Development and comparison of empirical models for all-sky downward longwave radiation estimation at the ocean surface using long-term observations. - Peng, Jianghai; Jiang, Bo; Liang, Hui; Li, Shaopeng; Han, Jiakun; Ingalls, Thomas C.; Cheng, Jie; Yao, Yunjun; Jia, Kun; Zhang, Xiaotong (Atmospheric Measurement Techniques, 2025)