Professor Wofsy and associates study the two-way exchange of gases between natural ecosystems and the atmosphere, the emissions, transformations and deposition of atmospheric pollutants, the processes that transport pollutants in the atmosphere, and depletion of stratospheric ozone. February, 1997-Present: Abbott Lawrence Rotch Professor of Atmospheric and Environmental Sciences Department of Earth and Planetary Sciences, Harvard University 2006-Present: Director of Undergraduate Studies, EPS concentration Faculty of Arts and Sciences, Harvard University 2003-2004; 2005-2006: Associate Dean California Institute of Technology November, 2004: Moore Distinguished Scholar Harvard Division of Applied Sciences and Department of Earth and Planetary Sciences, Harvard University February, 1995-February 1997: Gordon McKay Professor of Atmospheric and Environmental Sciences Harvard Division of Engineering and Applied Physics July 1982-February 1995: Senior Research Fellow Harvard Forest, Harvard University July 1990-Present: Associate of the Harvard Forest, Harvard University Harvard Division of Engineering and Applied Physics July 1977-June 1982: Associate Professor of Atmospheric Chemistry Harvard Division of Engineering and Applied Physics September 1973 to June 1977: Lecturer on Atmospheric Chemistry and Research Fellow in the Center for Earth and Planetary Physics B.S., 1966, Chemistry, University of Chicago M.A., 1967, Chemistry, Harvard University Ph.D., 1971, Chemistry, Harvard University