Table 1. E-AIM Modeling Settings.

process modeled	case	composition, molar ratios Na+(Cl–)/NH4+(SO42–)	conc. [mol m–3]	aw	gas phase allowed	crystals allowed	aq. density
crystals	1	1(1):1(0.5)	NAc	0.50	N	Ya
HGFs and deliquescence	2a	1(1):1(0.5)	NAc	0.30–0.95	N	Ya	vol. add.b
	2b	50(1):1(25)	NAc	0.30–0.95	N	Ya	vol. add.b
	2c	50(1):1(25)	NAc	0.30–0.95	N	Ya	E-AIM
gas/particle partitioning	3a	1(1):1(0.5)	10–7, 10–6, 10–5	0.10–0.95	Y	N
	3b	1(1):1(0.5)	10–8–10–4	0.30, 0.50	Y	N

^aCrystals allowed: NaCl, Na₂SO₄, (NH₄)₂SO₄, and NH₄Cl.

^bVolume additivity was assumed for the solute/water in the droplets.

^cInput concentrations, in this case, do not impact the model output and are therefore not provided.