The chemical composition of the earth's atmosphere is changing rapidly due largely to human activities such as combustion of fossil fuel, clearing of forests, and agriculture. Concentrations of many important trace gases (CO₂, CH₄, N₂O) and aerosols are increasing, and stratospheric ozone levels are decreasing, with potentially deleterious effects including climatic warming, regional and urban air pollution, and increased exposure to solar ultraviolet light.   In order to make wise decisions on the future development of the world's resources, we need quantitative information defining the sources and sinks for the important atmospheric gases and deeper understanding of the rates for chemical transformation and for transport in the atmosphere. We seek to understand how the atmosphere works as a chemical and physical system. Click on links below to learn more about our research. 

Exhibition Hall of results presented in recent talks and posters. 
 
Employment Opportunities 
 

Atmosphere-Biosphere Exchange

• Harvard Forest, MA : Temperate forest trace gases and fluxes. 
• Thompson, Manitoba : Boreal forest trace gases and fluxes. 
• Tapajós Forest, Brazil (LBA) : Tropical forest trace gases and fluxes.  
• COBRA : Airborne measurements of regional fluxes of CO and CO₂

Return to the Atmospheric Sciences home page.
Updated: 25 January 2008