TChem-atm (v2.0.0): scalable performance-portable multiphase atmospheric chemistry. - Díaz-Ibarra, Oscar H.; Frederick, Samuel G.; Curtis, Jeffrey H.; D'Aquino, Zachary; Bosler, Peter A.; Patel, Lekha; Safta, Cosmin; West, Matthew; Riemer, Nicole (Geoscientific Model Development, 2026)