Large variability of nitrate load estimated from sparse measurements by typical methods in Atlantic Canada - Liang, Kang; Jiang, Yefang; Fuller, Keith; Cordeiro, Marcos; Zhang, Xuesong; Qi, Junyu; Geng, Xiaoyuan; Liu, Tao; Zhang, Qian; Azimi, Mohammad Amir; Meng, Fan-Rui (Frontiers in Environmental Science, 2025)