State-wide California 2020 carbon dioxide budget estimated with OCO-2 and OCO-3 satellite data

Johnson, Matthew S.; Hamilton, Sofia D.; Jeong, Seongeun; Cui, Yu Yan; Wu, Dien; Turner, Alex; Fischer, Marc

doi:https://doi.org/10.5194/acp-25-8475-2025

Articles | Volume 25, issue 15

https://doi.org/10.5194/acp-25-8475-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-8475-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 15

Research article

|

05 Aug 2025

Research article |

| 05 Aug 2025

State-wide California 2020 carbon dioxide budget estimated with OCO-2 and OCO-3 satellite data

Matthew S. Johnson, Sofia D. Hamilton, Seongeun Jeong, Yu Yan Cui, Dien Wu, Alex Turner, and Marc Fischer

Supplement

https://doi.org/10.5194/acp-25-8475-2025-supplement

Data sets

OCO-2 Level 2 bias-corrected XCO2 and other select fields from the full-physics retrieval aggregated as daily files, Retrospective processing V11.1r OCO Science Team et al. https://doi.org/10.5067/8E4VLCK16O6Q

OCO-3 Level 2 geolocated XCO2 retrievals results, physical model, Retrospective Processing V10r OCO Science Team et al. https://doi.org/10.5067/D9S8ZOCHCADE

Vulcan: High-Resolution Hourly Fossil Fuel CO2 Emissions in USA, 2010-2015 K. R. Gurney et al. https://doi.org/10.3334/ORNLDAAC/1810

GHG Emissions Inventory (GHG EI) 2000-2020 California Air Resources Board https://ww2.arb.ca.gov/ghg-inventory-data

Global Monitoring Laboratory NOAA https://gml.noaa.gov/aftp/products/carbontracker/co2/CT-NRT.v2022-1/fluxes/daily/

Model data for "Global biomass burning fuel consumption and emissions at 500-m spatial resolution based on the Global Fire Emissions Database (GFED)'' (Version v2) [Data set] D. van Wees et al. https://doi.org/10.5281/zenodo.12670427

Model code and software

Urban Biogenic CO2 fluxes: GPP, Reco and NEE Estimates from SMUrF, 2010-2019 D. Wu and J. C. Lin https://doi.org/10.3334/ORNLDAAC/1899

geoschem/GCClassic: GCClassic 14.4.1 (14.4.1) The International GEOS-Chem User Community https://doi.org/10.5281/zenodo.12584192

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Short summary

Satellites, such as NASA's Orbiting Carbon Observatory-2 and -3 (OCO-2 and OCO-3, respectively), retrieve carbon dioxide (CO₂) concentrations, which provide vital information for estimating surface CO₂ emissions. Here, we investigate the ability of OCO-2/3 retrievals to constrain CO₂ emissions for the state of California for the major emission sectors (i.e., fossil fuels, net ecosystem exchange, and wildfire).