Regional and seasonal partitioning of water and temperature controls on global land carbon uptake variability
In: Nature Communications, 13, Art. No. 3469, (2022-06-16, 2022
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Global fluctuations in annual land carbon uptake (NEEIAV) depend on water and temperature variability, yet debate remains about local and seasonal controls of the global dependences. Here, we quantify regional and seasonal contributions to the correlations of globally-averaged NEEIAV against terrestrial water storage (TWS) and temperature, and respective uncertainties, using three approaches: atmospheric inversions, process-based vegetation models, and data-driven models. The three approaches agree that the tropics contribute over 63% of the global correlations, but differ on the dominant driver of the global NEEIAV, because they disagree on seasonal temperature effects in the Northern Hemisphere (NH, >25°N). In the NH, inversions and process-based models show inter-seasonal compensation of temperature effects, inducing a global TWS dominance supported by observations. Data-driven models show weaker seasonal compensation, thereby estimating a global temperature dominance. We provide a roadmap to fully understand drivers of global NEEIAV and discuss their implications for future carbon–climate feedbacks. ; © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Received 02 November 2020; Accepted 30 May 2022; ...
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Regional and seasonal partitioning of water and temperature controls on global land carbon uptake variability
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Autor/in / Beteiligte Person: | Wang, Kai ; Bastos, Ana ; Ciais, Philippe ; Wang, Xuhui ; Rödenbeck, Christian ; Gentine, Pierre ; Chevallier, Frédéric ; Humphrey, Vincent W. ; Huntingford, Chris ; O'Sullivan, Michael ; Seneviratne, Sonia I. ; Sitch, Stephen ; Piao, Shilong |
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Zeitschrift: | Nature Communications, 13, Art. No. 3469, (2022-06-16, 2022 |
Veröffentlichung: | Nature Publishing Group, 2022 |
Medientyp: | academicJournal |
DOI: | 10.1038/s41467-022-31175-w |
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