Multimetric analysis uncovers time-dependent climate forcings from China’s 2.3-fold cropland reactive nitrogen emissions - Peng Xu; Zhenzhong Zeng; Huizhong Shen; Min Hu; Mingxu Liu; Cheng Gong; Yilin Chen; Chaopu Ti; Geng Li; Xuejing Wang; Yi Zheng; Si-Liang Li; et al. (Proceedings of the National Academy of Sciences, 2026)