My graduate work focused on measurements of the
halogen radicals ClO and BrO from scientific balloons and high altitude
aircraft. Click
here
for references to papers on this work.
Lightweight halogen oxide instrument (in center of payload) developed at Harvard University. This photo was taken during a prelaunch test at Ft. Sumner, NM in March 1991.
Inflation of the balloon at sunrise on Easter Sunday morning, 31 March 1991, at Ft. Sumner, NM.
The Airborne Arctic Stratospheric Expedition (AASE) II was an eight-month-long aircraft campaign designed to study the causes of ozone loss in the Arctic and northern midlatitudes. Along with Darin Toohey, I made halogen oxide measurements from the NASA ER-2 aircraft. We spent two months at NASA Ames Research Center (Moffett Field, CA); one month at Eielson AFB (Fairbanks, AK), and five months at Bangor International Airport (Bangor, ME).
I still maintain an interest in stratospheric halogen chemistry related to polar and midlatitude ozone loss, and have been involved with studies of the halogen photochemistry and of exhaust from chlorine-containing solid rocket motors (e.g., Space Shuttle). See Darin Toohey's page for photos of the NASA WB-57F aircraft and instrumentation used in these later missions.NASA File photo of the ER-2 high altitude aircraft just after takeoff from NASA Dryden (Edwards AFB).
