Southern California megacity CO<sub>2</sub>, CH<sub>4</sub>, and CO flux estimates using ground- and space-based remote sensing and a Lagrangian model

Hedelius, Jacob K.; Liu, Junjie; Oda, Tomohiro; Maksyutov, Shamil; Roehl, Coleen M.; Iraci, Laura T.; Podolske, James R.; Hillyard, Patrick W.; Liang, Jianming; Gurney, Kevin R.; Wunch, Debra; Wennberg, Paul O.

doi:https://doi.org/10.5194/acp-18-16271-2018

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.

https://doi.org/10.5194/acp-18-16271-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 22

Research article

|

16 Nov 2018

Research article |

| 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, Junjie Liu, Tomohiro Oda, Shamil Maksyutov, Coleen M. Roehl, Laura T. Iraci, James R. Podolske, Patrick W. Hillyard, Jianming Liang, Kevin R. Gurney, Debra Wunch, and Paul O. Wennberg

Data sets

TCCON data from Armstrong Flight Research Center L. Iraci, J. Podolske, P. Hillyard, C. Roehl, P. O. Wennberg, J.-F. Blavier, J. Landeros, N. Allen, D. Wunch, J. Zavaleta, E. Quigley, G. Osterman, R. Albertson, K. Dunwoody, and H. Boyden https://doi.org/10.14291/tccon.ggg2014.edwards01R1/1255068,

TCCON data from California Institute of Technology P. O. Wennberg, D. Wunch, C. Roehl, J.-F. Blavier, G. C. Toon, and N. Allen https://doi.org/10.14291/tccon.ggg2014.pasadena01.R1/1182415

OCO-2 Level 2 bias-corrected XCO2 and other select fields from the fullphysics retrieval aggregated as daily files OCO-2 Science Team, M. Gunson, and A. Eldering https://doi.org/10.5067/XR7ZWYSKP7D0

ODIAC Fossil Fuel CO2 Emissions Dataset (Version ODIAC2016) T. Oda, and S. Maksyutov https://doi.org/10.17595/20170411.001

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.

Southern California megacity CO2, CH4, and CO flux estimates using ground- and space-based remote sensing and a Lagrangian model

Data sets

Southern California megacity CO₂, CH₄, and CO flux estimates using ground- and space-based remote sensing and a Lagrangian model