P. V. Doskey
Bldg. 203, ER
Argonne National Laboratory
Argonne, IL 60439
630-252-7662
fax 630-252-5498
pvdoskey@anl.gov

V. R. Kotamarthi
Argonne National Laboratory

This component of DOE/OBER's Atmospheric Chemistry Program (ACP) (1) conducts research on the effect of energy-related trace chemicals on the photochemistry of the atmosphere, (2) investigates the long-range transport of these substances and their transformation products to receptor areas, and (3) provides capabilities to measure nonmethane organic compounds (NMOCs) to other ACP researchers studying photochemistry on regional and local scales. The specific objective of the study is to evaluate the role of atmospheric chemical processes in transporting biogenic NMOCs within the daytime atmospheric boundary layer (ABL). The investigation will test the following hypothesis: The mass of biogenic hydrocarbons that are transported from a forested region to an urban area can be estimated with a three-dimensional chemical-transport model that couples an emission algorithm to the biogenic emission inventory. The approach involves (1) field measurements of vertical concentration profiles of the biogenic hydrocarbons and their gas-phase oxidation products in the daytime ABL above rural areas from an aircraft, (2) measurements of the diurnal variations of the NMOC concentrations at a surface receptor site, and (3) numerical modeling. Collaborative work with Pacific Northwest National Laboratory and Brookhaven National Laboratory involves use of research aircraft.

Some further information can be found in the viewgraphs from a presentation at the Atmospheric Sciences Program Annual Meeting held in February 2001 and the viewgraphs from a presentation at the Atmospheric Sciences Program Annual Meeting held in March 2002.