Dynamic treeline and cryosphere response to pronounced mid-Holocene climatic variability in the US Rocky Mountains - Gregory T. Pederson; Daniel Stahle; David B. McWethy; Matthew Toohey; Johann Jungclaus; Craig Lee; Justin Martin; Mio Alt; Nickolas Kichas; Nathan Chellman; Joseph R. McConnell; Cathy Whitlock (Proceedings of the National Academy of Sciences, 2025)