Climate Change Data Portal
DOI | 10.1029/2020GL090080 |
NOx Emission Changes Over China During the COVID-19 Epidemic Inferred From Surface NO2 Observations | |
Feng S.; Jiang F.; Wang H.; Wang H.; Ju W.; Shen Y.; Zheng Y.; Wu Z.; Ding A. | |
发表日期 | 2020 |
ISSN | 0094-8276 |
卷号 | 47期号:19 |
英文摘要 | The COVID-19 epidemic has substantially limited human activities and affected anthropogenic emissions. In this work, daily NOx emissions are inferred using a regional data assimilation system and hourly surface NO2 measurement over China. The results show that because of the coronavirus outbreak, NOx emissions across the whole mainland China dropped sharply after 31 January, began to rise slightly in certain areas after 10 February, and gradually recover across the country after 20 February. Compared with the emissions before the outbreak, NOx emissions fell by more than 60% and ~30% in many large cities and most small to medium cities, respectively. Overall, NOx emissions were reduced by 36% over China, which were mainly contributed by transportation. Evaluations show that the inverted changes over eastern China are credible, whereas those in western China might be underestimated. These findings are of great significance for exploring the reduction potential of NOx emissions in China. ©2020. The Authors. |
英文关键词 | Earth sciences; Geophysics; Anthropogenic emissions; Coronaviruses; Data assimilation systems; Eastern China; Human activities; Mainland chinas; Reduction potential; Western China; Nitrogen oxides; anthropogenic effect; emission; epidemic; human activity; nitrogen oxides; observational method; traffic emission; China; Coronavirus |
语种 | 英语 |
来源期刊 | Geophysical Research Letters |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/169643 |
作者单位 | Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, International Institute for Earth System Science, Nanjing University, Nanjing, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China; School of Atmospheric Sciences, Nanjing University, Nanjing, China; Chongqing Institute of Meteorological Sciences, Chongqing, China |
推荐引用方式 GB/T 7714 | Feng S.,Jiang F.,Wang H.,et al. NOx Emission Changes Over China During the COVID-19 Epidemic Inferred From Surface NO2 Observations[J],2020,47(19). |
APA | Feng S..,Jiang F..,Wang H..,Wang H..,Ju W..,...&Ding A..(2020).NOx Emission Changes Over China During the COVID-19 Epidemic Inferred From Surface NO2 Observations.Geophysical Research Letters,47(19). |
MLA | Feng S.,et al."NOx Emission Changes Over China During the COVID-19 Epidemic Inferred From Surface NO2 Observations".Geophysical Research Letters 47.19(2020). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Feng S.]的文章 |
[Jiang F.]的文章 |
[Wang H.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Feng S.]的文章 |
[Jiang F.]的文章 |
[Wang H.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Feng S.]的文章 |
[Jiang F.]的文章 |
[Wang H.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。