Table 1.

CMAQ-defined aerosol phase species (Pye et al., 2017; Murphy et al., 2017) used in the calculation of the predicted organic-phase parameter (overall SOA viscosity η_org) and their respective organic mass to organic carbon ratio (OM : OC) (Pye et al., 2017), atomic oxygen to carbon ratio (O : C), molar weight (Pye et al., 2017) and predicted individual glass transition temperature (T_g) and viscosity at standard temperature.

Species name	Description	Source	OM : OC ratio	O : C ratio	Molar weight (g mole−1)	Predicted Tg(K)	Predicted ηorg at T = 298 K and ALW = 0(Pa s)
AALK1	SV alkane VOC SOA	ANTH	1.56	0.315	225	256	7.54 × 109
AALK2	SV alkane VOC SOA	ANTH	1.42	0.203	205.1	233	5.34 × 107
ABNZ1	SV high-NOx SOA product from benzene	ANTH	2.68	1.211	161	289	1.67 × 1014
ABNZ2	SV high-NOx SOA product from benzene	ANTH	2.23	0.851	134	234	2.66 × 107
ABNZ3	LV low-NOx SOA product from benzene	ANTH	3.00	1.467	180	322	1.00 × 1012
AGLY	Glyoxal/methylglyoxal SOA	BIOG	2.13	0.771	66.4	160	1.71 × 103
AISO1	SV SOA product from isoprene	BIOG	2.20	0.827	132.0	230	1.20 × 107
AISO2	HV SOA product from isoprene	BIOG	2.23	0.851	133.0	233	2.26 × 107
AISO3	Acid-catalyzed isoprene SOA compounds (2-methyltetrols plus IEPOX organosulfate)	BIOG	2.80	1.307	168.2	301	1.00 × 1012
ALVOO1	LV oxidized combustion organic compounds	ANTH	2.27	0.883	136	238	6.59 × 107
ALVOO2	LV oxidized combustion organic compounds	ANTH	2.06	0.715	136	222	3.97 × 106
AOLGA	Oligomer products of anthropogenic SOA compounds	ANTH	2.50	1.067	206	303	1.00 × 1012
AOLGB	Oligomer products of biogenic SOA compounds	BIOG	2.10	0.747	248	300	1.00 × 1012
AORGC	Glyoxal and methylglyoxal SOA	BIOG	2.00	0.667	177	251	1.33 × 109
APAH1	SV high-NOx SOA product from PAHs	ANTH	1.63	0.371	195.6	239	1.58 × 108
APAH2	SV high-NOx SOA product from PAHs	ANTH	1.49	0.259	178.7	216	2.80 × 106
APAH3	LV low-NOx SOA product from PAHs	ANTH	1.77	0.483	212.2	260	1.97 × 1010
APCSO	Potential combustion SOA	ANTH	2.00	0.667	170	245	3.91 × 108
ASQT	SV SOA from sesquiterpenes	BIOG	1.52	0.283	135	179	1.87 × 104
ASVOO1	SV oxidized combustion organic products	ANTH	1.88	0.571	135	207	4.69 × 105
ASVOO2	SV oxidized combustion organic products	ANTH	1.73	0.451	135	195	1.10 × 105
ASVOO3	SV oxidized combustion organic compounds	ANTH	1.60	0.347	134	184	3.19 × 104
AIVPO1	Intermediate-volatility primary organic compounds	ANTH	1.17	0.003	266	260	3.22 × 1010
ALVPO1	LV primary organic compounds	ANTH	1.39	0.179	218	241	2.58 × 108
ASVPO1	SV primary organic compounds	ANTH	1.32	0.123	230	245	7.00 × 108
ASVPO2	SV primary organic compounds	ANTH	1.26	0.075	241	249	1.86 × 109
ASVPO3	SV primary organic compounds	ANTH	1.21	0.035	253	254	6.63 × 109
ATOL1	SV high-NOx toluene SOA	ANTH	2.26	0.875	163	259	8.17 × 109
ATOL2	SV high-NOx toluene SOA	ANTH	1.82	0.523	175	23	7.25 × 107
ATOL3	LV low-NOx toluene SOA	ANTH	2.70	1.227	194	309	1.00 × 1012
ATRP1	SV SOA product from monoterpenes	BIOG	1.84	0.539	177	239	1.30 × 108
ATRP2	HV SOA product from monoterpenes	BIOG	1.83	0.531	198	254	3.93 × 109
AXYL1	SV high-NOx SOA product from xylene	ANTH	2.42	1.003	174	278	3.16 × 1012
AXYL2	SV high-NOx SOA product from xylene	ANTH	1.93	0.611	185	252	1.85 × 109
AXYL3	LV low-NOx SOA product from xylene	ANTH	2.30	0.907	218	297	1.43 × 1016