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.