Vertical Gradient of Nitryl Chloride and Implications for Atmospheric Photochemistry in Pearl River Delta, China, during Wintertime - Haichao Wang; Yuan, Bin; Zhang, Xiaoxiao; Jie Wang; Xiaorui Chen; Wang, Yiming; Qin, Yujie; Xiaobing Li; Zhang, Chunsheng; Liu, Aiming (2025)