A44D:
Organic Carbon in the Atmosphere: Reactivity, Budgets, and Lifecycle III

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Session ID#: 16337

Session Description:
The oxidation of organic compounds plays a central role in the chemistry of the troposphere, as it controls the cycling of oxidants and forms key secondary products such as ozone and secondary organic aerosol. Accurately representing such processes requires a detailed understanding of the reactivity, fate, and budget of atmospheric organic compounds under a wide range of conditions, from pristine to anthropogenically-dominated environments. This session will focus on recent advancements in our understanding of the overall atmospheric budget and lifecycle of reactive organic carbon, as enabled by new field, laboratory, and modeling efforts. Of particular interest are studies of rates and products of reactions affecting organic carbon in both the gas and condensed phases, characterization of the reactivity of complex organic mixtures (e.g., by OH reactivity measurements), and new modeling approaches for describing the evolving composition and chemistry of atmospheric organic species.
Primary Convener:  Jesse H Kroll, Massachusetts Institute of Technology, Civil and Environmental Engineering, Cambridge, MA, United States
Conveners:  Jennifer Kaiser, Georgia Institute of Technology, School of Civil and Environmental Engineering, Atlanta, GA, United States and Frank N Keutsch, Harvard University, School of Engineering and Applied Sciences, Department of Chemistry and Chemical Biology and Department of Earth and Planetary Sciences, Cambridge, MA, United States
Chairs:  Frank N Keutsch, Harvard University, School of Engineering and Applied Sciences, Department of Chemistry and Chemical Biology and Department of Earth and Planetary Sciences, Cambridge, MA, United States and Jennifer Kaiser, Georgia Institute of Technology, School of Civil and Environmental Engineering, Atlanta, GA, United States
OSPA Liaison:  Frank N Keutsch, Harvard University, School of Engineering and Applied Sciences, Department of Chemistry and Chemical Biology and Department of Earth and Planetary Sciences, Cambridge, MA, United States
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0317 Chemical kinetic and photochemical properties [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0322 Constituent sources and sinks [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0365 Troposphere: composition and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]

Abstracts Submitted to this Session:

Budget of the OH reactivity in the North China Plain in summer- and wintertime: Results from recent field campaigns (Invited) (118543)
Hendrik Fuchs1, Zhaofeng Tan2, Keding Lu3, Birger Bohn4, Joachim Borchardt5, Sebastian Broch6, Steven S Brown7, Huabin Dong2, Georgios Gkatzelis8, Sebastian Gomm6, Rolf Häseler6, Ling-Yan He9, Thorsten Hohaus6, Andreas Hofzumahaus6, Frank Holland6, Astrid Kiendler-Scharr10, Xin Li5, Ying Liu11, Sihua Lu2, Kyung-Eun Min12, Anna Novelli6, Franz Rohrer13, Min Shao14, Baolin Wang15, Ming Wang16, Yusheng Wu16, Limin Zeng17, Yinsong Zhang16, Robert Wegener6, Andreas Wahner6 and Yuanhang Zhang17, (1)Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Troposphere (IEK-8), Jülich, Germany, (2)Peking University, State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Beijing, China, (3)Peking University, State Key Joint Laboratory or Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Beijing, China, (4)Institute of Energy and Climate Research, IEK-8, Forschungszentrum Jülich, Jülich, Germany, (5)Forschungszentrum Juelich GmbH, Juelich, Germany, (6)Forschungszentrum Jülich GmbH, Jülich 52428, Germany, (7)NOAA, Earth System Research Laboratory, Boulder, CO, United States, (8)Forschungszentrum Jülich, Institute of Climate and Energy Systems, Troposphere (ICE-3), Jülich, Germany, (9)Peking University Shenzhen Graduate School, Shenzhen, China, (10)Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-8: Troposphere, Jülich, Germany, (11)Peking University, School of Earth and Space Sciences, Beijing, China, (12)NOAA Boulder, Boulder, CO, United States, (13)Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-8: Troposphere, Jülich 52428, Germany, (14)Jinan University, College of Environment and Climate, Institute for Environmental and Climate Research, Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou, China, (15)Qilu University of Technology, Beijing, China, (16)Peking University, Beijing, China, (17)Peking University, College of Environmental Sciences and Engineering, Beijing, China
Total OH reactivity as a constraint of model calculated peroxy radical production, and the catalytic efficiency of NOx in O3 production in a boreal forest environment. (128184)
M. Umar Javed1, Korbinian Hens1, Monica Martinez2, Dagmar Kubistin3,4, Anna Novelli1,5, Zeinab Hosaynali Beygi1, Raoul Axinte1, Anke Christine Nölscher1,6, Vinayak Sinha1,7, Wei Song1, Aaron Michael Johnson1, Janeen Auld1,8, Birger Bohn9, Rolf Sander2, Domenico Taraborrelli1,10, Jonathan Williams1, Horst Fischer2, Johannes Lelieveld1 and Hartwig Harder2, (1)Max Planck Institute for Chemistry, Mainz, Germany, (2)Max Planck Institute for Chemistry, Atmospheric Chemistry, Mainz, Germany, (3)Deutscher Wetterdienst (DWD), Hohenpeißenberg, Germany, (4)University of Wollongong, Wollongong, Australia, (5)Forschungszentrum Jülich, IEK8:Troposphere, Jülich, Germany, (6)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (7)Indian Institute of Science Education and Research, Mohali, India, (8)University of Windsor, Department of Chemistry and Biochemistry, Windsor, ON, Canada, (9)Institute of Energy and Climate Research, IEK-8, Forschungszentrum Jülich, Jülich, Germany, (10)Forschungszentrum Jülich, Institute of Energy and Climate Research, Troposphere (IEK-8), Jülich, Germany
Simulating the effect of photochemical aging on the oxidation state and hygroscopicity of organic aerosol (156731)
Alexandra Tsimpidi1, Vlassis Karydis2, Spyros N Pandis3 and Johannes Lelieveld1, (1)Max Planck Institute for Chemistry, Mainz, Germany, (2)Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Jülich, Germany, (3)Carnegie Mellon University, Pittsburgh, United States
Parameterizations of aqSOA formation: Weaknesses and steps to improvements (132079)
Barbara Ervens, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States
Contrasting Ambient Brown Carbon from Primary Emissions and Secondary Production (195321)
Christopher D Cappa1, Xiaolu Zhang1 and Lynn M Russell2, (1)University of California Davis, Civil and Environmental Engineering, Davis, CA, United States, (2)University of California San Diego, La Jolla, CA, United States
Molecular Characterization of Atmospheric Brown Carbon (136302)
Alexander Laskin1, Julia Laskin1, Sergey Nizkorodov2 and Peng Lin1, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)University of California Irvine, Chemistry, Irvine, CA, United States
Interactions between SO2 oxidation and Secondary Organic Aerosol formation through Criegee intermediate chemistry (176253)
Arthur W. H. Chan, University of Toronto, Department of Chemical Engineering and Applied Chemistry, Toronto, ON, Canada, Jianhuai Ye, University of Toronto, Chemical Engineering and Applied Chemistry, Toronto, ON, Canada and Jonathan Abbatt, University of Toronto, Chemistry, Toronto, ON, Canada
Free radical confinement accelerates chemistry in in the heterogeneous oxidation of semisolid organic aerosol (184946)
Aaron A Wiegel1, Kevin R Wilson2, Bill Hinsberg3 and Frances A Houle2, (1)Lawrence Berkeley National Laboratory, Chemical Sciences Division, Berkeley, CA, United States, (2)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (3)Columbia Hill Technical Consulting, Fremont, CA, United States

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