气候变化领域集成服务门户(CCPortal): Quantifying burning efficiency in megacities using the NO2ĝ•CO ratio from the Tropospheric Monitoring Instrument (TROPOMI)

CCPortal

DOI	10.5194/acp-20-10295-2020
	Quantifying burning efficiency in megacities using the NO2ĝ•CO ratio from the Tropospheric Monitoring Instrument (TROPOMI)
	Lama S.; Houweling S.; Folkert Boersma K.; Eskes H.; Aben I.; A. C. Denier Van Der Gon H.; C. Krol M.; Dolman H.; Borsdorff T.; Lorente A.
发表日期	2020
ISSN	1680-7316
起始页码	10295
结束页码	10310
卷号	20 期号:17
英文摘要	This study investigates the use of co-located nitrogen dioxide (NO2) and carbon monoxide (CO) retrievals from the TROPOMI satellite to improve the quantification of burning efficiency and emission factors (EFs) over the megacities of Tehran, Mexico City, Cairo, Riyadh, Lahore, and Los Angeles. Efficient combustion is characterized by high NOx (NOCNO2) and low CO emissions, making the NO2=CO ratio a useful proxy for combustion efficiency (CE). The local enhancement of CO and NO2 above megacities is well captured by TROPOMI at short averaging times compared with previous satellite missions. In this study, the upwind background and plume rotation methods are used to investigate the accuracy of satellitederived 1NO2=1CO ratios. The column enhancement ratios derived using these two methods vary by 5% to 20% across the selected megacities. TROPOMI-derived column enhancement ratios are compared with emission ratios from the EDGAR v4.3.2 (Emission Database for Global Atmospheric Research v4.3.2) and the MACCity (Monitoring Atmospheric Chemistry and Climate and CityZen) 2018 emission inventories. TROPOMI correlates strongly (r D 0:85 and 0.7) with EDGAR and MACCity, showing the highest emission ratio for Riyadh and lowest emission ratio for Lahore. However, inventory-derived emission ratios are 60% to 85% higher than TROPOMI column enhancement ratios across the six megacities. The short lifetime of NO2 and the different vertical sensitivity of TROPOMI NO2 and CO explain most of this difference. We present a method to translate TROPOMI-retrieved column enhancement ratios into corresponding emission ratios, thereby accounting for these influences. Except for Los Angeles and Lahore, TROPOMI-derived emission ratios are close (within 10% to 25 %) to MACCity values. For EDGAR, however, emission ratios are 65% higher for Cairo and 35% higher for Riyadh. For Los Angeles, EDGAR and MACCity are a factor of 2 and 3 higher than TROPOMI respectively. The air quality monitoring networks in Los Angeles and Mexico City are used to validate the use of TROPOMI. For Mexico City and Los Angeles, these measurements are consistent with TROPOMI-derived emission ratios, demonstrating the potential of TROPOMI with respect to monitoring burning efficiency. © 2020 American Institute of Physics Inc.. All rights reserved.
语种	英语
scopus关键词	air quality; atmospheric chemistry; burning; carbon monoxide; megacity; nitrogen dioxide; troposphere; Cairo [Cairo (GVR)]; Cairo [Egypt]; California; Egypt; Federal District [Mexico]; Iran; Lahore; Los Angeles [California]; Mexico City; Mexico [North America]; Pakistan; Punjab [Pakistan]; Riyadh [Riyadh (PRV)]; Riyadh [Saudi Arabia]; Saudi Arabia; Tehran [Iran]; 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/247547
作者单位	Vrije Universiteit, Department of Earth Sciences, Amsterdam, Netherlands; Sron Netherlands Institute for Space Research, Utrecht, Netherlands; Wageningen University, Meteorology and Air Quality Group, Wageningen, Netherlands; Royal Netherlands Meteorological Institute, RandD Satellite Observations, de Bilt, Netherlands; Vrije Universiteit, Department of Physics and Astronomy, Amsterdam, Netherlands; Tno, Department of Climate, Air and Sustainability, Princetonlaan, Netherlands; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Lama S.,Houweling S.,Folkert Boersma K.,等. Quantifying burning efficiency in megacities using the NO2ĝ•CO ratio from the Tropospheric Monitoring Instrument (TROPOMI)[J],2020,20(17).
APA	Lama S..,Houweling S..,Folkert Boersma K..,Eskes H..,Aben I..,...&Lorente A..(2020).Quantifying burning efficiency in megacities using the NO2ĝ•CO ratio from the Tropospheric Monitoring Instrument (TROPOMI).ATMOSPHERIC CHEMISTRY AND PHYSICS,20(17).
MLA	Lama S.,et al."Quantifying burning efficiency in megacities using the NO2ĝ•CO ratio from the Tropospheric Monitoring Instrument (TROPOMI)".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.17(2020).