Journal Article

FZJ-2015-06582

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Modelling the contribution of biogenic volatile organic compounds to new particle formation in the Jülich plant atmosphere chamber

Roldin, P. (Corresponding author) ; Liao, L. ; Mogensen, D. ; Dal Maso, M. ; Rusanen, A. ; Kerminen, V.-M. ; Mentel, T. F.FZJ* ; Wildt, J.FZJ* ; Kleist, E.FZJ* ; Kiendler-Scharr, A.FZJ* ; Tillmann, R.FZJ* ; Ehn, M. ; Kulmala, M. ; Boy, M.

2015
EGU Katlenburg-Lindau

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Please use a persistent id in citations: http://hdl.handle.net/2128/9419  doi:10.5194/acp-15-10777-2015

Abstract: We used the Aerosol Dynamics gas- and particle-phase chemistry model for laboratory CHAMber studies (ADCHAM) to simulate the contribution of BVOC plant emissions to the observed new particle formation during photooxidation experiments performed in the Jülich Plant-Atmosphere Chamber and to evaluate how well smog chamber experiments can mimic the atmospheric conditions during new particle formation events. ADCHAM couples the detailed gas-phase chemistry from Master Chemical Mechanism with a novel aerosol dynamics and particle phase chemistry module. Our model simulations reveal that the observed particle growth may have either been controlled by the formation rate of semi- and low-volatility organic compounds in the gas phase or by acid catalysed heterogeneous reactions between semi-volatility organic compounds in the particle surface layer (e.g. peroxyhemiacetal dimer formation). The contribution of extremely low-volatility organic gas-phase compounds to the particle formation and growth was suppressed because of their rapid and irreversible wall losses, which decreased their contribution to the nano-CN formation and growth compared to the atmospheric situation. The best agreement between the modelled and measured total particle number concentration (R2 > 0.95) was achieved if the nano-CN was formed by kinetic nucleation involving both sulphuric acid and organic compounds formed from OH oxidation of BVOCs.

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Contributing Institute(s):

1. Troposphäre (IEK-8)
2. Pflanzenwissenschaften (IBG-2)

Research Program(s):

1. 243 - Tropospheric trace substances and their transformation processes (POF3-243) (POF3-243)

Appears in the scientific report 2015

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Database coverage:
; ; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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