Fig. 4: Relative contributions of non-aqueous pathway to 2-MT.
From: New formation and fate of Isoprene SOA markers revealed by field data-constrained modeling

a, d Fraction of predicted 2-MT from the non-aqueous pathway (fnon-aq). b, e Total concentrations of 2-MT (ng m-3). c, f Aerosol pH in the US and in China for the OH×0.005 case (Base Case in Supplementary Table 4).