%0 Journal Article
%A Roldin, P.
%A Liao, L.
%A Mogensen, D.
%A Dal Maso, Miikka
%A Rusanen, A.
%A Kerminen, V.-M.
%A Mentel, T. F.
%A Wildt, J.
%A Kleist, E.
%A Kiendler-Scharr, A.
%A Tillmann, R.
%A Ehn, M.
%A Kulmala, M.
%A Boy, M.
%T Modelling the contribution of biogenic volatile organic compounds to new particle formation in the Jülich plant atmosphere chamber
%J Atmospheric chemistry and physics
%V 15
%N 18
%@ 1680-7324
%C Katlenburg-Lindau
%I EGU
%M FZJ-2015-06582
%P 10777 - 10798
%D 2015
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000362457400028
%R 10.5194/acp-15-10777-2015
%U https://juser.fz-juelich.de/record/276104