Enhanced capabilities of TROPOMI NO2: Estimating NOx from North American cities and power plants
Goldberg, DL; Lu, Z; Streets, DG; de Foy, B; Griffin, D; McLinden, CA; Lamsal, LN; Krotkov, NA; Eskes, H
HERO ID
5949318
Reference Type
Journal Article
Year
2019
Language
English
PMID
| HERO ID | 5949318 |
|---|---|
| In Press | No |
| Year | 2019 |
| Title | Enhanced capabilities of TROPOMI NO2: Estimating NOx from North American cities and power plants |
| Authors | Goldberg, DL; Lu, Z; Streets, DG; de Foy, B; Griffin, D; McLinden, CA; Lamsal, LN; Krotkov, NA; Eskes, H |
| Journal | Environmental Science & Technology |
| Volume | 53 |
| Issue | 21 |
| Page Numbers | 12594-12601 |
| Abstract | The TROPOspheric Monitoring Instrument (TROPOMI) is used to derive top-down NOX emissions for two large power plants and three megacities in North America. We first re-process the vertical column NO2 with an improved air mass factor to correct for a known systematic low bias in the operational retrieval near urban centers. For the two power plants, top-down NOX emissions agree to within 10% of the emissions reported by the power plants. We then derive top-down NOX emissions rates for New York City, Chicago, and Toronto, and compare them to projected bottom-up emissions inventories. In this analysis of 2018 NOX emissions, we find a +22% overestimate for New York City, a −21% underestimate in Toronto, and good agreement in Chicago in the projected bottom-up inventories when compared to the top-down emissions. Top-down NOX emissions also capture intraseasonal variability, such as the weekday versus weekend effect (emissions are +45% larger on weekdays versus weekends in Chicago). Finally, we demonstrate the enhanced capabilities of TROPOMI, which allow us to derive a NOX emissions rate for Chicago using a single overpass on July 7, 2018. The large signal-to-noise ratio of TROPOMI is well-suited for estimating NOX emissions from relatively small sources and for sub-seasonal timeframes. |
| Doi | 10.1021/acs.est.9b04488 |
| Pmid | 31601103 |
| Wosid | WOS:000495467500048 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |