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DOI10.1029/2021JD034664
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
ISSN2169897X
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
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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).
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