Arunabha Ghosh - Council on Energy, Environment, and Water, - UCLA Emmett Institute on Climate Change and the Environment, - C2G2/Carnegie Climate Geoengineering Governance Initiative, - National Center for Atmospheric Research, Edward A. Parson - Council on Energy, Environment, and Water, - UCLA Emmett Institute on Climate Change and the Environment, - C2G2/Carnegie Climate Geoengineering Governance Initiative, - National Center for Atmospheric Research, Cynthia Scharf - Council on Energy, Environment, and Water, - UCLA Emmett Institute on Climate Change and the Environment, - C2G2/Carnegie Climate Geoengineering Governance Initiative, - National Center for Atmospheric Research, Simone Tilmes - Council on Energy, Environment, and Water, - UCLA Emmett Institute on Climate Change and the Environment, - C2G2/Carnegie Climate Geoengineering Governance Initiative, - National Center for Atmospheric Research