气候变化领域集成服务门户(CCPortal): What Are the Different Measures of Mobility Telling Us About Surface Transportation CO2 Emissions During the COVID-19 Pandemic?

CCPortal

DOI	10.1029/2021JD034664
	What Are the Different Measures of Mobility Telling Us About Surface Transportation CO2 Emissions During the COVID-19 Pandemic?
	Gensheimer J.; Turner A.J.; Shekhar A.; Wenzel A.; Keutsch F.N.; Chen J.
发表日期	2021
ISSN	2169897X
卷号	126 期号:11
英文摘要	The COVID-19 pandemic led to widespread reductions in mobility and induced observable changes in atmospheric emissions. Recent work has employed novel mobility data sets as a proxy for trace gas emissions from traffic by scaling CO2 emissions linearly with those near-real-time mobility data. Yet, there has been little work evaluating these emission numbers. Here, we systematically compare these mobility data sets to traffic data from local governments in seven diverse urban and national/state regions to characterize the magnitude of errors that result from using the mobility data. We observe differences in excess of 60% between these mobility data sets and local traffic data. We could not find a general functional relationship between the mobility data and traffic flow over all the regions and observe higher deviations from using such general relationships than the original data. Finally, we give an overview of the potential errors that come from estimating CO2 emissions using (mobility or traffic) activity data. Future work should be cautious while using these mobility metrics for emission estimates. © 2021. The Authors.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185143
作者单位	Environmental Sensing and Modeling, Technical University of Munich (TUM), Munich, Germany; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Environmental Systems Science, ETH Zurich, Zürich, Switzerland; School of Engineering and Applied Sciences and Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, United States
推荐引用方式 GB/T 7714	Gensheimer J.,Turner A.J.,Shekhar A.,et al. What Are the Different Measures of Mobility Telling Us About Surface Transportation CO2 Emissions During the COVID-19 Pandemic?[J],2021,126(11).
APA	Gensheimer J.,Turner A.J.,Shekhar A.,Wenzel A.,Keutsch F.N.,&Chen J..(2021).What Are the Different Measures of Mobility Telling Us About Surface Transportation CO2 Emissions During the COVID-19 Pandemic?.Journal of Geophysical Research: Atmospheres,126(11).
MLA	Gensheimer J.,et al."What Are the Different Measures of Mobility Telling Us About Surface Transportation CO2 Emissions During the COVID-19 Pandemic?".Journal of Geophysical Research: Atmospheres 126.11(2021).