Local Anomalies in the Column-Averaged Dry Air Mole Fractions of Carbon Dioxide Across the Globe During the First Months of the Coronavirus Recession

doi:10.1029/2020GL090244

	Local Anomalies in the Column-Averaged Dry Air Mole Fractions of Carbon Dioxide Across the Globe During the First Months of the Coronavirus Recession
	Chevallier, Frederic 1; Zheng, Bo 1; Broquet, Gregoire 1; Ciais, Philippe 1; Liu, Zhu 2; Davis, Steven J.3; Deng, Zhu 2; Wang, Yilong 4; Breon, Francois-Marie 1; O'Dell, Christopher W.5
刊名	GEOPHYSICAL RESEARCH LETTERS
	2020-11-28
卷号	47 期号:22 页码:9
关键词	carbon dioxide emissions OCO‐ 2 Paris Agreement plume satellite
ISSN号	0094-8276
DOI	10.1029/2020GL090244
通讯作者	Chevallier, Frederic(frederic.chevallier@lsce.ipsl.fr)
英文摘要	We use a global transport model and satellite retrievals of the carbon dioxide (CO2) column average to explore the impact of CO2 emissions reductions that occurred during the economic downturn at the start of the Covid-19 pandemic. The changes in the column averages are substantial in a few places of the model global grid, but the induced gradients are most often less than the random errors of the retrievals. The current necessity to restrict the quality-assured column retrievals to almost cloud-free areas appears to be a major obstacle in identifying changes in CO2 emissions. Indeed, large changes have occurred in the presence of clouds, and in places that were cloud free in 2020, the comparison with previous years is hampered by different cloud conditions during these years. We therefore recommend to favor all-weather CO2 monitoring systems, at least in situ, to support international efforts to reduce emissions.
WOS关键词	CO2 EMISSIONS ; SPACE
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000595819700065
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156469]
专题	中国科学院地理科学与资源研究所
通讯作者	Chevallier, Frederic
作者单位	1.Univ Paris Saclay, Lab Sci Climat & Environm, CEA CNRS UVSQ, LSCE IPSL, Gif Sur Yvette, France 2.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China 3.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA USA 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 5.Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA
推荐引用方式 GB/T 7714	Chevallier, Frederic,Zheng, Bo,Broquet, Gregoire,et al. Local Anomalies in the Column-Averaged Dry Air Mole Fractions of Carbon Dioxide Across the Globe During the First Months of the Coronavirus Recession[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(22):9.
APA	Chevallier, Frederic.,Zheng, Bo.,Broquet, Gregoire.,Ciais, Philippe.,Liu, Zhu.,...&O'Dell, Christopher W..(2020).Local Anomalies in the Column-Averaged Dry Air Mole Fractions of Carbon Dioxide Across the Globe During the First Months of the Coronavirus Recession.GEOPHYSICAL RESEARCH LETTERS,47(22),9.
MLA	Chevallier, Frederic,et al."Local Anomalies in the Column-Averaged Dry Air Mole Fractions of Carbon Dioxide Across the Globe During the First Months of the Coronavirus Recession".GEOPHYSICAL RESEARCH LETTERS 47.22(2020):9.