Articles | Volume 18, issue 22
https://doi.org/10.5194/acp-18-16271-2018
© Author(s) 2018. 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-18-16271-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Nov 2018
Research article |
| 16 Nov 2018
| 16 Nov 2018
Southern California megacity CO2, CH4, and CO flux estimates using ground- and space-based remote sensing and a Lagrangian model
Jacob K. Hedelius
CORRESPONDING AUTHOR
Division of Geology and Planetary Science, California Institute of Technology, Pasadena, California, USA
University of Toronto, Department of Physics, Toronto, Ontario, Canada
Junjie Liu
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
Division of Geology and Planetary Science, California Institute of Technology, Pasadena, California, USA
Tomohiro Oda
Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD, USA
Goddard Earth Sciences Technology and Research, Universities Space Research Association, Columbia, MD, USA
Shamil Maksyutov
Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
Coleen M. Roehl
Division of Geology and Planetary Science, California Institute of Technology, Pasadena, California, USA
Laura T. Iraci
NASA Ames Research Center, Mountain View, CA, USA
James R. Podolske
NASA Ames Research Center, Mountain View, CA, USA
Patrick W. Hillyard
Bay Area Environmental Research Institute, Petaluma, CA
Jianming Liang
School of Life Science, Arizona State University, Tempe, Arizona, USA
Kevin R. Gurney
School of Life Science, Arizona State University, Tempe, Arizona, USA
School of Informatics, Computing and Cyber Systems, Northern Arizona University, Flagstaff, Arizona, USA
Debra Wunch
University of Toronto, Department of Physics, Toronto, Ontario, Canada
Paul O. Wennberg
Division of Geology and Planetary Science, California Institute of Technology, Pasadena, California, USA
Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA
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Saved (final revised paper)
Latest update: 11 Jun 2026
Short summary
Human activities can cause concentrated emissions of greenhouse gases and other pollutants from cities. There is ongoing effort to convert new satellite observations of pollutants into fluxes for many cities. Here we present a method for determining the flux of three species (CO2, CH4, and CO) from the greater LA area using satellite (CO2 only) and ground-based (all three species) observations. We run tests to estimate uncertainty and find the direct net CO2 flux is 104 ± 26 Tg CO2 yr−1.
Human activities can cause concentrated emissions of greenhouse gases and other pollutants from...
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