Atmospheric Chemistry and Physics The Atmospheric Chemistry and Canopy Exchange Simulation

Abstract. Forest canopies are primary emission sources of biogenic volatile organic compounds (BVOCs) and have the potential to significantly influence the formation and distribution of secondary organic aerosol (SOA) mass. Biogenically-derived SOA formed as a result of emissions from the widespread forests across the globe may affect air quality in populated areas, degrade atmospheric visibility, and affect climate through direct and indirect forcings. In an effort to better understand the formation of SOA mass from forest emissions, a 1-D column model of the multi-phase physical and chemical processes occurring within and just above a vegetative canopy is being developed. An ini-tial, gas-phase-only version of this model, the Atmospheric Chemistry and Canopy Exchange Simulation System (AC-CESS), includes processes accounting for the emission o