Table 3.
Regional change in average of top 10 paired-in-time concentrations from 2000 to 2010 (ppb). The values in parenthesis denote changes calculated using the unpaired top10 concentrations. The ratio is marked with bold font for the best correspondence between model and observed changes. Sites correspond to Fig.1a.
| Region | # of Sites | CMAQ 2000 | CMAQ 2010 | Observed 2000 | Observed 2010 | CMAQ Change | Observed Change | Ratio CMAQ/Obs. Change |
|---|---|---|---|---|---|---|---|---|
| W | 56 | 67.8 (82.3) | 70.8 (79.5) | 75.8 | 71.1 | 2.9(−2.8) | −4.7 | −0.6 (0.6) |
| SW | 10 | 67.3 (77.6) | 59.9 (68.7) | 75.5 | 70.0 | −7.4 (−8.9) | −5.5 | 1.4 (1.6) |
| SC | 21 | 82.1 (89.5) | 67.5 (73.7) | 88.8 | 71.3 | −14.6 (−15.8) | −17.5 | 0.8 (0.9) |
| SE | 33 | 78.6 (89.7) | 68.6 (77.2) | 84.3 | 68.8 | −10.0 (−12.4) | −15.5 | 0.6 (0.8) |
| MW | 81 | 73.4 (82.3) | 68.5 (76.8) | 76.3 | 68.6 | −4.9 (−5.4) | −7.6 | 0.6 (0.7) |
| NE | 58 | 76.0 (84.3) | 75.6 (81.0) | 81.6 | 75.0 | −0.4 (−3.3) | −6.5 | 0.1 (0.5) |