I am head of the Ultrafine Aerosols Research Group in the NESL’s Atmospheric Chemistry Division. I encourage you to visit the group web pages and learn more about who we are and what we do! I am also presently a visiting professor in the Aerosol Physics Group at the University of Eastern Finland, Kuopio.
I am interested in ultrafine particles in the atmosphere. These are particles with diameters smaller than 100 nm, or about a thousandth the diameter of a human hair. Although these particles are very small, they can have huge effects to our health and climate:
I am an experimentalist, meaning I use both
controlled experiments in my laboratory as well as observations in a variety of locales to study
ultrafine particle physical and chemical properties.
The most important tool that I use is called a
Thermal Desorption Chemical Ionization Mass Spectrometer
The TDCIMS was developed in collaboration with Peter McMurry's group at the University of Minnesota. This instrument allows us to measure the chemical composition of particles as small as 4 nm in diameter.