Gas-phase reactions accelerate nitrate formation in spring and early summer in a megacity of the Sichuan Basin, China. - Li, Yi; Tang, Yixuan; Chen, Dongyang; Song, Tianli; Feng, Miao; Song, Danlin; Tan, Qinwen; Jiang, Hongbin; Wang, Pu; Zhou, Li; Yang, Fumo (Journal of Environmental Sciences (Elsevier), 2026)