simpleGAMMA v1.0 – a reduced model of secondary organic aerosol formation in the aqueous aerosol phase (aaSOA)
作者： J. L. Woo , V. F. McNeill
关键词: Atmospheric chemistry 、 Phase (matter) 、 Reduced model 、 Environmental chemistry 、 Organosulfate 、 Isoprene 、 Aqueous solution 、 Glyoxal 、 Aerosol 、 Chemistry
摘要: Abstract. There is increasing evidence that the uptake and aqueous processing of water-soluble volatile organic compounds (VOCs) by wet aerosols or cloud droplets an important source secondary aerosol (SOA). We recently developed GAMMA (Gas–Aerosol Model for Mechanism Analysis), a zero-dimensional kinetic model couples gas-phase detailed aqueous-phase atmospheric chemistry speciated prediction SOA organosulfate formation in water aerosols. Results from simulations (aaSOA) (McNeill et al., 2012) indicate it dominated two pathways: isoprene epoxydiol (IEPOX) followed ring-opening (under low-NOx conditions) glyoxal uptake. This suggested possible to majority aaSOA mass using highly simplified reaction scheme. have therefore reduced version GAMMA, simpleGAMMA. Close agreement predicted observed between simpleGAMMA under all conditions tested (between pH 1–4 RH 40–80 %) after 12 h simulation. computationally efficient suitable coupling with larger-scale models analyzing ambient measurement data.
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