Documentation of the Evaluation of CALPUFF and Other Long ...

Table 3‐15. CALPUFF model performance statistics using the Irwin plume fitting evaluation
approach for the GP80 600 km arc of receptors for the EPA 1998 CALPUFF V4.0 modeling and
the current study CALPUFF V5.8 sensitivity tests.
CALPUFF
Sensitivity
Cmax Omax Sigma‐y Centerline CWIC
Test
(ppt) MNB (ppt) MNB (m) MNB (deg) Diff (ppt‐m) MNB
Observed 0.3152 0.3068 16,533 369.06 13,060
1998EPA_PG 0.1100 ‐65% 0.1300 ‐58% 64,900 293% 25.00 15.94 17,000 30%
1998EPA_CAL 0.1400 ‐56% 0.1300 ‐58% 42,600 158% 24.00 14.94 15,000 15%
CALPUFF/CALMET
BASEA_AER 0.1024 ‐68% 0.1000 ‐67% 27,780 68% 29.43 20.37 7,133 ‐45%
BASEA_CAL 0.0875 ‐72% 0.0817 ‐73% 36,870 123% 27.55 18.49 8,084 ‐38%
BASEA_PG 0.0763 ‐76% 0.0780 ‐75% 58,780 256% 23.74 14.68 11,240 ‐14%
EXP1A_AER 0.1004 ‐68% 0.0985 ‐68% 25,490 54% 27.39 18.33 6,414 ‐51%
EXP1A_CAL 0.1020 ‐68% 0.0997 ‐68% 25,500 54% 27.30 18.24 6,520 ‐50%
EXP1A_PG 0.0991 ‐69% 0.0969 ‐68% 25,280 53% 28.12 19.06 6,277 ‐52%
EXP1B_AER 0.1141 ‐64% 0.1106 ‐64% 34,040 106% 18.91 9.85 9,739 ‐25%
EXP1B_CAL 0.1168 ‐63% 0.1136 ‐63% 33,600 103% 18.77 9.71 9,840 ‐25%
EXP1B_PG 0.1117 ‐65% 0.1085 ‐65% 29,660 79% 21.76 12.70 8,304 ‐36%
EXP1C_AER 0.1388 ‐56% 0.1365 ‐56% 34,660 110% 19.01 9.95 12,060 ‐8%
EXP1C_CAL 0.1412 ‐55% 0.1387 ‐55% 35,070 112% 18.54 9.48 12,410 ‐5%
EXP1C_PG 0.1313 ‐58% 0.1283 ‐58% 32,400 96% 20.06 11.00 10,660 ‐18%
EXP2A_AER 0.1068 ‐66% 0.1046 ‐66% 24,520 48% 27.72 18.66 6,565 ‐50%
EXP2A_CAL 0.1073 ‐66% 0.1052 ‐66% 24,600 49% 27.57 18.51 6,614 ‐49%
EXP2A_PG 0.1204 ‐62% 0.1180 ‐62% 39,900 141% 24.41 15.35 12,040 ‐8%
EXP2B_AER 0.1474 ‐53% 0.1463 ‐52% 25,520 54% 19.37 10.31 9,426 ‐28%
EXP2B_CAL 0.1539 ‐51% 0.1516 ‐51% 24,230 47% 19.12 10.06 9,346 ‐28%
EXP2B_PG 0.1007 ‐68% 0.1149 ‐63% 42,590 158% 21.27 12.21 10,750 ‐18%
EXP2C_AER 0.1603 ‐49% 0.1648 ‐46% 35,810 117% 21.55 12.49 14,390 10%
EXP2C_CAL 0.1660 ‐47% 0.1712 ‐44% 35,330 114% 21.47 12.41 14,700 13%
EXP2C_PG 0.1842 ‐42% 0.1736 ‐43% 40,850 147% 19.35 10.29 18,860 44%
EXP3A_AER 0.1075 ‐66% 0.1048 ‐66% 24,370 47% 26.82 17.76 6,568 ‐50%
EXP3A_CAL 0.1079 ‐66% 0.1057 ‐66% 24,510 48% 26.70 17.64 6,630 ‐49%
EXP3A_PG 0.1041 ‐67% 0.1015 ‐67% 24,180 46% 27.82 18.76 6,312 ‐52%
EXP3B_AER 0.1332 ‐58% 0.1305 ‐57% 24,030 45% 18.54 9.48 8,025 ‐39%
EXP3B_CAL 0.1357 ‐57% 0.1327 ‐57% 24,050 45% 18.41 9.35 8,179 ‐37%
EXP3B_PG 0.0733 ‐77% 0.0655 ‐79% 38,960 136% 23.12 14.06 7,160 ‐45%
EXP3C_AER 0.1470 ‐53% 0.1436 ‐53% 33,260 101% 18.33 9.27 12,250 ‐6%
EXP3C_CAL 0.1485 ‐53% 0.1454 ‐53% 33,210 101% 18.38 9.32 12,360 ‐5%
EXP3C_PG 0.1380 ‐56% 0.1360 ‐56% 31,260 89% 20.80 11.74 10,820 ‐17%
CALPUFF/MMIF
MMIF12KM_CAL 0.1029 ‐67% 0.1012 ‐67% 34,290 107% 26.43 17.37 8,842 ‐32%
MMIF12KM_PG 0.0956 ‐70% 0.0887 ‐71% 39,120 137% 24.89 15.83 9,371 ‐28%
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