期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 54, 期 24, 页码 15689-15697出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.0c05839
关键词
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资金
- International Council on Clean Transportation (ICCT)
- NERC [NE/S012044/1]
In this study, we use comprehensive vehicle emission remote sensing measurements of over 230,000 passenger cars to estimate total UK ammonia (NH3) emissions. Estimates are made using top-down and bottom-up methods that demonstrate good agreement to within 1.1% for total fuel consumed or CO2 emitted. A central component of this study is the comprehensive nature of the bottom-up emission estimates that combine highly detailed remote sensing emission data with over 4000 km of 1 Hz real driving data. Total annual UK NH3 emissions from gasoline passenger cars are estimated to be 7.8 +/- 0.3 kt from the bottom-up estimate compared with 3.0 +/- 1.7 kt reported by the UK national inventory. An important conclusion from the analysis is that both methodologies confirm that gasoline passenger car NH3 emissions are underestimated by a factor of about 2.6 compared with the 2018 UK National Atmospheric Emissions Inventory. Furthermore, we find that inventory estimates of urban emissions of NH3 for passenger cars are underestimated by a factor of 17.
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