气候变化领域集成服务门户(CCPortal): Peculiar COVID-19 effects in the Greater Tokyo Area revealed by spatiotemporal variabilities of tropospheric gases and light-absorbing aerosols

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DOI	10.5194/acp-22-12705-2022
	Peculiar COVID-19 effects in the Greater Tokyo Area revealed by spatiotemporal variabilities of tropospheric gases and light-absorbing aerosols
	Damiani, Alessandro; Irie, Hitoshi; Belikov, Dmitry A.; Kaizuka, Shuei; Hoque, Hossain Mohammed Syedul; Cordero, Raul R.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	12705
结束页码	12726
卷号	22 期号:18 页码:22
英文摘要	This study investigated the spatiotemporal variabilities in nitrogen dioxide (NO2), formaldehyde (HCHO), ozone (O-3), and light-absorbing aerosols within the Greater Tokyo Area, Japan, which is the most populous metropolitan area in the world. The analysis is based on total tropospheric column, partial tropospheric column (within the boundary layer), and in situ observations retrieved from multiple platforms as well as additional information obtained from reanalysis and box model simulations. This study mainly covers the 2013-2020 period, focusing on 2020 when air quality was influenced by the coronavirus 2019 (COVID-19) pandemic. Although total and partial tropospheric NO2 columns were reduced by an average of about 10 % in 2020, reductions exceeding 40 % occurred in some areas during the pandemic state of emergency. Light-absorbing aerosol levels within the boundary layer were also reduced for most of 2020, while smaller fluctuations in HCHO and O-3 were observed. The significantly enhanced degree of weekly cycling of NO2, HCHO, and light-absorbing aerosol found in urban areas during 2020 suggests that, in contrast to other countries, mobility in Japan also dropped on weekends. We conclude that, despite the lack of strict mobility restrictions in Japan, widespread adherence to recommendations designed to limit the COVID-19 spread resulted in unique air quality improvements.
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:000861478000001
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/273036
作者单位	Chiba University; Nagoya University; Universidad de Santiago de Chile
推荐引用方式 GB/T 7714	Damiani, Alessandro,Irie, Hitoshi,Belikov, Dmitry A.,et al. Peculiar COVID-19 effects in the Greater Tokyo Area revealed by spatiotemporal variabilities of tropospheric gases and light-absorbing aerosols[J],2022,22(18):22.
APA	Damiani, Alessandro,Irie, Hitoshi,Belikov, Dmitry A.,Kaizuka, Shuei,Hoque, Hossain Mohammed Syedul,&Cordero, Raul R..(2022).Peculiar COVID-19 effects in the Greater Tokyo Area revealed by spatiotemporal variabilities of tropospheric gases and light-absorbing aerosols.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(18),22.
MLA	Damiani, Alessandro,et al."Peculiar COVID-19 effects in the Greater Tokyo Area revealed by spatiotemporal variabilities of tropospheric gases and light-absorbing aerosols".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.18(2022):22.