Table 4

Sensitivity of modeled P(O3) to reductions in input NO, shows as mean relative increases compared to base simulations (i.e. unchanged DC-8 observations). Data are filtered to compare sensitivity of P(O3) to NOx over the entire SMA, Seoul, and non-Seoul SMA.

Mean Relative Change in Modeled P(O3)

Model SimulationAll SMA <2 kmSeoul <2 kmnon-Seoul SMA <2 km

NO –25% +5% +7% +4%
NO –50% +11% +22% +6%
NO –75% +10% +43% –4%
NO + VOC –10% –1% –2% –2%
NO + VOC –25% –3% –6% –6%
Mean Relative Change in Modeled P(O3)

Model SimulationAll SMA <2 kmSeoul <2 kmnon-Seoul SMA <2 km

NO –25% +5% +7% +4%
NO –50% +11% +22% +6%
NO –75% +10% +43% –4%
NO + VOC –10% –1% –2% –2%
NO + VOC –25% –3% –6% –6%
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