Winter Ozone AQ Modeling Results
The WAQS modeling team conducted a series of CAMx sensitivity simulations with the objectiveobjectives of understanding the deficiencies and improving the ability of the model toin reproducereproducing high wintertime ozone concentrations related to localized meteorological conditions and oil and gas emissions sources. The WRF Winter Modeling Workplan and WRF Winter Modeling Evaluation Report describe our efforts to improve the simulation of the meteorology associated with high wintertime ozone. The WRF modeling conducted by the WAQS team resulted in a wintertime WRF configuration that results in a better model of the inversion events that accompany high ozone concentrations.
Emissions Adjustments
O&G Basin Emission Adjustment Factors
| Basin | NOx | VOC | CH4 | Notes | Reference |
|---|---|---|---|---|---|
| Denver-Julesberg | >2.0 | Petron et al., 2012 | |||
| Piceance | |||||
| North San Juan | |||||
| South San Juan | |||||
| Paradox | |||||
| Uintah | 0.25 | 1.6 | 4.4 | Uintah and Duchesne Counties | Karion et al., 2013; Ahmadov et al., 2015 |
| Southwest Wyoming | |||||
| Big Horn | |||||
| Wind River | |||||
| Powder River | |||||
| Great Plains | |||||
| Williston |
Upper Green River Basin CAMx Analysis
Monthly Average Concentrations
| Big Piney | VOC | CH4 | |||||
| Boulder | VOC | CH4 | Winter VOC | Winter CH4 | Winter NO2 | Hourly CH4 | Hourly NO2 |
| Gillette | VOC | CH4 | |||||
| Pavilion | VOC | CH4 | Winter VOC | Winter CH4 | Winter NO2 | ||
| Wamsutter | VOC | CH4 |
Timeseries Analysis of CAMx Base11a O3
Colorado
Utah
Uintah Basin Winter Ozone StudyThese sites only measured ozone and meteorology parameters
| Site | Lat, Long, Elev | 2011 Episode Dates | 1-hr O3 Concentrations | Time-Height |
|---|---|---|---|---|
| Altamount | 40.3603, -110.2858, 1949.8056 | Feb 14 | >85 ppb | WRF-Winter |
| Mar 2-3 | >85 ppb | WRF-Winter | ||
| Cedarview | 40.383524, -110.072563, 1692.2496 | Jan 7-8 | >80 ppb | |
| Jan 25-31 | >90 ppb | |||
| Feb 12-16 | >135 ppb | WRF-Winter | ||
| Feb 23-24 | >100 ppb | |||
| Mar 1-3 | >90 ppb | WRF-Winter | ||
| Dinosaur | 40.4371, -109.3047, 1462.7352 | Jan 6-9 | >80 ppb | |
| Feb 12-16 | >110 ppb | WRF-Winter | ||
| Duchesne | 40.1615, -110.4011, 1682.496 | Jan 29-30 | >90 ppb | |
| Feb 12-16 | >120 ppb | WRF-Winter | ||
| Horse Pool | 40.1437, -109.4672, 1569.4152 | Jan 6-8 | >100 ppb | |
| Jan 24-31 | >95 ppb | |||
| Feb 12-16 | >130 ppb | WRF-Winter | ||
| Feb 23-25 | >120 ppb | |||
| Mar 1-4 | >115 ppb | WRF-Winter | ||
| Jensen | 40.3671, -109.3522, 1450.848 | Feb 12-16 | >100 ppb | WRF-Winter |
| Feb 23-24 | >80 ppb | |||
| Mar 1-2 | >80 ppb | WRF-Winter | ||
| Lapoint | 40.404, -109.8157, 1673.9616 | Jan 6-8 | >90 ppb | |
| Jan 27-31 | >80 ppb | |||
| Feb 12-16 | >120 ppb | |||
| Feb 22-24 | >100 ppb | |||
| Mar 1-3 | >85 ppb | |||
| Ouray | 40.054768, -109.688001, 1463.9544 | Jan 6-9 | >100 ppb | |
| Jan 16-17 | >95 ppb | |||
| Jan 26-31 | >105 ppb | |||
| Feb 11-16 | >140 ppb | |||
| Feb 24-25 | >120 ppb | |||
| Mar 1-3 | >100 ppb | |||
| Pariette Draw | 40.03460278, -109.8300556, 1466.6976 | Feb 11-16 | >140 ppb | |
| Feb 22-25 | >120 ppb | |||
| Mar 1-3 | >110 ppb | |||
| Rabbit Mountain | 39.8687, -109.0973, 1878.7872 | Jan 16 | >85 ppb | |
| Feb 14-16 | >100 ppb | |||
| Red Wash | 40.1972, -109.3525, 1688.8968 | Jan 6-9 | >95 ppb | |
| Jan 26-31 | >95 ppb | |||
| Feb 12-15 | >135 ppb | |||
| Feb 23-24 | >105 ppb | |||
| Mar 1-3 | >100 ppb | |||
| Roosevelt | 40.30073056, -109.9784172, 1544.7264 | Jan 6-9 | >80 ppb | |
| Jan 27-31 | >100 ppb | |||
| Feb 12-16 | >120 ppb | WRF-Winter | ||
| Feb 3-4 | >100 ppb | |||
| Mar 1-3 | >80 ppb | |||
| Vernal | 40.443273, -109.560983, 1662.684 | Jan 8-9 | >85 ppb | |
| Feb 12-16 | >100 ppb | WRF-Winter | ||
| Feb 24 | >85 ppb | |||
| Mar 2 | >80 ppb |
| Site | Lat, Long, Elev | 2011 Episode Dates | 8-hr O3 Concentrations | Obs Y/N |
|---|---|---|---|---|
| Wyoming Range | 42.98, -110.35, 2475 | Feb 15 | >80 ppb | Y |
| Mar 10 | >80 ppb | |||
| Pinedale | 42.92, -109.79, 2388 | Mar 1-2 | >85 ppb | Y |
| Mar 5 | >80 ppb | |||
| Juel Springs | 42.37, -109.56, 2144 | Mar 2 | >90 ppb | Y |
| Mar 12 | >85 ppb | |||
| Mar 15 | >85 ppb | |||
| Daniel | 42.79, -110.05, 2173 | Mar 10 | >80 ppb | Y |
| Boulder | 42.71, -109.75, 2160 | Feb 14 | >85 ppb | Y |
| Mar 1-5 | >120 ppb | |||
| Mar 12 | >120 ppb | |||
| Mobile Trailer | 42.68, -109.8, 2143 | Feb 14 | >80 ppb | Y |
| Mar 3 | >80 ppb |
Monitoring Maps
