AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
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Observations of Particle-phase NOy and SOx Species during Nanoparticle Growth Events at CLOUD10
DANIELLE C. DRAPER, Michael J. Lawler, James N. Smith, National Center for Atmospheric Research
Abstract Number: 616 Working Group: Effects of NOx and SO2 on BVOC Oxidation and Organic Aerosol Formation
Abstract Chamber experiments were performed in the CLOUD chamber at CERN in Geneva, Switzerland during the CLOUD10 campaign using atmospherically relevant concentrations of a variety of trace gases, including a-pinene, D-3-carene, O3, NO, and SO2. We present observations of nanoparticle composition from the Thermal Desorption Chemical Ionization Mass Spectrometer (TDCIMS) from experiments exhibiting new particle formation and growth from different chemical precursors, including monoterpene photooxidation and monoterpene photooxidation in the presence of NO and SO2. In the latter set of experiments, NOy and SOx species are both observed in the particle phase, indicating that these precursors react to directly contribute to nanoparticle growth.