气候变化领域集成服务门户(CCPortal): Local Anomalies in the Column-Averaged Dry Air Mole Fractions of Carbon Dioxide Across the Globe During the First Months of the Coronavirus Recession

CCPortal

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 F.; Zheng B.; Broquet G.; Ciais P.; Liu Z.; Davis S.J.; Deng Z.; Wang Y.; Bréon F.-M.; O'Dell C.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
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. ©2020. The Authors.
英文关键词	Random errors; Column retrievals; Coronaviruses; Economic downturn; Global transport; Mole fraction; Monitoring system; Previous year; Satellite retrieval; Carbon dioxide; carbon dioxide; carbon emission; cloud cover; economic conditions; emission control; satellite data; virus; 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/169382
作者单位	Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; Department of Earth System Science, Tsinghua University, Beijing, China; Department of Earth System Science, University of California, Irvine, CA, United States; Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Chevallier F.,Zheng B.,Broquet G.,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],2020,47(22).
APA	Chevallier F..,Zheng B..,Broquet G..,Ciais P..,Liu Z..,...&O'Dell C.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).
MLA	Chevallier F.,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).