Articles | Volume 22, issue 1
https://doi.org/10.5194/acp-22-395-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-395-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Jan 2022
Research article |
| 12 Jan 2022
| 12 Jan 2022
Methane emissions in the United States, Canada, and Mexico: evaluation of national methane emission inventories and 2010–2017 sectoral trends by inverse analysis of in situ (GLOBALVIEWplus CH4 ObsPack) and satellite (GOSAT) atmospheric observations
School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, Guangdong
Province, China
Harvard John A. Paulson School of Engineering and Applied Sciences,
Harvard University, Cambridge, MA, USA
Guangdong Provincial Observation and Research Station for Climate
Environment and Air Quality Change in the Pearl River Estuary, Zhuhai, Guangdong Province, China
Daniel J. Jacob
Harvard John A. Paulson School of Engineering and Applied Sciences,
Harvard University, Cambridge, MA, USA
Haolin Wang
School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, Guangdong
Province, China
Joannes D. Maasakkers
SRON Netherlands Institute for Space Research, Utrecht, the Netherlands
Yuzhong Zhang
Harvard John A. Paulson School of Engineering and Applied Sciences,
Harvard University, Cambridge, MA, USA
School of Engineering, Westlake University, Hangzhou, Zhejiang Province,
China
Institute of Advanced Technology, Westlake Institute for Advanced Study,
Hangzhou, Zhejiang Province, China
Tia R. Scarpelli
Harvard John A. Paulson School of Engineering and Applied Sciences,
Harvard University, Cambridge, MA, USA
Lu Shen
Harvard John A. Paulson School of Engineering and Applied Sciences,
Harvard University, Cambridge, MA, USA
Harvard John A. Paulson School of Engineering and Applied Sciences,
Harvard University, Cambridge, MA, USA
Melissa P. Sulprizio
Harvard John A. Paulson School of Engineering and Applied Sciences,
Harvard University, Cambridge, MA, USA
Hannah Nesser
Harvard John A. Paulson School of Engineering and Applied Sciences,
Harvard University, Cambridge, MA, USA
A. Anthony Bloom
Jet Propulsion Laboratory, California Institute of Technology, Pasadena,
CA, USA
Shuang Ma
Jet Propulsion Laboratory, California Institute of Technology, Pasadena,
CA, USA
John R. Worden
Jet Propulsion Laboratory, California Institute of Technology, Pasadena,
CA, USA
Shaojia Fan
School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, Guangdong
Province, China
Robert J. Parker
National Centre for Earth Observation, University of Leicester, Leicester,
UK
Earth Observation Science, Department of Physics and Astronomy, University
of Leicester, Leicester, UK
Hartmut Boesch
National Centre for Earth Observation, University of Leicester, Leicester,
UK
Earth Observation Science, Department of Physics and Astronomy, University
of Leicester, Leicester, UK
Ritesh Gautam
Environmental Defense Fund, Washington, DC, USA
Deborah Gordon
RMI, New York, NY, USA
Watson Institute for International and Public Affairs, Brown University,
Providence, RI, USA
Michael D. Moran
Environment and Climate Change Canada, Toronto, ON, Canada
Frances Reuland
RMI, Boulder, CO, USA
Claudia A. Octaviano Villasana
Instituto Nacional de Ecología y Cambio Climático (INECC),
Mexico City, Mexico
Arlyn Andrews
National Oceanic and Atmospheric Administration, Earth System Research
Laboratory, Boulder, CO, USA
Data sets
Multi-laboratory compilation of atmospheric methane data for the period 1957–2017 Cooperative Global Atmospheric Data Integration Project https://doi.org/10.25925/20190108
University of Leicester GOSAT Proxy XCH4 v9.0 Robert Parker, Hartmut Boesch https://doi.org/10.5285/18ef8247f52a4cb6a14013f8235cc1eb
CMS: Global 0.5-deg Wetland Methane Emissions and Uncertainty (WetCHARTs v1.3.1) Carbon Monitoring System https://doi.org/10.3334/ORNLDAAC/1915
Model code and software
GEOS-Chem 12.5.0 The International GEOS-Chem User Community https://doi.org/10.5281/zenodo.3403111
Short summary
We evaluate methane emissions and trends for 2010–2017 in the gridded national emission inventories for the United States, Canada, and Mexico by inversion of in situ and satellite methane observations. We find that anthropogenic methane emissions for all three countries are underestimated in the national inventories, largely driven by oil emissions. Anthropogenic methane emissions in the US peak in 2014, in contrast to the report of a steadily decreasing trend over 2010–2017 from the US EPA.
We evaluate methane emissions and trends for 2010–2017 in the gridded national emission...
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