气候变化领域集成服务门户(CCPortal): Declines and peaks in NO2 pollution during the multiple waves of the COVID-19 pandemic in the New York metropolitan area

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DOI	10.5194/acp-22-2399-2022
	Declines and peaks in NO2 pollution during the multiple waves of the COVID-19 pandemic in the New York metropolitan area
	Tzortziou, Maria; Kwong, Charlotte F.; Goldberg, Daniel; Schiferl, Luke; Commane, Roisin; Abuhassan, Nader; Szykman, James J.; Valin, Lukas C.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	2399
结束页码	2417
卷号	22 期号:4 页码:19
英文摘要	The COVID-19 pandemic created an extreme natural experiment in which sudden changes in human behavior and economic activity resulted in significant declines in nitrogen oxide (NOx) emissions, immediately after strict lockdowns were imposed. Here we examined the impact of multiple waves and response phases of the pandemic on nitrogen dioxide (NO2) dynamics and the role of meteorology in shaping relative contributions from different emission sectors to NO2 pollution in post-pandemic New York City. Long term (> 3.5 years), high frequency measurements from a network of ground-based Pandora spectrometers were combined with TROPOMI satellite retrievals, meteorological data, mobility trends, and atmospheric transport model simulations to quantify changes in NO2 across the New York metropolitan area. The stringent lockdown measures after the first pandemic wave resulted in a decline in top-down NOx emissions by approx. 30 % on top of long-term trends, in agreement with sector-specific changes in NOx emissions. Ground-based measurements showed a sudden drop in total column NO2 in spring 2020, by up to 36 % in Manhattan and 19 %-29 % in Queens, New Jersey (NJ), and Connecticut (CT), and a clear weakening (by 16 %) of the typical weekly NO2 cycle. Extending our analysis to more than a year after the initial lockdown captured a gradual recovery in NO2 across the NY/NJ/CT tri-state area in summer and fall 2020, as social restrictions eased, followed by a second decline in NO2 coincident with the second wave of the pandemic and resurgence of lockdown measures in winter 2021. Meteorology was not found to have a strong NO2 biassing effect in New York City after the first pandemic wave. Winds, however, were favorable for low NO2 conditions in Manhattan during the second wave of the pandemic, resulting in larger column NO2 declines than expected based on changes in transportation emissions alone. Meteorology played a key role in shaping the relative contributions from different emission sectors to NO2 pollution in the city, with low-speed (< 5 m s(-1)) SW-SE winds enhancing contributions from the high-emitting power-generation sector in NJ and Queens and driving particularly high NO2 pollution episodes in Manhattan, even during - and despite - the stringent early lockdowns. These results have important implications for air quality management in New York City, and highlight the value of high resolution NO2 measurements in assessing the effects of rapid meteorological changes on air quality conditions and the effectiveness of sector-specific NOx emission control strategies.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000760856500001
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/273936
作者单位	City University of New York (CUNY) System; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; George Washington University; Columbia University; Columbia University; University System of Maryland; University of Maryland Baltimore; University of Maryland Baltimore County; National Aeronautics & Space Administration (NASA); NASA Langley Research Center; United States Environmental Protection Agency
推荐引用方式 GB/T 7714	Tzortziou, Maria,Kwong, Charlotte F.,Goldberg, Daniel,et al. Declines and peaks in NO2 pollution during the multiple waves of the COVID-19 pandemic in the New York metropolitan area[J],2022,22(4):19.
APA	Tzortziou, Maria.,Kwong, Charlotte F..,Goldberg, Daniel.,Schiferl, Luke.,Commane, Roisin.,...&Valin, Lukas C..(2022).Declines and peaks in NO2 pollution during the multiple waves of the COVID-19 pandemic in the New York metropolitan area.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(4),19.
MLA	Tzortziou, Maria,et al."Declines and peaks in NO2 pollution during the multiple waves of the COVID-19 pandemic in the New York metropolitan area".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.4(2022):19.