气候变化领域集成服务门户(CCPortal): Impact of the COVID-19 pandemic related to lockdown measures on tropospheric NO2 columns over Île-de-France

CCPortal

DOI	10.5194/acp-21-18303-2021
	Impact of the COVID-19 pandemic related to lockdown measures on tropospheric NO2 columns over Île-de-France
	Pazmiño A.; Beekmann M.; Goutail F.; Ionov D.; Bazureau A.; Nunes-Pinharanda M.; Hauchecorne A.; Godin-Beekmann S.
发表日期	2021
ISSN	1680-7316
起始页码	18303
结束页码	18317
卷号	21 期号:24
英文摘要	The evolution of NO2, considered as a proxy for air pollution, was analyzed to evaluate the impact of the first lockdown (17 March-10 May 2020) over the Île-de-France region (Paris and surroundings). Tropospheric NO2 columns measured by two UV-Visible Système d'Analyse par Observation Zénithale (SAOZ) spectrometers were analyzed to compare the evolution of NO2 between urban and suburban sites during the lockdown. The urban site is the observation platform QualAir (48g50gNg/g2g21gE) at the Sorbonne University Pierre and Marie Curie Campus in the center of Paris. The suburban site is located at Guyancourt (48g46Ng/g2g03E), Versailles Saint-Quentin-en-Yvelines University, 24gkm southwest of Paris. Tropospheric NO2 columns above Paris and Guyancourt have shown similar values during the whole lockdown period from March to May 2020. A decade of data sets were filtered to consider air masses at both sites with similar meteorological conditions. The median NO2 columns and the surface measurements of Airparif (Air Quality Observatory in Île de France) during the lockdown period in 2020 were compared to the extrapolated values estimated from a linear trend analysis for the 2011-2019 period at each station. Negative NO2 trends of -1.5gPmolec.gcm-2gyr-1 (g1/4g-6.3g%gyr-1) are observed from the columns, and trends of -2.2gμggm-3gyr-1 (g1/4g-3.6g%gyr-1) are observed from the surface concentration. The negative anomaly in tropospheric columns in 2020 attributed to the lockdown (and related emission reductions) was found to be 56g% at Paris and 46g% at Guyancourt, respectively. A similar anomaly was found in the data of surface concentrations, amounting to 53g% and 28g% at the urban and suburban sites, accordingly. © 2021 Andrea Pazmiño et al.
语种	英语
scopus关键词	air mass; air quality; atmospheric pollution; concentration (composition); COVID-19; disease control; epidemic; nitrogen dioxide; pandemic; pollution monitoring; spectrometer; troposphere; France; Ile de France
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/246361
作者单位	LATMOS/IPSL, Uvsq, Université Paris-Saclay, Sorbonne Université, Cnrs, Guyancourt, France; LISA/IPSL, Umr Cnrs 7583, Université Paris Est Créteil, Université de Paris, Créteil, France; Department of Atmospheric Physics, University of Saint Petersburg, Saint Petersburg, Russian Federation
推荐引用方式 GB/T 7714	Pazmiño A.,Beekmann M.,Goutail F.,et al. Impact of the COVID-19 pandemic related to lockdown measures on tropospheric NO2 columns over Île-de-France[J],2021,21(24).
APA	Pazmiño A..,Beekmann M..,Goutail F..,Ionov D..,Bazureau A..,...&Godin-Beekmann S..(2021).Impact of the COVID-19 pandemic related to lockdown measures on tropospheric NO2 columns over Île-de-France.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(24).
MLA	Pazmiño A.,et al."Impact of the COVID-19 pandemic related to lockdown measures on tropospheric NO2 columns over Île-de-France".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.24(2021).