Virtual Conference Schedule
The 2020 ACM Conference will be completely virtual. From the session presentations to the happy hours, we will continue to host an interactive and informative experience. Due to the conference being fully virtual, we have decided to expand it out over two weeks in pieces to allow both for maximum concentration during each session and for you to attend to your other work and family obligations.
All sessions, except Fridays, will be three hours long starting at 8:00 AM PST / 11:00 AM EST / 4:00 PM GMT. Fridays will last one hour thirty minutes to two hours. Days with Happy Hours or Coffee Hours will be extended by one extra hour.
Review the list of ACM Conference Abstracts
Thursday, November 5th
8:00 a.m. PT - 11:00 a.m. PT
Current Atmospheric Chemical Mechanisms Training
Training Topics:
- MCM: Andrew Rickard, Associate Professor, National Centre for Atmospheric Science
- SAPRC: Bill Carter, Research Chemist, UC Riverside
- RACM2/GACM: William Stockwell, Professor, University of Texas as El Paso & Wendy Goliff, Assistant Research Engineer, UC Riverside
- CB: Greg Yarwood, Principal, Ramboll
- Moderator: Ajith Kaduwela, Senior Scientist ‐ California Air Resources Board/University of California at Davis
Description:
This training will start with an overview of the Master Chemical Mechanism (MCM) by Dr. Andrew Rickard, University of York. He will discuss its origins, philosophy, applications and future development strategy. Then Dr. Bill Carter, UC Riverside, will describe the history, objectives, and approach used in the development of the SAPRC mechanisms and the SAPRC mechanism generation system (MechGen) and their current status and plans. The approach used is an example of that advocated in the "New Directions" article of Kaduwela et al (2016). Next, Dr. William Stockwell, University of Texas at El Paso, will discuss RADM/RACM/GACM Mechanisms. The Regional Acid Deposition Mechanism (versions 1 and 2) and the Regional Atmospheric Chemistry Mechanism (versions 1 and 2) constitute a mechanism series designed for 3-D photochemical grid models. The design philosophy of this series is to balance completeness, compactness and the necessary speculations that are needed to make air quality models that are creditable for policymakers. Dr. Wendy Goliff, Cal Poly, Pomona, will continue the discussion on RACM2 because chemical mechanisms are an important bridge between laboratory data and modeling. Finally, Dr. Greg Yarwood, Ramboll, will review the development of Carbon Bond (CB) mechanisms leading to the current version, namely revision 5 of CB6 (CB6r5). He will discuss a formal uncertainty analysis of CB6r4 that considers the impact of uncertainty in each rate constant and product stoichiometric coefficient of this mechanism.
NOTE: Separate no-cost registration required. Learn more about the training and register here.
Friday, November 6th
8:00 a.m. PT - 10:00 a.m. PT
The Future of Atmospheric Chemical Mechanism Development: A Panel Discussion of Possible Forward Paths
Panelists:
- EPA-OAQPS: Heather Simon, Office of Air Quality Planning & Standards, US EPA
- CARB: Jeremy Avise, Branch Chief, Modeling and Meteorology Branch, California Air Resources Board
- MCM: Andrew Rickard, Associate Professor, National Centre for Atmospheric Science
- SAPRC: Bill Carter, Research Chemist, UC Riverside
- RACM2/GACM: William Stockwell, Professor, University of Texas as El Paso & Rosa Fitzgerald, Professor & UTEP Representative, NOAA
- CB: Greg Yarwood, Principal, Ramboll & Rahul Zaveri, Senior Scientist, Atmospheric Sciences & Global Change Division, Pacific Northwest National Laboratory
- Moderator: Ajith Kaduwela, Senior Scientist ‐ California Air Resources Board/University of California at Davis
Description:
Kaduwela et al. (2015) and Stockwell et al. (2020) present two differing views on the further development of gas-phase atmospheric chemical mechanisms. Kaduwela et al. call for the reliance on master chemical mechanisms, that are as complete as possible, to develop reduced chemical schemes for air quality modeling for public policy development. It is argued that this approach provides direct links between fundamental chemistry and air quality modeling applications. This view places a strong emphasis on examining all non-negligible chemical reaction paths.
Stockwell et al. recognize that master chemical mechanisms are worthy research endeavors. But they are concerned that reliance on the creation of a very large, explicit mechanism as the first step may involve an extensive extrapolation of SAR data that may go too far beyond the available experimental database. They are concerned that the master mechanism approach may introduce greater uncertainty into public policy modeling. Methods based on data mining, machine learning, data assimilation or similar mathematical approaches may provide the policy community with more reliable modeling tools.
Both Kaduwela et al. and Stockwell et al. agree that expanding the available chemical database, including laboratory, chamber and field data, are extremely important to the development of future atmospheric chemistry mechanisms.
This panel discussion will follow on the background provided in the descriptions of various current mechanism development efforts on the previous day, but will focus specifically on the differing views on the future of mechanism development. We intend this to be a discussion and not a debate. The panel will consist of several current mechanism developers and will include short opening statements from each perspective. Following that, there will be a discussion between the panelists and the audience. We will clearly delineate the specific areas of agreement, disagreement and possible forward paths for the mechanism development community.
NOTE: Separate no-cost registration required. Learn more about the panel and register here.
Monday, November 9th
8:00 a.m. PT - 11:15 a.m. PT
Fundamental Oxidation Chemistry (Part 1)
Principal Presentations
- CRI-HOM: A novel chemical mechanism for simulating Highly Oxygenated Organic Molecules (HOMs) in global chemistry-aerosol-climate models- James Weber, University of Cambridge
- A new database for the kinetics of the gas-phase atmospheric reactions of organic compounds- Max McGillen, ICARE, Centre national de la recherche scientifique
- Photoproduction of singlet oxygen from aqueous organic aerosols- Nadine Borduas-Dedekind, ETH Zurich
- Primary radical effectiveness: Does the nature of the primary radical matter for ozone production?- Pete Edwards, University of York
- Singlet (1Δg) O2 as an efficient tropospheric oxidizing agent: the gas phase reaction with the simplest Criegee intermediate- SAPTARSHI SARKAR, MALAVIYA NATIONAL INSTITUTE OF TECHNOLOGY JAIPUR
- Formic Acid Catalyzed Isomerization and Adduct Formation of an Isoprene-Derived Criegee Intermediate: Experiment and Theory- Michael Vansco, University of Pennsylvania
- Direct measurements of vinoxy radicals and formaldehyde from ozonolysis of trans- and cis-2-butenes: Quantification of syn- and anti-conformers of Criegee intermediate and new insights into OH radical formation mechanism- Mixtli Campos, University of California, Riverside
- Mechanisms and yields of OCS from the low NOx oxidation of dimethyl sulfide- Christopher Jernigan, University of Wisconsin - Madison
Lightning Talks
- Mechanistic Investigation of the Aqueous-Phase OH Oxidation of Pinic Acid- Ran Zhao, University of Alberta
- Ammonolysis of ketene as a potential secondary source of tropospheric acetamide: a theoretical investigation- SAPTARSHI SARKAR, MALAVIYA NATIONAL INSTITUTE OF TECHNOLOGY JAIPUR
- Particulate Matter (PM) chemical composition in different size fractions on Metropolitan Area of São Paulo (MASP)- Victória Peli, IAG/USP
- Oxidized Amines Enhance Particle Formation More Than Amines- Nanna Myllys, UC Irvine
Tuesday, November 10th
8:00 a.m. PT - 11:15 a.m. PT
Fundamental Oxidation Chemistry (Part 2)
Principal Presentations
- Theory-based structure-activity relationships- Luc Vereecken, Forschungszentrum Jülich GmbH
- CANCELLED: Effect of Water Vapor on Oxidation of Aromatic Compounds- Liming Wang, School of Chemistry & Chemical Engineering, South China University of Technology
- Structure-Activity Relations for Organic Photo-processes, Part 1: Absorption Cross Sections- Sasha Madronich, NCAR
- Unlumping monoterpenes: Identification of unique first-generation oxidation pathways for the most prevalent cyclic monoterpenes- Danielle Draper, University of California, Irvine
- Experimental and theoretical study on the impact of a nitrate group on the chemistry of alkoxy radicals- Anna Novelli, Institute for Energy and Climate Research, Forschungszentrum Jülich
- New Insights into the Radical Chemistry and Product Distribution in the OH-initiated Benzene Oxidation- Lu Xu, California Institute of Technology
- A new mechanstic overview for the removal of phenolic substituent from atmosphere in dark phase and its atmospheric importance- Koushik Mondal, Indian Association for the Cultivation of Science
- Chlorine radical oxidation of alkanes: effects of structural branching, NOx, and relative humidity- Leif Jahn, University of Texas at Austin
Lightning Talks
- Laboratory simulations of multiday chemical oxidation of organic carbon in the atmosphere- Lesly Franco, Massachusetts Institute of Technology
- Novel reactions and treatments of atmospheric peroxides- Keith Kuwata, Macalester College
- Characterization of reactive gases during BIO-MAIDO campaign along the Maïdo slope on Indian Ocean tropical island (Reunion Island).- Manon Rocco, LaMP
- Molecular understanding of biogenic volatile organic compound emissions and their atmospheric oxidation products as function of climate change-induced stress on plants- Ugo Molteni, Department of Chemistry, University of Milan, 20133 Milan, Italy. ETH Zurich Institute for Atmospheric and Climate Science, ETH Zurich, 8092 Zurich, Switzerland
Wednesday, November 11th
No Sessions
Thursday, November 12th
8:00 a.m. PT - 11:15 a.m. PT
Fundamental Oxidation Chemistry (Part 3)
Principal Presentations
- Photosensitization is in the air: A new pathway for sulfate formation in the atmosphere- Christian George, CNRS-IRCELYON
- Incorporation of Detailed Gas-Phase Furan Mechanism into a Young Biomass Burning Plume Box Model- Benjamin Brown-Steiner, Atmospheric and Environmental Research
- Evaluating the sensitivity of radical chemistry and ozone formation to ambient VOCs and NOx in Beijing- Lisa Whalley, NCAS, University of Leeds
- Direct measurements of the kinetics of the reactions between the Criegee intermediates CH2OO and CH3CHOO and SO2- Lavinia Onel, School of Chemistry, University of Leeds
COVID and Other Extreme Events
Principal Presentations
- The effect of COVID lockdown on the atmospheric air quality in China and northern Italy.- Frederico Bianchi, University of Helsinki
- Modeling the effects of COVID-19 measures on air quality using a chemical transport model: impacts on the Po Valley and the Swiss Plateau regions- Giancarlo Ciarelli, University of Helsinki. Institute for Atmospheric and Earth System Research (INAR).
- UK surface NO2 levels dropped by 42% during the COVID-19 lockdown: impact on surface O3- James Lee, University of York
- Minimal climate impacts from short-lived climate forcers following emission reductions related to the COVID-19 pandemic- James Weber, Univeristy of Cambridge
- Ozone pollution in the North China Plain spreading into the late-winter haze season- Ke Li, Harvard University
- How vegetation feedbacks during drought worsen ozone air pollution extremes in Europe, North America and Asia- Meiyun Lin, Princeton University Program in Atmospheric and Oceanic Sciences and NOAA Geophysical Fluid Dynamics Laboratory
Lightning Talks
None
Friday, November 13th
8:00 a.m. PT - 11:15 a.m. PT
Wildfire Chemistry
Principal Presentations
- Cl(2PJ) + Furan-2,5-dione (C4H2O3, maleic anhydride) reaction in the gas phase: Temperature and Pressure dependent rate coefficients, end-products, reaction mechanism and atmospheric implications- APARAJEO CHATTOPADHYAY, NOAA Boulder and CIRES, University of Colorado Boulder
- The chemical composition of Australian bushfire smoke and implications for population exposure during the 2019/2020 black summer bushfire crisis.- Clare Murphy (Paton-Walsh), University of Wollongong
- Detailed examination of the chemistry in fresh wildfire plumes using GECKO-A- Frank Flocke, NCAR/ACOM
- Updating chemical mechanisms to include the OH oxidation of key reactive biomass burning non-methane organic gases- Matthew Coggon, CIRES / NOAA
- Summer PM2.5 pollution extremes caused by wildfires over the western United States during 2017–2018- Yuanyu Xie, Princeton University
- Organic Chemical Composition of Gases and Particles Measured During the October 2017 Northern California Wildfire Plumes- Yutong Liang, UC Berkeley
- Wildfire smoke at the transition from day to night to day - when all oxidants are at play.- Zachary Decker, CU/CIRES/NOAA
Monday, November 16th
8:00 a.m. PT - 11:15 a.m. PT
Indoor Chemistry and Emerging Anthropogenic Pollutants
Principal Presentations
- Emissions of Volatile Chemical Products (VCPs) in China: insights from estimation of emission inventory, measurements of emission sources and ambient air- Bin Yuan, Jinan University
- Developing Models to Understand Atmospheric Reactions of Per- and Polyfluoroalkyl Substances (PFAS)- Emma D'Ambro, US EPA
- The Human Forest: Understanding the Impacts of Volatile Chemical Product Emissions to Urban Air Quality- Georgios Gkatzelis, Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Jülich GmbH, Jülich, Germany
- Fast Unimolecular Reaction of Ozonolysis Initiated First Generation Peroxy Radicals of Limonene and its Impact on Indoor Chemistry- Jing Chen, University of Copenhagen
- Indoor aerosol dynamics during cooking and cleaning activities: Insights from the HOMEChem study- Marina Vance, University of Colorado Boulder
- Atmospheric fate of a new polyfluoroalkyl building block, C3F7OCHFCF2SCH2CH2OH- Shira Joudan, York University
- Chemistry of perfluoroalkyl substances (PFAS): Formation and fate of strong atmospheric acids- Cora Young, York University
- The Wonderful World of Indoor Air Chemistry: Insights from a Detailed Chemical Model.- Nicola Carslaw, University of York
Lightning Talks
- A boron dipyrromethene (BODIPY) based probe for selective passive sampling of atmospheric HONO indoors- Seyed Danial Nodeh Farahani, York Univeristy
- Analysis of Indoor/Outdoor ultrafine particles inside a retirement community in São Paulo, Brazil, and the potential health risk- Natannael Almeida Sousa, University of São Paulo
- Auto-Oxidation Mechanisms of Volatile Silicon Compounds in the Atmosphere- Zhonghua Ren, University of Melbourne
- Indoor photochemistry: development of reference sensitizers for singlet oxygen quantum yield measurements- Sebastian Zala, ETH Zürich, Department of Environmental System Science
Tuesday, November 17th
8:00 a.m. PT - 11:15 a.m. PT
New Tools for 21st Century Air Quality Problems
Principal Presentations
- GEOS-Chem as a community model for air quality on urban to global scales in the satellite era- Daniel Jacob, Harvard University
- Multi-scale modeling of air quality and mechanism comparison with MUSICA- Louisa Emmons, National Center for Atmospheric Research
- Using TROPOMI to assess nitrogen dioxide air pollution inequality in major U.S. cities- Mary Angelique G. Demetillo, University of Virginia
- Low-cost sensor platform: an emerging tool for air quality studies- Lekan Popoola, University of Cambridge
- Multiphase and in-particle processes affecting SOA formation from organic compounds oxidation- Jean-Francois Doussin, Interuniversity Laboratory of Atmospheric Systems (LISA), CNRS UMR 7583, UPEC, UP and IPSL
- Oxidation of anthropogenic hydrocarbons – “unimolecular” autoxidation vs sequential ageing- Matti Rissanen, Tampere University
- Automating the Search for New Pathways in Atmospheric Oxidation Chemistry- Victoria Barber, MIT
- Graph Theory and Atmospheric Chemistry- Sam Silva, Pacific Northwest National Laboratory
Lightning Talks
- A diagnostic package to facilitate and enhance chemical mechanism implementations within regional and global atmospheric chemistry models- Julie Nicely, U. of Maryland/NASA GSFC
- Trace gases and organic aerosol at a rural site in Vietnam during large scale biomass burning- Simone Pieber, Empa
- Precipitation chemistry in a Brazilian rural area: Alkaline species behavior and agricultural inputs- Jaqueline Pereira, Universidade Federal de Lavras
Wednesday, November 18th
8:00 a.m. PT - 11:15 a.m. PT
Current and New Atmospheric Chemical Mechanisms
Principal Presentations
- The development and application of HOM formation mechanisms for use in atmospheric models – updates, improvements and challenges- Mikael Ehn, University of Helsinki
- GACM: Global Atmospheric Chemical Mechanism- Emily Saunders, Howard University
- The Importance of More Complex Isoprene and Terpene Chemistry for Simulating Surface Ozone in the Southeastern U.S. at Varying Horizontal Resolutions- Rebecca Schwantes, CIRES/NOAA/NCAR
- Intercomparison and optimization of aromatic oxidation mechanisms- Kelvin Bates, Harvard University & University of California Davis
- Kinetic neural networks for atmospheric chemistry surrogate modeling- Christopher Tessum, University of Illinois
- Atmospheric Autoxidation of Amines- Kristian H. Møller, Department of Chemistry, University of Copenhagen
- Evolution of OH reactivity in low-NO volatile organic compound photooxidation investigated by the fully explicit GECKO-A model- Zhe Peng, University of Colorado Boulder
- Towards a full representation of alkene ozonolysis for atmospheric chemistry modeling- Mike Newland, University of York
Lightning Talks
- A recursive neural network chemical solver for fast long-term global simulations of atmospheric composition- Makoto Kelp, Harvard University
- Mechanical study of toluene oxidation: development of a simplified chemical scheme for SOA formation- Victor Lannuque, CEREA, Joint laboratory École des Ponts ParisTech and EdF R&D, Marne la Vallée, France
- Mechanistic Insights into the Night-time Chemistry of Isoprene- Alfred Mayhew, University of York
- Impacts of mechanistic changes in the oxidation of dimethyl sulfide on tropospheric chemistry and climate- Alexander ARCHIBALD, University of Cambridge & NCAS-Climate
Thursday, November 19th
8:00 a.m. PT - 10:45 a.m. PT
Atmospheric Chemistry in Health and Regulatory Applications
Principal Presentations
- Ozone trend and its response to emission reductions in the South Coast of California- Chenxia Cai, California Air Resources Board
- Persistent heavy winter nitrate pollution driven by increased photochemical oxidants in northern China- Tao Wang, Hong Kong Polytechnic University
- An odd oxygen framework for assessing NOx and VOC emission controls to reduce wintertime ammonium nitrate pollution- Caroline Womack, CIRES/NOAA CSL
- The Influence of Chemical Feedbacks on Wintertime Air Quality’s Response to Emissions Reductions- Lyatt Jaeglé, University of Washington
- Comparing the Air Quality Impacts of Electrification and Gaseous Renewable Fuels- Michael MacKinnon, Advanced Power and Energy Program, UC Irvine
- How Much Further Do NOx Emissions Need to Decrease Before We Achieve Ozone Benefits in California?- Michael Kleeman, UC Davis
- Molecular mechanisms behind the health impacts of several organic aerosol components- Fatemeh Keshavarz, Institute for Atmospheric and Earth System Research, Faculty of Science, University of Helsinki, FI-00014, Finland
Lightning Talks
None
Friday, November 20th
8:00 a.m. PT - 9:30 a.m. PT
Keynote: How Reactive Organic Carbon Fuels Atmospheric Chemistry
Organic molecules in the atmosphere play a major role in the production of secondary pollutants such as ozone and particles. These in turn, are central to some of the major environmental issues of our times (climate change, air pollution).Despite the vital role that these species play in our global environment, our understanding has been hampered by the complexity of this class of species and a fractured approach to studying their chemical evolution. In this talk I’ll discuss the overall role of ROC in tropospheric chemistry, as well as recent progress and remaining challenges in understanding this role. I will also use field measurements from the CalNex, SOAS, and ATom field campaigns to contrast the abundance and role of ROC in terms of OH reactivity, ozone and SOA production.