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© 2025. This work is published under http://creativecommons.org/licenses/by-nc/4.0/ (the "License"). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Modeling human‐environment feedbacks is critical for assessing the effectiveness of climate change mitigation and adaptation strategies under a changing climate. The Energy Exascale Earth System Model (E3SM) now includes a human component, with the Global Change Analysis Model (GCAM) at its core, that is synchronously coupled with the land and atmosphere components through the E3SM coupling software. Terrestrial productivity is passed from E3SM to GCAM to make climate‐responsive land use and CO2 emission projections for the next 5‐year period, which are interpolated and passed to E3SM annually. Key variables affected by the incorporation of these feedbacks include land use/cover change, crop prices, terrestrial carbon, local surface temperature, and climate extremes. Regional differences are more pronounced than global differences because the effects are driven primarily by differences in land use. This novel system enables a new type of scenario development and provides a powerful modeling framework that facilitates the addition of other feedbacks between these models. This system has the potential to explore how human responses to climate change impacts in a variety of sectors, including heating/cooling energy demand, water management, and energy production, may alter emissions trajectories and Earth system changes.

Details

Title
E3SM‐GCAM: A Synchronously Coupled Human Component in the E3SM Earth System Model Enables Novel Human‐Earth Feedback Research
Author
Di Vittorio, Alan V. 1   VIAFID ORCID Logo  ; Sinha, Eva 2   VIAFID ORCID Logo  ; Hao, Dalei 2   VIAFID ORCID Logo  ; Singh, Balwinder 2   VIAFID ORCID Logo  ; Calvin, Katherine V. 3   VIAFID ORCID Logo  ; Shippert, Tim 2 ; Patel, Pralit 3 ; Bond‐Lamberty, Ben 3   VIAFID ORCID Logo 

 Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA 
 Atmosoheric, Climate, & Earth Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA 
 Pacific Northwest National Laboratory, Joint Global Change Research Institute, College Park, MD, USA 
Section
Research Article
Publication year
2025
Publication date
Jun 1, 2025
Publisher
John Wiley & Sons, Inc.
e-ISSN
19422466
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3223852783
Copyright
© 2025. This work is published under http://creativecommons.org/licenses/by-nc/4.0/ (the "License"). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.