Distinct dual-isotopic signatures of major methane sources in South Asia. - Yao, Peng; Belec, Katja; Holmstrand, Henry; Balacky, Josh; Salam, Abdus; Budhavant, Krishnakant; Manoj, Mohanan Remani; Joy, Khaled Shaifullah; Hossain, Md. Alamin; Singh, Atinderpal; Patel, Anil; Rastogi, Neeraj; et al. (Atmospheric Chemistry & Physics, 2026)