气候变化领域集成服务门户(CCPortal): A methodology to constrain carbon dioxide emissions from coal-fired power plants using satellite observations of co-emitted nitrogen dioxide

CCPortal

DOI	10.5194/acp-20-99-2020
	A methodology to constrain carbon dioxide emissions from coal-fired power plants using satellite observations of co-emitted nitrogen dioxide
	Liu F.; Duncan B.N.; Krotkov N.A.; Lamsal L.N.; Beirle S.; Griffin D.; McLinden C.A.; Goldberg D.L.; Lu Z.
发表日期	2020
ISSN	1680-7316
起始页码	99
结束页码	116
卷号	20 期号:1
英文摘要	We present a method to infer CO2 emissions from individual power plants based on satellite observations of co-emitted nitrogen dioxide (NO2), which could serve as complementary verification of bottom-up inventories or be used to supplement these inventories. We demonstrate its utility on eight large and isolated US power plants, where accurate stack emission estimates of both gases are available for comparison. In the first step of our methodology, we infer nitrogen oxides (NOx) emissions from US power plants using Ozone Monitoring Instrument (OMI) NO2 tropospheric vertical column densities (VCDs) averaged over the ozone season (May-September) and a "top-down" approach that we previously developed. Second, we determine the relationship between NOx and CO2 emissions based on the direct stack emissions measurements reported by continuous emissions monitoring system (CEMS) programs, accounting for coal quality, boiler firing technology, NOx emission control device type, and any change in operating conditions. Third, we estimate CO2 emissions for power plants using the OMI-estimated NOx emissions and the CEMS NOx/CO2 emission ratio. We find that the CO2 emissions estimated by our satellite-based method during 2005-2017 are in reasonable agreement with the US CEMS measurements, with a relative difference of 8% ±41% (mean ± standard deviation). The broader implication of our methodology is that it has the potential to provide an additional constraint on CO2 emissions from power plants in regions of the world without reliable emissions accounting. We explore the feasibility by comparing the derived NOx/CO2 emission ratios for the US with those from a bottom-up emission inventory for other countries and applying our methodology to a power plant in South Africa, where the satellite-based emission estimates show reasonable consistency with other independent estimates. Though our analysis is limited to a few power plants, we expect to be able to apply our method to more US (and world) power plants when multi-year data records become available from new OMI-like sensors with improved capabilities, such as the TROPOspheric Monitoring Instrument (TROPOMI), and upcoming geostationary satellites, such as the Tropospheric Emissions: Monitoring Pollution (TEMPO) instrument. © Author(s) 2020.
语种	英语
scopus关键词	atmospheric chemistry; carbon dioxide; carbon emission; coal-fired power plant; concentration (composition); nitrogen dioxide; ozone; satellite imagery; South Africa; United States
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141632
作者单位	Universities Space Research Association (USRA), Goddard Earth Sciences Technology and Research (GESTAR), Columbia, MD, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Max-Planck-Institut für Chemie, Mainz, Germany; Air Quality Research Division, Environment and Climate Change Canada, Toronto, ON, Canada; Energy Systems Division, Argonne National Laboratory, Lemont, IL, United States
推荐引用方式 GB/T 7714	Liu F.,Duncan B.N.,Krotkov N.A.,et al. A methodology to constrain carbon dioxide emissions from coal-fired power plants using satellite observations of co-emitted nitrogen dioxide[J],2020,20(1).
APA	Liu F..,Duncan B.N..,Krotkov N.A..,Lamsal L.N..,Beirle S..,...&Lu Z..(2020).A methodology to constrain carbon dioxide emissions from coal-fired power plants using satellite observations of co-emitted nitrogen dioxide.Atmospheric Chemistry and Physics,20(1).
MLA	Liu F.,et al."A methodology to constrain carbon dioxide emissions from coal-fired power plants using satellite observations of co-emitted nitrogen dioxide".Atmospheric Chemistry and Physics 20.1(2020).