Charlie Rex , Richard Staff, Melanie Leng, Jaime Toney, Emma J Pearson, Jonathan Tyler, George Swann, Jack Lacey, Megumi Saito-Kato, Takeshi Nakagawa

The past evolution of the East Asian Monsoon (EAM) was affected by remote climate processes. However, there is uncertainty surrounding these teleconnections and their impact on each seasonal EAM mode during periods of rapid global change. Here we use the unique biannual precipitation patterns of central Japan to reconstruct winter and summer EAM evolution during the last glacial termination (22,000 – 10,000 cal BP). Oxygen isotope analysis of diatoms and hydrogen isotope analysis of n-alkanoic acids from the Lake Suigetsu sediment cores show that in Japan the winter EAM weakened and the summer EAM strengthened with deglaciation. Only the summer mode exhibited variations coeval with stade-interstade fluctuations. A relationship between the summer EAM and Antarctic temperature post-16,000 cal BP supports a remote link to the Southern Hemisphere. These trends were different to continental EAM records and highlight the value of broadening the geographical range of reconstructions to rationalise system heterogeneities.