Scientific Program

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Scientific Program Committee Co-Chairs

Lucy Carpenter and Judith Hoelzemann

Keynote Speakers

Lidia Morawska, Australia

Vaishali Naik, USA

Jon Abbatt, Canada

1. Fundamentals

Chairs: Christian George and Parisa Aryia

Invited Speakers: Merete Bilde (Denmark) and Jonathan Reid (UK)

Understanding atmospheric physicochemical processes is pivotal for a quantitative description of its past, current and future composition. This is why this session is inviting curiosity oriented and fundamental contributions that will provide a better understanding of key atmospheric processes from aerosol optics, gas-phase, multiphase and heterogeneous kinetics, new aerosol formation and transformations, novel analytical approaches, to theoretical and numerical approaches. Contributions on emerging contaminants and environmental issues are also welcome.

2. Integrated Observations, Modeling, and Analysis

Chairs: Robyn Schofield and Meehye Lee

Invited Speakers: Owen Cooper (USA) and Martin Shultz (German) as a joint presentation on TOAR, and Xuemei Wang (China)

Analyzing and interpreting simulations and data from various platforms across multiple spatial and time scales can identify critical issues and underpin predictions of future changes in the atmospheric environment. This session aims to facilitate discussion and integration of major findings from multidisciplinary approaches in atmospheric chemistry research, which will promote scientific understanding and support decision making.  We welcome contributions detailing the numerical analysis of data from observations and models, model evaluation against observations, application of such data for prediction, data assimilation, and machine learning through high performance computing.  All types of observation are in scope, from surface to the upper atmosphere, and we also welcome studies of new methodological development in measurement and theory including physical, chemical, and statistical models.

3. Air Quality and Impacts

Chairs: Abdus Salam and NĂ©stor Rojas

Invited Speakers: Maria de Fatima Andrade (Brazil) and S. Suresh Babu (India)

This session highlights the state of air quality around the globe, the sources of pollutant emissions affecting air quality, and their impacts on health and the environment. This includes: studies on air quality in urban and rural areas and in microenvironments;  the strength and toxicity of emission sources, their contribution to concentrations in the atmosphere, and the successes and challenges to reduce emissions; the transport and transformation of air pollutants in the atmosphere; exposure to air pollutants and their impacts on health; and the impacts of air pollutants on the environment and on climate.

4. Atmospheric Chemistry at the Interfaces

Chairs: Mei Zheng and Markus Ammann

Invited Speakers: Mathew Evans (UK) and Tara Kahan (Canada)

Interfaces separate environmental compartments at the larger scale and represent transfer points for important biogeochemical and atmospheric cycles. Interfaces also separate liquid, solid and gas phase entities at the molecular level and are implicated in nucleation processes, phase transfer, multiphase chemistry and photochemistry. They affect the climate impact of aerosol particles, exchange between oceans and terrestrial ecosystems and the atmosphere and influence cloud properties. This session focuses on laboratory, field and modelling studies highlighting the importance of the small scale interfacial properties and processes for these large scale exchange and cycling processes.

5. Future Perspectives and Policy

Chairs: Laura Gallardo, Judith Hoelzemann, and Clare Murphy

Invited Speakers: Hiroshi Tanimoto and Sally Pusede (USA)

This session looks to the future, presenting a mixture of policy, innovation and new technologies. This includes forecasting/modelling of atmospheric chemistry and composition in the years and decades ahead; emerging technologies that will shape the future; and policies and solutions for our future atmosphere. The session also welcomes submissions about new approaches to engaging the public, policy makers and other communities and stakeholders, as well as emerging research topics or geographical areas of special interest.

NOTE: COVID-19 Submissions

The COVID-19 crisis provided a unique experiment to study how the atmosphere responds to emission cuts on a massive scale. Levels of some pollutants declined sharply in urban regions at the start of the lockdown, then returned quickly as fossil fuel use rebounded. Other pollutants such as particulate matter, which is both emitted directly and formed in the atmosphere from chemical reactions, have complex dependencies on emission changes. The COVID-19 crisis provides an unplanned opportunity to study the interdependencies and variables driving pollutant trends, as well as their impact on health, ecosystems and climate, offering valuable insights for air quality management. The crisis has also initiated a reshape of transport and associated infrastructure in many cities, and a change in the economic priorities of some nations; the anticipated future of pollutant emissions may be different now than in the pre-Covid world. The impacts of COVID-19 cut across all of the Session Topics of the IGAC2022 conference, and we welcome COVID19-related submissions in all sessions.