气候变化领域集成服务门户(CCPortal): Comparison of ammonia air concentration before and during the spread of COVID-19 in Lombardy (Italy) using ground-based and satellite data

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DOI	10.1016/j.atmosenv.2021.118534
	Comparison of ammonia air concentration before and during the spread of COVID-19 in Lombardy (Italy) using ground-based and satellite data
	Lovarelli D.; Fugazza D.; Costantini M.; Conti C.; Diolaiuti G.; Guarino M.
发表日期	2021
ISSN	1352-2310
卷号	259
英文摘要	Several anthropogenic activities have undergone major changes following the spread of the COVID-19 pandemic, which in turn has had consequences on the environment. The effect on air pollution has been studied in detail in the literature, although some pollutants, such as ammonia (NH3), have received comparatively less attention to date. Focusing on the case of Lombardy in Northern Italy, this study aimed to evaluate changes in NH3 atmospheric concentration on a temporal scale (the years from 2013 to 2019 compared to 2020) and on a spatial scale (countryside, city, and mountain areas). For this purpose, ground-based (from public air quality control units scattered throughout the region) and satellite observations (from IASI sensors on board MetOp-A and MetOp-B) were collected and analyzed. For ground-based measurements, a marked spatial variability is observed between the different areas while, as regards the comparison between periods, statistically significant differences were observed only for the countryside areas (+31% in 2020 compared to previous years). The satellite data show similar patterns but do not present statistically significant differences neither between different areas, nor between the two periods. In general, there have been no reduction effects of atmospheric NH3 as a consequence of COVID-19. This calls into question the role of the agricultural sector, which is known to be the largest responsible for NH3 emissions. Even if the direct comparison between the two datasets shows little correlation, their contextual consideration allows making more robust considerations regarding air pollutants. © 2021
关键词	Ammonia COVID-19 Ground-based measurements IASI Lombardy Po valley
语种	英语
scopus关键词	Air quality; Quality control; Satellites; Air concentrations; COVID-19; Ground based measurement; Ground-based data; IASI; Lombardy; NH$-3$; PO Valley; Satellite data; Statistically significant difference; Ammonia; ammonia; air quality; ammonia; atmospheric pollution; comparative study; concentration (composition); COVID-19; disease spread; ground-based measurement; human activity; IASI; MetOp; satellite data; air; air pollutant; air quality control; Article; comparative study; coronavirus disease 2019; Italy; lockdown; pandemic; spring; Italy; Lombardy
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248360
作者单位	Department of Environmental Science and Policy, Università degli Studi di Milano, via G. Celoria, 2, Milano, 20133, Italy
推荐引用方式 GB/T 7714	Lovarelli D.,Fugazza D.,Costantini M.,et al. Comparison of ammonia air concentration before and during the spread of COVID-19 in Lombardy (Italy) using ground-based and satellite data[J],2021,259.
APA	Lovarelli D.,Fugazza D.,Costantini M.,Conti C.,Diolaiuti G.,&Guarino M..(2021).Comparison of ammonia air concentration before and during the spread of COVID-19 in Lombardy (Italy) using ground-based and satellite data.ATMOSPHERIC ENVIRONMENT,259.
MLA	Lovarelli D.,et al."Comparison of ammonia air concentration before and during the spread of COVID-19 in Lombardy (Italy) using ground-based and satellite data".ATMOSPHERIC ENVIRONMENT 259(2021).