SPECIAL SESSIONS

Simulation chambers as tools in atmospheric research

Chairs: Falk Mothes (mothes@tropos.de ) , Hartmut Herrmann (hartmut.herrmann@tropos.de) , Jean-Francoise Doussin (Jean-Francois.Doussin@lisa.u-pec.fr)

Within this session results from the frontline of atmospheric mechanism and properties research using atmospheric simulation chamber will be presented and discussed. This includes research about evolution and chemical characterization of gas- and particle-phase products of VOC oxidation, SOA formation and growth from biogenic and anthropogenic sources, multiphase chemistry, chemical and physical transformation of soot, mineral dust or bioaerosol or evolution and aging of biomass burning emission.

The evaluation of the impact of these processes on aerosol optical properties, particle hygroscopicity and CCN activity, ice nucleation activity as well as on pollutants toxicity, health effects or cultural heritage are highly welcome.

Works involving new and/or improved instrumentation as well as refined protocols and their combination with models will also be presented with a special emphasis.

The session is organized by EUROCHAMP-2020 and is widely open for all that are interested.

Aerosols in Earth System Models

Chairs:Ulas Im (ulas@envs.au.dk), Annica Ekman (annica@misu.su.se), Risto Makkonen (risto.makkonen@helsinki.fi)

Earth System models (ESMs) are global climate models, explicitly representing biogeochemical processes that interact with the physical climate and so alter its response to climate forcing from natural and anthropogenic emissions of greenhouse gases and aerosols. Aerosols reflect incoming solar radiation (a direct cooling effect) and alter cloud properties (an indirect cooling effect), as well as absorbing radiation (e.g. black carbon), contributing to the warming of the atmosphere. Therefore they are key players in chemistry-climate feedbacks. ESMs provide valuable insight into climate variability and change, and the role of human activities and possible mitigation actions on future climate change. The session welcomes contributions from studies focusing on, but not limited to,  evaluation of ESMs, natural/anthropogenic aerosol emissions, parameterizations, direct and indirect feedbacks, atmosphere-land-ocean-ice interactions, long range-transport of aerosols,  aerosol radiative forcing, aerosol-cloud interactions in ESMs and climate projections.

Contributions of aerosol sources to health impacts and their indicators

Chairs: Mar Viana (mar.viana@idaea.csis.es) and Daniele Contini (d.contini@isac.cnr.it)

Atmospheric aerosols result in adverse health effects depending on their chemical-physical properties, which are strongly linked to their pollution sources. It is becoming more and more important to gather information regarding the contribution to health indicators of specific pollution sources to support robust environmental planning and enforcement of mitigation strategies. This session aims to cover advanced source apportionment application devoted to characterize the contribution of natural and anthropogenic sources to a wide variety of health indicators, ranging from health impact assessment (HIA) and contribution to the burden of disease, to oxidative potential and in-vitro toxicity (eco- and cytotoxic potential).

Data Interpretation with special focus on Actris

Contact persons: Alfred Wiedensohler (alfred.wiedensohler@tropos.de)

WG „Atmospheric Aerosol Studies“ and „Aerosol Measurement Techniques“ would like to propose a joint Special Session on Data Interpretation with special focus on Actris.