Quantifying Human-Mediated Carbon Cycle Feedbacks
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Pacific Northwest National Lab. (PNNL), College Park, MD (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Dept. of Earth and Planetary Sciences
Changes in land and ocean carbon storage in response to elevated atmospheric carbon dioxide concentrations and associated climate change, known as the concentration–carbon and climate–carbon feedbacks, are principal controls on the response of the climate system to anthropogenic greenhouse gas emissions. Such feedbacks have typically been quantified in the context of natural ecosystems, but land management activities are also responsive to future atmospheric carbon and climate changes. Here we show that inclusion of such human–driven responses within an Earth system model shifts both the terrestrial concentration–carbon and climate–carbon feedbacks toward increased carbon storage. Furthermore, we introduce a conceptual framework for decomposing these changes into separate concentration–land cover, climate–land cover, and land cover–carbon effects, providing a parsimonious means to diagnose sources of variation across numerical models capable of estimating such feedbacks.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC05-76RL01830; AC05‐00OR22725; AC02‐05CH11231; AC05-00OR22725; AC02-05CH11231
- OSTI ID:
- 1562907
- Alternate ID(s):
- OSTI ID: 1479511; OSTI ID: 1480629; OSTI ID: 1483268
- Report Number(s):
- PNNL-SA-133018; TRN: US2000775
- Journal Information:
- Geophysical Research Letters, Vol. 45, Issue 20; ISSN 0094-8276
- Publisher:
- American Geophysical UnionCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
A review of the major drivers of the terrestrial carbon uptake: model-based assessments, consensus, and uncertainties
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journal | September 2019 |
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