Rick Stimpfle


I joined the Anderson Group as a post-doctoral fellow in Nov 1979, shortly after completing graduate school at the University of Colorado in Boulder. My work at UC consisted of laboratory work at the NOAA labs, with Carleton J. Howard and Eldon E. Ferguson, investigating ClO radical reactions involved in ozone loss in the stratosphere. The title of my thesis was: Laser Magnetic Resonance Detection of ClO and Kinetics of the Reactions of ClO with NO2 and HO2. I received a B. S. in Physical Chemistry from The College of William and Mary, Williamsburg, VA, in June 1975.

I came to Harvard with the express intention of participating in field measurements. The first project involved measuring OH and HO2 in the stratosphere, in-situ, using a resonance fluorescence instrument incorporating a copper vapor laser on a balloon-borne platform. We made successful measurements out of Palestine TX in the summers of 1987, 88 and 89.

Around 1990 my focus shifted to chlorine in the stratosphere. I participated in balloon-borne measurements of ClO from Ft Sumner, NM and Sondrestrom, Greenland in 1991 and 1992, respectively. After those missions I switched to an aircraft borne platform using the NASA ER-2 aircraft. Over the years measurements of species such as BrO, ClO, ClONO2, and ClOOCl were made from a variety of locations, including California, Alaska, Hawaii, New Zealand and Sweden.

Although I retired from Harvard in Jul 2009, I returned to the Anderson Group in 2010, in part-time mode, to provide support with the current halogen measurement program.