TY  - JOUR
AU  - Roldin, P.
AU  - Liao, L.
AU  - Mogensen, D.
AU  - Dal Maso, Miikka
AU  - Rusanen, A.
AU  - Kerminen, V.-M.
AU  - Mentel, T. F.
AU  - Wildt, J.
AU  - Kleist, E.
AU  - Kiendler-Scharr, A.
AU  - Tillmann, R.
AU  - Ehn, M.
AU  - Kulmala, M.
AU  - Boy, M.
TI  - Modelling the contribution of biogenic volatile organic compounds to new particle formation in the Jülich plant atmosphere chamber
JO  - Atmospheric chemistry and physics
VL  - 15
IS  - 18
SN  - 1680-7324
CY  - Katlenburg-Lindau
PB  - EGU
M1  - FZJ-2015-06582
SP  - 10777 - 10798
PY  - 2015
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000362457400028
DO  - DOI:10.5194/acp-15-10777-2015
UR  - https://juser.fz-juelich.de/record/276104
ER  -