Current Projects:

Acquisition of Instrumentation for Enhancing Studies of Aerosol-Cloud Interactions

· National Science Foundation Major Research Instrumentation

· September 2005–August 2008.

Investigation of Hygroscopicity and Cloud and Ice-Nucleating Activities of Carbonaceous and Combustion-Derived Aerosol Particles

· NASA

· January 2006–December 2008.

Investigation of Hygroscopicity and Cloud-and-Ice Nucleating Activities of Combustion Aerosols

· DOE-NIGEC

· September 2005-August 2008.

Laboratory measurements of aerosol scattering and extinction properties

· DOE-NIGEC

· September 2006-August 2008.

Modeling studies of aerosol-cold cloud interactions

· NASA

· December 2005–December 2008.

Processing of Organic Aerosols by Heterogeneous and Multiphase Processes

· NOAA

· January 2005-December 2008.

Laboratory and Field Measurements of Aerosol Particle Effects on Cloud Ice Formation in the Amazon Basin

• NASA
• September 2004- September 2008

Airborne nitrogen concentrations and deposition in Rocky Mountain National Park

· National Park Service

· September 2007-August 2008.

Characterizing Wildland Fire Particulate Matter Emissions and their Air Quality/Visibility Impacts

· National Park Service and the Joint Fire Science Program

· September 2007- February 2009.

Improved Treatment of Atmospheric Organic Particulate Matter Concentrations from Biomass Combustion Emissions

· Environmental Protection Agency

· January 2008- December 2010.