Professor Ronald G. Prinn


Professor Prinn is a Co-Director of the Joint Program on the Science and Policy of Global Change and the Director of the Center for Global Change Science. In these roles, he works extensively with social scientists to link the science, economics and policy aspects of global change. The MIT Integrated Global System Model, which Professor Prinn co-led the development of, is central to this work. The unique integrated global system model couples economics, climate physics and chemistry, and land and ocean ecosystems to estimate uncertainty in climate predictions and analyze proposed climate policies.

A faculty member at MIT since 1971, Professor Prinn is the TEPCO Professor of Atmospheric Science and headed the MIT Department of Earth, Atmospheric and Planetary Sciences from 1998 to 2003.  Along with his work in linking the science, economics and policy aspects of global change, his research interests incorporate the chemistry, dynamics and physics of the atmospheres of the Earth and other planets, and the chemical evolution of atmospheres.

Professor Prinn has made significant contributions to the development of national and international scientific research programs in global change. He leads the Advanced Global Atmospheric Gases Experiment (AGAGE), in which the rates of change of the concentrations of the trace gases involved in the greenhouse effect and ozone depletion have been measured continuously over the globe for the past three decades. Through this work he is pioneering the use of inverse methods, which use such measurements and three-dimensional models to determine trace gas emissions and understand atmospheric chemical processes, especially those processes involving the oxidation capacity of the atmosphere. Professor Prinn has also testified twice to the United States Congress on climate change science and its implications for policy, and was a Lead Author in the Fourth Assessment of the Intergovernmental Panel on Climate Change (IPCC) published in 2007. His work is published in more than 200 articles, reports and volume chapters, and he has served in a variety of leadership capacities and committees throughout his career.

Learn more about Professor Ron Prinn.


Dr. John M. Reilly


Dr. Reilly is a Co-Director of the Joint Program on Global Change and a Senior Lecturer at the Sloan School of Management. As an energy, environmental and agricultural economist, his research is focused on understanding the role of human activities as a contributor to global environmental change and the effects of environmental change on society and the economy. A key element of his work is the integration of models of the global economy as it represents human activity with models of the ocean, atmosphere, and terrestrial vegetation. By understanding the complex interactions of human society with our planet, the goal is to aid in the design of policies that can effectively limit the contribution of human activity to environmental change, to facilitate adaptation to unavoidable change, and to understand the consequences of the deployment of large scale energy systems that will be needed to meet growing energy needs.

Focused on the integrated assessment of climate change, Dr. Reilly’s work is published in more than 150 articles, reports and volume chapters.  He has served in a variety of capacities on the Intergovernmental Panel on Climate Change, was the Co-Chair of the US National Agricultural Assessment on Climate Variability and Change, served on early committees in the Federal government that shaped the direction of the US Global Change Research Program – along with a wide range of other advisory committees. 

Prior to joining MIT in 1998, Dr. Reilly spent 15 years with the US Department of Agriculture’s Economic Research Service, and previously for the Pacific Northwest National Laboratory and the Institute for Energy Analysis, Oak Ridge Associated Universities. He has a Ph.D. (1983) and M.S. (1980) in economics from the University of Pennsylvania, and a BS (1978) from the University of Wisconsin.

Learn more about Dr. John Reilly.


Other Leadership

Anne Slinn, Executive Director for Research

C. Adam Schlosser, Deputy Director

Sergey Paltsev, Deputy Director