Articles | Volume 16, issue 6
https://doi.org/10.5194/acp-16-3843-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-3843-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
22 Mar 2016
Research article |
| 22 Mar 2016
Toward consistency between trends in bottom-up CO2 emissions and top-down atmospheric measurements in the Los Angeles megacity
Sally Newman
CORRESPONDING AUTHOR
Division of Geological and Planetary Sciences, California
Institute of Technology, Pasadena, CA 91125, USA
Xiaomei Xu
Department of Earth System Science, University of
California, Irvine, CA 92697, USA
Kevin R. Gurney
School of Life Sciences, Arizona State University, Tempe,
AZ 85287, USA
Ying Kuang Hsu
Monitoring and Laboratory Division, Air Resources Board,
Sacramento, CA 95811, USA
King Fai Li
Department of Applied Mathematics, University of
Washington, Seattle, WA 98195, USA
Xun Jiang
Department of Earth and Atmospheric Sciences, University
of Houston, Houston, TX 77004, USA
Ralph Keeling
Scripps Institution of Oceanography, University of
California, San Diego, La Jolla, CA 92037, USA
Earth Atmospheric Science, Jet Propulsion Laboratory,
California Institute of Technology, Pasadena, CA 91109, USA
now at: Department of Meteorology, Pennsylvania State
University, University Park, PA 16802, USA
Darragh O'Keefe
School of Life Sciences, Arizona State University, Tempe,
AZ 85287, USA
Risa Patarasuk
School of Life Sciences, Arizona State University, Tempe,
AZ 85287, USA
Kam Weng Wong
Earth Atmospheric Science, Jet Propulsion Laboratory,
California Institute of Technology, Pasadena, CA 91109, USA
Preeti Rao
Earth Atmospheric Science, Jet Propulsion Laboratory,
California Institute of Technology, Pasadena, CA 91109, USA
Marc L. Fischer
Environmental Energy Area, E. O. Lawrence Berkeley
National Laboratory, Berkeley, CA 94720, USA
Yuk L. Yung
Division of Geological and Planetary Sciences, California
Institute of Technology, Pasadena, CA 91125, USA
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Short summary
Combining 14C and 13C data from the Los Angeles, CA megacity with background data allows source attribution of CO2 emissions among biosphere, natural gas, and gasoline. The 8-year record of CO2 emissions from fossil fuel burning is consistent with "The Great Recession" of 2008–2010. The long-term trend and source attribution are consistent with government inventories. Seasonal patterns agree with the high-resolution Hestia-LA emission data product, when seasonal wind directions are considered.
Combining 14C and 13C data from the Los Angeles, CA megacity with background data allows source...
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