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Terrestrial ecosyst...
Terrestrial ecosystem model performance in simulating productivity and its vulnerability to climate change in the northern permafrost region
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- Xia, Jianyang (författare)
- East China Normal University
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- McGuire, A. David (författare)
- University of Alaska Fairbanks
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- Lawrence, David (författare)
- National Center for Atmospheric Research
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- Burke, Eleanor (författare)
- Met Office Hadley Centre for Climate Change
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- Chen, Guangsheng (författare)
- Oak Ridge National Laboratory
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- Chen, Xiaodong (författare)
- University of Washington
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- Delire, Christine (författare)
- Centre National de Recherches Météorologiques, Meteo-France
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- Koven, Charles (författare)
- Lawrence Berkeley National Laboratory
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- MacDougall, Andrew H. (författare)
- University of Victoria
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- Peng, Shushi (författare)
- Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE),Laboratoire des Sciences du Climat et de l'Environnement,University Grenoble Alpes
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- Rinke, Annette (författare)
- Alfred-Wegener Institute for Polar and Marine Research, Potsdam,Beijing Normal University
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- Saito, Kazuyuki (författare)
- Japan Agency for Marine-Earth Science and Technology
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- Zhang, Wenxin (författare)
- University of Copenhagen
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- Alkama, Ramdane (författare)
- Centre National de Recherches Météorologiques, Meteo-France
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- Bohn, Theodore J. (författare)
- University of Washington
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- Ciais, Philippe (författare)
- Laboratoire des Sciences du Climat et de l'Environnement
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- Decharme, Bertrand (författare)
- Centre National de Recherches Météorologiques, Meteo-France
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- Gouttevin, Isabelle (författare)
- Laboratoire des Sciences du Climat et de l'Environnement,National Research Institute Of Science And Technology For Environment And Agriculture (irstea),Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE)
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- Hajima, Tomohiro (författare)
- Japan Agency for Marine-Earth Science and Technology
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- Hayes, Daniel J. (författare)
- University of Maine
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- Huang, Kun (författare)
- East China Normal University
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- Ji, Duoying (författare)
- Beijing Normal University
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- Krinner, Gerhard (författare)
- Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE),University Grenoble Alpes
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- Lettenmaier, Dennis P. (författare)
- University of Washington
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- Miller, Paul A. (författare)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science
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- Moore, John C. (författare)
- Beijing Normal University
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- Smith, Benjamin (författare)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science
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- Sueyoshi, Tetsuo (författare)
- National Institute of Polar Research (NIPR),Japan Agency for Marine-Earth Science and Technology
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- Shi, Zheng (författare)
- University of Oklahoma
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- Yan, Liming (författare)
- East China Normal University
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- Liang, Junyi (författare)
- University of Oklahoma
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- Jiang, Lifen (författare)
- University of Oklahoma
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- Zhang, Qian (författare)
- Beijing Normal University
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- Luo, Yiqi (författare)
- Tsinghua University,University of Oklahoma
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(creator_code:org_t)
- 2017
- 2017
- Engelska.
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Ingår i: Journal of Geophysical Research - Biogeosciences. - 2169-8953. ; 122:2, s. 430-446
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Realistic projection of future climate-carbon (C) cycle feedbacks requires better understanding and an improved representation of the C cycle in permafrost regions in the current generation of Earth system models. Here we evaluated 10 terrestrial ecosystem models for their estimates of net primary productivity (NPP) and responses to historical climate change in permafrost regions in the Northern Hemisphere. In comparison with the satellite estimate from the Moderate Resolution Imaging Spectroradiometer (MODIS; 246±6gCm-2yr-1), most models produced higher NPP (309±12gCm-2yr-1) over the permafrost region during 2000-2009. By comparing the simulated gross primary productivity (GPP) with a flux tower-based database, we found that although mean GPP among the models was only overestimated by 10% over 1982-2009, there was a twofold discrepancy among models (380 to 800gCm-2yr-1), which mainly resulted from differences in simulated maximum monthly GPP (GPPmax). Most models overestimated C use efficiency (CUE) as compared to observations at both regional and site levels. Further analysis shows that model variability of GPP and CUE are nonlinearly correlated to variability in specific leaf area and the maximum rate of carboxylation by the enzyme Rubisco at 25°C (Vcmax_25), respectively. The models also varied in their sensitivities of NPP, GPP, and CUE to historical changes in climate and atmospheric CO2 concentration. These results indicate that model predictive ability of the C cycle in permafrost regions can be improved by better representation of the processes controlling CUE and GPPmax as well as their sensitivity to climate change.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Nyckelord
- Arctic
- Carbon use efficiency
- Climate warming
- CO elevation
- High latitudes
- Model intercomparison
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Xia, Jianyang
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McGuire, A. Davi ...
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Lawrence, David
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Burke, Eleanor
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Chen, Guangsheng
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Chen, Xiaodong
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visa fler...
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Delire, Christin ...
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Koven, Charles
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MacDougall, Andr ...
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Peng, Shushi
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Rinke, Annette
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Saito, Kazuyuki
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Zhang, Wenxin
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Alkama, Ramdane
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Bohn, Theodore J ...
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Ciais, Philippe
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Decharme, Bertra ...
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Gouttevin, Isabe ...
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Hajima, Tomohiro
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Hayes, Daniel J.
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Huang, Kun
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Ji, Duoying
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Krinner, Gerhard
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Lettenmaier, Den ...
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Miller, Paul A.
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Moore, John C.
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Smith, Benjamin
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Sueyoshi, Tetsuo
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Shi, Zheng
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Yan, Liming
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Liang, Junyi
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Jiang, Lifen
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Zhang, Qian
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Luo, Yiqi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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och Ekologi
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NATURVETENSKAP
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och Geovetenskap och ...
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och Klimatforskning
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