# Keywan Riahi Back to [[Topics/Climate Change Science and Policy Debate/Climate Change Science and Policy Debate|Climate Change Science and Policy Debate]] · [[Topics/Climate Change Science and Policy Debate/Research and Evidence|Research and Evidence]] **Role:** Energy/climate modeller, IIASA; lead author of the RCP8.5 scenario paper (2011). - Program Director, Energy, Climate and Environment, IIASA (Laxenburg, Austria) ⚠️ (title from memory). - Lead author of **Riahi et al. 2011, "RCP 8.5—A scenario of comparatively high greenhouse gas emissions"**, *Climatic Change* 109:33 ([doi](https://doi.org/10.1007/s10584-011-0149-y)). This is the "2011" origin Clack mentions. It was built by IIASA researchers, not the UN or IPCC. - Lead author of the SSP overview (Riahi et al. 2017, *Global Environmental Change*, [doi](https://doi.org/10.1016/j.gloenvcha.2016.05.009)).