Global River Forecasting with a Topology-Informed AI Foundation Model. - Hancheng Ren; Gang Zhao 002; Shuo Wang; Louise Slater; Dai Yamazaki; Shu Liu; Jingfang Fan; Shibo Cui; Ziming Yu; Shengyu Kang; Depeng Zuo; Dingzhi Peng; et al. (CoRR, 2026)