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Transient dynamics ...
Transient dynamics of terrestrial carbon storage : Mathematical foundation and its applications
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- Luo, Yiqi (författare)
- Tsinghua University,University of Oklahoma
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- Shi, Zheng (författare)
- University of Oklahoma
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- Lu, Xingjie (författare)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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- Xia, Jianyang (författare)
- East China Normal University
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- Liang, Junyi (författare)
- University of Oklahoma
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- Jiang, Jiang (författare)
- University of Oklahoma
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- Wang, Ying (författare)
- University of Oklahoma
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- Smith, Matthew J. (författare)
- Microsoft Research Ltd, UK
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- Jiang, Lifen (författare)
- University of Oklahoma
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- Ahlström, Anders (författare)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science,Stanford University
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- Chen, Benito (författare)
- University of Texas
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- Hararuk, Oleksandra (författare)
- McGill University
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- Hastings, Alan (författare)
- University of California, Davis
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- Hoffman, Forrest (författare)
- Oak Ridge National Laboratory
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- Medlyn, Belinda E. (författare)
- Western Sydney University
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- Niu, Shuli (författare)
- Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences
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- Rasmussen, Martin (författare)
- Imperial College London
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- Todd-Brown, Katherine E. O. (författare)
- Pacific Northwest National Laboratory
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- Wang, Ying-Ping (författare)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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(creator_code:org_t)
- 2017-01-12
- 2017
- Engelska 17 s.
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Ingår i: Biogeosciences. - : Copernicus GmbH. - 1726-4170 .- 1726-4189. ; 14:1, s. 145-161
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://www.biogeosc...
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https://lup.lub.lu.s...
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https://doi.org/10.5...
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Abstract
Ämnesord
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- Terrestrial ecosystems have absorbed roughly 30 % of anthropogenic CO2 emissions over the past decades, but it is unclear whether this carbon (C) sink will endure into the future. Despite extensive modeling and experimental and observational studies, what fundamentally determines transient dynamics of terrestrial C storage under global change is still not very clear. Here we develop a new framework for understanding transient dynamics of terrestrial C storage through mathematical analysis and numerical experiments. Our analysis indicates that the ultimate force driving ecosystem C storage change is the C storage capacity, which is jointly determined by ecosystem C input (e.g., net primary production, NPP) and residence time. Since both C input and residence time vary with time, the C storage capacity is time-dependent and acts as a moving attractor that actual C storage chases. The rate of change in C storage is proportional to the C storage potential, which is the difference between the current storage and the storage capacity. The C storage capacity represents instantaneous responses of the land C cycle to external forcing, whereas the C storage potential represents the internal capability of the land C cycle to influence the C change trajectory in the next time step. The influence happens through redistribution of net C pool changes in a network of pools with different residence times. Moreover, this and our other studies have demonstrated that one matrix equation can replicate simulations of most land C cycle models (i.e., physical emulators). As a result, simulation outputs of those models can be placed into a three-dimensional (3-D) parameter space to measure their differences. The latter can be decomposed into traceable components to track the origins of model uncertainty. In addition, the physical emulators make data assimilation computationally feasible so that both C flux-and pool-related datasets can be used to better constrain model predictions of land C sequestration. Overall, this new mathematical framework offers new approaches to understanding, evaluating, diagnosing, and improving land C cycle models.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
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- art (ämneskategori)
- ref (ämneskategori)
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Luo, Yiqi
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Shi, Zheng
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Lu, Xingjie
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Xia, Jianyang
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Liang, Junyi
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Jiang, Jiang
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visa fler...
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Wang, Ying
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Smith, Matthew J ...
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Jiang, Lifen
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Ahlström, Anders
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Chen, Benito
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Hararuk, Oleksan ...
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Hastings, Alan
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Hoffman, Forrest
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Medlyn, Belinda ...
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Niu, Shuli
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Rasmussen, Marti ...
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Todd-Brown, Kath ...
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Wang, Ying-Ping
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