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. Author manuscript; available in PMC: 2020 Feb 7.
Published in final edited form as: Atmos Chem Phys. 2017;17:11107–11133. doi: 10.5194/acp-17-11107-2017

Table 1.

Properties of semivolatile POA species in CMAQv5.2.

Species name
(Particle/vapor)
Molecular weight
g mol−1
C*, 1
μg m−3
NC O : C Hvap
kJ mol−1
POA emission
Fraction2

ALVPO1/VLVPO13 218 0.1 13.0 0.185 89 0.09
ASVPO1/VSVPO14 230 1 14.5 0.123 85 0.09
ASVPO2/VSVPO2 241 10 16.0 0.073 81 0.14
ASVPO3/VSVPO3 253 100 17.5 0.032 77 0.18
AIVPO1/VIVPO15 266 1000 19.0 0.00 73 0.5
ALVOO1/VLVOO16 136 0.01 5.0 0.886 93 n/a
ALVOO2/VLVOO2 136 0.1 5.5 0.711 89 n/a
ASVOO1/VSVOO1 135 1 6.0 0.567 85 n/a
ASVOO2/VSVOO2 135 10 6.5 0.447 81 n/a
ASVOO3/VSVOO3 134 100 7.0 0.345 77 n/a
1

C* values are defined at reference temperature 298 K.

3

A = aerosol; V = vapor; LV = low volatility; PO = primary organic;

4

SV = semivolatile;

5

IV = intermediate volatility;

6

OO = oxidized organic.

n/a: not applicable.