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(a) Comparison of predicted SOA formation per unit of mass mobile IVOC emissions of new parameterizations and model of Zhao et al. (2015, 2016) at OA = 5 μgm−3 (average [OH] = 3 × 106 cm−3). (b) Relative error in SOA formed between new and Zhao et al. (2015, 2016) parameterizations (solid line is the relative error at OA = 5 μgm−3; shaded area corresponds to OA from 1 to 50 μgm−3).
