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Title: Quantifying Human-Mediated Carbon Cycle Feedbacks

Abstract

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.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Pacific Northwest National Lab. (PNNL), College Park, MD (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Dept. of Earth and Planetary Sciences
Publication Date:
Research Org.:
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 Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1562907
Alternate Identifier(s):
OSTI ID: 1479511; OSTI ID: 1480629; OSTI ID: 1483268
Report Number(s):
PNNL-SA-133018
Journal ID: ISSN 0094-8276; TRN: US2000775
Grant/Contract Number:  
AC05-76RL01830; AC05‐00OR22725; AC02‐05CH11231; AC05-00OR22725; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 45; Journal Issue: 20; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; carbon cycle feedbacks; climate impacts on agriculture; coupled human and natural systems

Citation Formats

Jones, Andrew D., Calvin, Katherine V., Shi, Xiaoying, Di Vittorio, Alan V., Bond‐Lamberty, Ben, Thornton, Peter E., and Collins, William D. Quantifying Human-Mediated Carbon Cycle Feedbacks. United States: N. p., 2018. Web. doi:10.1029/2018GL079350.
Jones, Andrew D., Calvin, Katherine V., Shi, Xiaoying, Di Vittorio, Alan V., Bond‐Lamberty, Ben, Thornton, Peter E., & Collins, William D. Quantifying Human-Mediated Carbon Cycle Feedbacks. United States. https://doi.org/10.1029/2018GL079350
Jones, Andrew D., Calvin, Katherine V., Shi, Xiaoying, Di Vittorio, Alan V., Bond‐Lamberty, Ben, Thornton, Peter E., and Collins, William D. Mon . "Quantifying Human-Mediated Carbon Cycle Feedbacks". United States. https://doi.org/10.1029/2018GL079350. https://www.osti.gov/servlets/purl/1562907.
@article{osti_1562907,
title = {Quantifying Human-Mediated Carbon Cycle Feedbacks},
author = {Jones, Andrew D. and Calvin, Katherine V. and Shi, Xiaoying and Di Vittorio, Alan V. and Bond‐Lamberty, Ben and Thornton, Peter E. and Collins, William D.},
abstractNote = {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.},
doi = {10.1029/2018GL079350},
journal = {Geophysical Research Letters},
number = 20,
volume = 45,
place = {United States},
year = {Mon Oct 08 00:00:00 EDT 2018},
month = {Mon Oct 08 00:00:00 EDT 2018}
}

Journal Article:
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Cited by: 7 works
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Figures / Tables:

Figure 1 Figure 1: Estimates for the terrestrial concentration-carbon feedback parameter ($β$L) and climate-carbon feedback parameter ($γ$L) with (red circles) and without (blue circles) the inclusion of human-mediated land use and land cover change (LULCC) feedbacks. Twenty estimates for each parameter combination are shown, one calculated using each of the final 20more » years (2070–2089 CE) of a 21st century forcing scenario based on the Representative Concentration Pathway 8.5. Blue (without human-mediated LULCC feedbacks) and red ovals (with human-mediated LULCC feedbacks) indicate the 95% confidence interval surrounding the joint distribution of parameter estimates.« less

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