热有助于观测到 ISM 相关环流的形成。北极改变的地表热条件上的环流异常对地表晴空长波辐射 （\（{{DLR}}_{{clear\; sky}}\）） 的调制，从而影响了海冰厚度和浓度的后续变化。在异常高压下，\（{{DLR}}_{{clear\; sky}}\） 增加，导致海冰厚度下降，反之亦然。此外，从动力学的角度来看，低层风驱动的海冰漂移有助于塑造海冰覆盖的空间分布和范围。此外，ISM 对北极海冰的影响在很大程度上独立于当代 ENSO。这些发现为极地现象（如 ISM）在驱动夏季北极海冰变化中的作用提供了新的视角。 这种增强的理解有望增强对夏季北极海冰范围变化的预测。