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Comparison of measurements by particle-phase instruments (a) FIGAERO I− CIMS mass vs SMPS mass (assumed density = 1.4 g cm−3), shaded region is uncertainty. (b) Time-series of elemental ratios FIGAERO I− CIMS to TD-AMS. (c) Histograms of volatility distributions, directly measured by FIGAERO I- CIMS (black solid line) and TD-AMS (gray dashed line), and estimated from FIGAERO I− CIMS ions using Eq. 3 as solid green line.
