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  Climate Extreme Versus Carbon Extreme: Responses of Terrestrial Carbon Fluxes to Temperature and Precipitation

Pan, S., Yang, J., Tian, H., Shi, H., Chang, J., Ciais, P., Francois, L., Frieler, K., Fu, B., Hickler, T., Ito, A., Nishina, K., Ostberg, S., Reyer, C. P. O., Schaphoff, S., Steinkamp, J., Zhao, F. (2020): Climate Extreme Versus Carbon Extreme: Responses of Terrestrial Carbon Fluxes to Temperature and Precipitation. - Journal of Geophysical Research: Biogeosciences, 125, 4, e2019JG005252.
https://doi.org/10.1029/2019JG005252

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 Creators:
Pan, Shufen1, Author
Yang, Jia1, Author
Tian, Hanqin1, Author
Shi, Hao1, Author
Chang, Jinfeng1, Author
Ciais, Philippe1, Author
Francois, Louis1, Author
Frieler, Katja2, Author              
Fu, Bojie1, Author
Hickler, Thomas1, Author
Ito, Akihiko1, Author
Nishina, Kazuya1, Author
Ostberg, Sebastian2, Author              
Reyer, Christopher P. O.2, Author              
Schaphoff, Sibyll2, Author              
Steinkamp, Jörg1, Author
Zhao, Fang2, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, Potsdam, ou_persistent13              

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 Abstract: Carbon fluxes at the land‐atmosphere interface are strongly influenced by weather and climate conditions. Yet what is usually known as “climate extremes” does not always translate into very high or low carbon fluxes or so‐called “carbon extremes.” To reveal the patterns of how climate extremes influence terrestrial carbon fluxes, we analyzed the interannual variations in ecosystem carbon fluxes simulated by the Terrestrial Biosphere Models (TBMs) in the Inter‐Sectoral Impact Model Intercomparison Project. At the global level, TBMs simulated reduced ecosystem net primary productivity (NPP; 18.5 ± 9.3 g C m−2 yr−1), but enhanced heterotrophic respiration (Rh; 7 ± 4.6 g C m−2 yr−1) during extremely hot events. TBMs also simulated reduced NPP (60.9 ± 24.4 g C m−2 yr−1) and reduced Rh (16.5 ± 11.4 g C m−2 yr−1) during extreme dry events. Influences of precipitation extremes on terrestrial carbon uptake were larger in the arid/semiarid zones than other regions. During hot extremes, ecosystems in the low latitudes experienced a larger reduction in carbon uptake. However, a large fraction of carbon extremes did not occur in concert with either temperature or precipitation extremes. Rather these carbon extremes are likely to be caused by the interactive effects of the concurrent temperature and precipitation anomalies. The interactive effects showed considerable spatial variations with the largest effects on NPP in South America and Africa. Additionally, TBMs simulated a stronger sensitivity of ecosystem productivity to precipitation than satellite estimates. This study provides new insights into the complex ecosystem responses to climate extremes, especially the emergent properties of carbon dynamics resulting from compound climate extremes.

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 Dates: 2020-04-082020
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1029/2019JG005252
PIKDOMAIN: RD2 - Climate Resilience
PIKDOMAIN: RD3 - Transformation Pathways
PIKDOMAIN: RD1 - Earth System Analysis
MDB-ID: No data to archive
Organisational keyword: RD1 - Earth System Analysis
Organisational keyword: RD2 - Climate Resilience
Organisational keyword: RD3 - Transformation Pathways
Working Group: Earth System Model Development
Working Group: Terrestrial Safe Operating Space
Working Group: Forest and Ecosystem Resilience
Working Group: Data-Centric Modeling of Cross-Sectoral Impacts
Working Group: Land Use and Resilience
 Degree: -

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Title: Journal of Geophysical Research: Biogeosciences
Source Genre: Journal, SCI, Scopus, p3
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Pages: - Volume / Issue: 125 (4) Sequence Number: e2019JG005252 Start / End Page: - Identifier: ISSN: 2169-8953
Other: Wiley
Other: American Geophysical Union (AGU)
Other: 2169-8961
CoNE: https://publications.pik-potsdam.de/cone/journals/resource/jgr_biogeosciences
Publisher: American Geophysical Union (AGU)