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EMISSION, FATE, AND CONTRIBUTION OF BIOGENIC VOLATILE ORGANIC COMPOUNDS TO ORGANIC AEROSOL FORMATION IN THE PRESENCE OF ANTHROPOGENIC POLLUTION: MEASUREMENTS AND MODELING DURING SOAS
Impact/Purpose:
The overall goals of this project are to quantify biogenic Volatile Organic Compound (VOC) emissions and VOC deposition to terrestrial ecosystems, characterize VOC atmospheric oxidation, and understand the impact of anthropogenic pollution on secondary organic aerosol (SOA) formation. Specific objectives include: constrain and understand biogenic VOC (BVOC) emission, oxidation and deposition processes; elucidate SOA formation pathways under polluted and clean conditions; evaluate contributions of biogenic and anthropogenic VOC emissions to regional SOA; search for previously unidentified/unmeasured semivolatile organics (SVOC); investigate the impacts of urban/rural emission patterns on climate.
Description:
The primary deliverable products will be measurements of VOC emission and deposition on spatial and temporal scales that are optimal for evaluating and improving regional models. Outcomes will include approaches for quantifying VOC emission uncertainties and identifying missing VOC emission sources that can be utilized by the scientific community. The proposed work will also improve understanding of the processes controlling BVOC emission and VOC deposition variations that will lead to improved emission and deposition representations in models. The proposed work directly addresses the solicitation by addressing how anthropogenic emissions influence the oxidation pathway of BVOCs and the subsequent formation of SOA. The overall benefit of this project will be improving regional VOC emission and SOA simulations that enable the development of strategies that will enhance efforts to improve and maintain clean air.