Table 1.
Continental scale nitrogen budgets for 2002 annual and June 2006 simulations for unidirectional and bi-directional CMAQ versions.
| species | deposition (106 kg N) | relative portion |
deposition (106 kg N) | relative portion |
||||
|---|---|---|---|---|---|---|---|---|
| unidirectional CMAQ annual 2002 deposition, continental United States | unidirectional CMAQ June 2006 deposition, continental United States | |||||||
| Ox-N total | 3927 | 100.0% | 63.01% | 360 | 100.0% | 56.19% | ||
| wet Ox-N | 1667 | 42.44% | 26.74% | 165 | 45.94% | 25.81% | ||
| dry Ox-N | 2261 | 100.0% | 57.56% | 36.27% | 195 | 100.0% | 54.06% | 30.38% |
| NOx | 216 | 9.57% | 3.47% | 19 | 9.67% | 2.94% | ||
| HNO3 | 1440 | 63.69% | 23.10% | 152 | 78.08% | 23.72% | ||
| NO3 | 125 | 5.54% | 2.01% | 8 | 4.14% | 1.26% | ||
| PANs | 218 | 9.66% | 3.50% | 8 | 3.95% | 1.20% | ||
| organic-N | 176 | 7.79% | 2.82% | 5 | 2.39% | 0.73% | ||
| other | 85 | 3.76% | 1.36% | 3 | 1.76% | 0.54% | ||
| Red-N total | 2306 | 100.0% | 36.99% | 281 | 100.0% | 43.81% | ||
| wet Red-N | 1195 | 51.83% | 19.17% | 148 | 52.67% | 23.07% | ||
| dry Red-N | 1110 | 100.0% | 48.17% | 17.82% | 133 | 100.0% | 47.33% | 20.73% |
| NH3 | 1001 | 90.17% | 16.07% | 124 | 93.34% | 19.35% | ||
| NH4+ | 109 | 9.83% | 1.75% | 9 | 6.66% | 1.38% | ||
| total | 6233 | 100.0% | 641 | 100.0% | ||||
| bi-directional CMAQ annual 2002 deposition, continental United States | bi-directional CMAQ June 2006 deposition, continental United States | |||||||
| Ox-N total | 3917 | 100.0% | 66.09% | 360 | 100.0% | 59.70% | ||
| wet Ox-N | 1581 | 40.36% | 26.67% | 165 | 45.79% | 27.34% | ||
| dry Ox-N | 2336 | 100.0% | 59.64% | 39.42% | 195 | 100.0% | 54.21% | 32.36% |
| NOx | 216 | 9.25% | 3.65% | 22 | 11.49% | 3.72% | ||
| HNO3 | 1513 | 64.78% | 25.53% | 149 | 76.08% | 24.62% | ||
| NO3 | 119 | 5.09% | 2.01% | 8 | 4.06% | 1.32% | ||
| PANs | 223 | 9.56% | 3.77% | 7 | 3.77% | 1.22% | ||
| organic-N | 178 | 7.63% | 3.01% | 5 | 2.33% | 0.75% | ||
| other | 86 | 3.69% | 1.45% | 4 | 2.26% | 0.73% | ||
| Red-N total | 2010 | 100.0% | 33.91% | 243 | 100.0% | 40.30% | ||
| wet Red-N | 1358 | 67.55% | 22.91% | 159 | 65.43% | 26.37% | ||
| dry Red-N | 652 | 100.0% | 32.45% | 11.00% | 84 | 100.0% | 34.57% | 13.93% |
| NH3 | 548 | 83.96% | 9.24% | 75 | 89.18% | 12.42% | ||
| NH4+ | 105 | 16.04% | 1.77% | 9 | 10.82% | 1.51% | ||
| total | 5927 | 100.0% | 604 | 100.0% | ||||