Atmospheric oxidation of stress induced emissions from vegetation - its role for aerosol formation
Research Project , 2016 – 2018

Our hypothesis, based on our recent case study, is that stress-induced emissions (SIE) are a significant source to ambient organic aerosol and must be included in atmosphere-climate-vegetation feedbacks.

The aim is to understand and quantify how SIE from vegetation can influences biogenic secondary organic aerosol (SOA) formation. We will develop an understanding in how SIE-SOA formation should be described in chemical transport modelling.

Application of the model will enable comparison with concurrent field observations or basis for future measurement initiatives to monitoring stress-induced emissions as part of ecosystem status.

Specifically, the understanding of the atmospheric oxidation of selected SIE BVOCs with the atmospheric oxidants (O3, OH and NO3) and related product/SOA formation will be addressed under high (urban influenced) and low (unperturbed rural) NOx conditions. The selection of SIE BVOCs is based on recent findings on real plant SIE emissions regarding composition and strength as function of selected stressors (biotic and droughts). The project team has a high profile within atmospheric
chemistry and biosphere-atmosphere interactions and has the necessary advanced tools to address this topic efficiently with high quality.

The results will be implemented and tested using the EMEP model that feeds into integrated assessment models such as the GAINS model for co-benefit policy strategies on mitigation of air pollution and greenhouse gas emission.

Participants

David Simpson (contact)

Adjungerad professor vid Chalmers, Space, Earth and Environment, Microwave and Optical Remote Sensing, Global Environmental Measurements and Modelling

David Simpson

Adjungerad professor vid Chalmers, Space, Earth and Environment, Microwave and Optical Remote Sensing, Global Environmental Measurements and Modelling

Collaborations

Forschungszentrum Jülich

Juelich, Germany

University of Gothenburg

Gothenburg, Sweden

Funding

Formas

Funding Chalmers participation during 2016–2018 with 1,161,000.00 SEK

Related Areas of Advance and Infrastructure

Sustainable development

Driving Forces

More information

Latest update

2018-08-24