Dr Raupach has made pivotal contributions to the understanding of turbulent flow and transport in vegetation canopies. He identified the roughness sublayer just above the canopy, formulated the mixing-layer hypothesis that unifies canopy flow and transport properties, and created the Lagrangian turbulence model now generally used to describe canopy scalar transfer. He developed sound descriptions of soil erosion by wind, particularly the effect of roughness, which now underpin advanced models. He identified fundamental thermodynamic constraints on regional-scale energy balances in heterogeneous landscapes. He has advanced knowledge of carbon-climatehuman interactions by identifying global and regional drivers of accelerating CO2 emissions.