Global evaluation of terrestrial biogeochemistry in the Energy Exascale Earth System Model (E3SM) and the role of the phosphorus cycle in the historical terrestrial carbon balance

Yang, Xiaojuan; Thornton, Peter; Ricciuto, Daniel; Wang, Yilong; Hoffman, Forrest

doi:https://doi.org/10.5194/bg-20-2813-2023

Articles | Volume 20, issue 14

https://doi.org/10.5194/bg-20-2813-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-20-2813-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 14

Research article

|

17 Jul 2023

Research article |

| 17 Jul 2023

Global evaluation of terrestrial biogeochemistry in the Energy Exascale Earth System Model (E3SM) and the role of the phosphorus cycle in the historical terrestrial carbon balance

Xiaojuan Yang, Peter Thornton, Daniel Ricciuto, Yilong Wang, and Forrest Hoffman

Supplement

https://doi.org/10.5194/bg-20-2813-2023-supplement

Data sets

ELMv1 outputs for global scale evaluation X. Yang https://doi.org/10.6084/m9.figshare.12021348.v1

Model code and software

Energy Exascale Earth System Model v1.0 E3SM Project https://doi.org/10.11578/E3SM/dc.20180418.36

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Short summary

We evaluated the performance of a land surface model (ELMv1-CNP) that includes both nitrogen (N) and phosphorus (P) limitation on carbon cycle processes. We show that ELMv1-CNP produces realistic estimates of present-day carbon pools and fluxes. We show that global C sources and sinks are significantly affected by P limitation. Our study suggests that introduction of P limitation in land surface models is likely to have substantial consequences for projections of future carbon uptake.