Cited by 117Climate Change Policy and EconomicsSustainability and Climate Change GovernanceClimate Change and Sustainable Development

Fusing subnational with national climate action is central to decarbonization: the case of the United States

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Hultman, Nathan E., Clarke, Leon, Frisch, Carla, Kennedy, Kevin, McJeon, Haewon, Cyrs, Tom, Hansel, Pete, Bodnar, Paul +21 more·2020·Nature Communications

Abstract

Approaches that root national climate strategies in local actions will be essential for all countries as they develop new nationally determined contributions under the Paris Agreement. The potential impact of climate action from non-national actors in delivering higher global ambition is significant. Sub-national action in the United States provides a test for how such actions can accelerate emissions reductions. We aggregated U.S. state, city, and business commitments within an integrated assessment model to assess how a national climate strategy can be built upon non-state actions. We find that existing commitments alone could reduce emissions 25% below 2005 levels by 2030, and that enhancing actions by these actors could reduce emissions up to 37%. We show how these actions can provide a stepped-up basis for additional federal action to reduce emissions by 49%—consistent with 1.5 °C. Our analysis demonstrates sub-national actions can lead to substantial reductions and support increased national action.

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  • Currently, 25 US governors have committed to meeting the goals of the Paris Climate Agreement.

    “Currently, 25 US governors have committed to meeting the goals of the Paris Climate Agreement (9), and 23 of these, and the District of Columbia, have set economy-wide GHG reduction targets using statutory and/or legally binding executive action (10).”

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  1. [16]NewClimate Institute, Data-Driven Lab, PBL, German Development Institute/Deutsches Institut für Entwicklungspolitik (DIE), Blavatnik & School of Government, University of Oxford. Global Climate Action from Cities, Regions and Businesses: Impact of Individual Actors and Cooperative Initiatives on Global and National Emissions. https://newclimate.org/wp-content/uploads/2019/09/Report-Global-Climate-Action-from-Cities-Regions-and-Businesses_2019.pdf (2019).

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Authors
Hultman, N. E., Clarke, L., Frisch, C., Kennedy, K., McJeon, H., Cyrs, T., Hansel, P., Bodnar, P., Manion, M., Edwards, M. R., Cui, R., Bowman, C., Lund, J., Westphal, M. I., Clapper, A., Jaeger, J., Sen, A., Lou, J., Saha, D., Jaglom, W., Calhoun, K., Igusky, K., deWeese, J., Hammoud, K., Altimirano, J. C., Dennis, M., Henderson, C., Zwicker, G., & O’Neill, J.
Affiliations
  • University of Maryland, College Park (US)
  • Rocky Mountain Institute (US)
  • World Resources Institute (US)
  • University of Wisconsin–Madison (US)
Corresponding author
Hultman, Nathan E.
Venue
Nature Communications
Published
2020-10-16
Volume
11
Issue
1
Pages
5255-5255
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3092988441
Cited by
116
References
23
Citations by year
2026: 12 · 2025: 29 · 2024: 21 · 2023: 20 · 2022: 14 · 2021: 19 · 2020: 1
FWCI
11.69
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Communities in ADDI (University of the Basque Country) (submittedVersion, cc-by-nc-sa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Hispana (submittedVersion, cc-by-nc-sa)
Funders
Bloomberg Family Foundation
Topics
  • Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Climate Change Policy and Economics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Sustainability and Climate Change Governance
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate Change and Sustainable Development
Keywords
subnational climate action, national climate strategies, decarbonization, emission reduction, Paris Agreement, Nationally Determined Contributions, corporate climate commitments, integrated assessment models, 1.5°C target, United States climate policy, federal climate policy

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