Stephen O. Andersen Stephen O. Andersen Stephen Oliver Andersen (born 17 January 1948) is the American Director of Research at the Institute for Governance and Sustainable Development (IGSD) and is also Senior Expert Member of the Montreal Protocol Technology and Economic Assessment Panel (TEAP) and former TEAP Co-Chair (1989 - 2012). He is considered one of the founders and leading figures in the success of the Montreal Protocol on Substances that Deplete the Stratospheric Ozone Layer. Andersen was born in Logan, Utah, United States, the child of a professor of horticulture and a botanist. He studied business administration for two years at Utah
Montreal Protocol and HCFCs. Thus, in 2009, a study calculated that a fast phasedown of high-GWP HFCs could potentially prevent the equivalent of up to 8.8 Gt CO2-eq "per year" in emissions by 2050. A proposed phasedown of HFCs was hence projected to avoid up to 0.5C of warming by 2100 under the high-HFC growth scenario, and up to 0.35C under the low-HFC growth scenario. Recognizing the opportunity presented for fast and effective phasing down of HFCs through the Montreal Protocol, starting in 2009 the Federated States of Micronesia proposed an amendment to phase down high-GWP HFCs, with the U.S., Canada, and