Cited by 375Climate Change Policy and EconomicsClimate Change and GeoengineeringClimate variability and models

Negative emissions physically needed to keep global warming below 2 °C

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Gasser, T., Guivarch, C., Tachiiri, K., Jones, C. D., Ciais, P.·2015·Nature Communications

Abstract

To limit global warming to <2 °C we must reduce the net amount of CO2 we release into the atmosphere, either by producing less CO2 (conventional mitigation) or by capturing more CO2 (negative emissions). Here, using state-of-the-art carbon–climate models, we quantify the trade-off between these two options in RCP2.6: an Intergovernmental Panel on Climate Change scenario likely to limit global warming below 2 °C. In our best-case illustrative assumption of conventional mitigation, negative emissions of 0.5–3 Gt C (gigatonnes of carbon) per year and storage capacity of 50–250 Gt C are required. In our worst case, those requirements are 7–11 Gt C per year and 1,000–1,600 Gt C, respectively. Because these figures have not been shown to be feasible, we conclude that development of negative emission technologies should be accelerated, but also that conventional mitigation must remain a substantial part of any climate policy aiming at the 2-°C target. It is widely acknowledged that some form of carbon capture will be necessary to limit global warming to less than 2 °C, but to what extent remains unclear. Here, using climate-carbon models, the authors quantify the amount of negative emissions and carbon storage capacity required to meet this target.

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Crossref · 10.1038/ncomms8958

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  • Many experts argue that to meet critical climate goals, global emissions must become net-negative-that is, we must remove more CO2 from the atmosphere than we release.

    “Instead, many experts argue that to meet critical climate goals, global emissions must become net-negative-that is, we must remove more CO 2 from the atmosphere than we release [259,269].”

    From Tackling climate change with machine learning (2023) · cites this paper as [269]

  • There is an inevitable need for negative emissions, even at very high rates of conventional mitigation efforts.

    “The results indicate the inevitable need for negative emissions, even at very high rates of conventional mitigation efforts.”

    From Strategies for mitigation of climate change: a review (2020) · cites this paper as Gasser et al. 2015

  • In the best-case scenario, negative emissions of 0.5-3 Gt C/year and 50-250 Gt C of storage capacity are required to limit global warming to less than 2°C.

    “The results indicated that in the best-case scenario, that is under the best assumptions on conventional mitigation efforts, negative emissions of 0.5-3Gt C year -1 and 50-250 Gt C of storage capacity are required.”

    From Strategies for mitigation of climate change: a review (2020) · cites this paper as Gasser et al. 2015

  • Negative emissions alone should not be relied upon to meet the 2°C target.

    “Furthermore, the study suggests that negative emissions alone should not be relied upon to meet the 2 °C target.”

    From Strategies for mitigation of climate change: a review (2020) · cites this paper as Gasser et al. 2015

  • In the worst-case scenario, negative emissions of 7-11 Gt C/year and 1000-1600 Gt C of storage capacity are required to limit global warming to less than 2°C.

    “Based on a worst-case scenario, negative emissions of 7-11 Gt C year -1 and 1000-1600 Gt C of storage capacity are required.”

    From Strategies for mitigation of climate change: a review (2020) · cites this paper as Gasser et al. 2015

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Research works printed but not linked: 5

  1. Collins, M. et al. in Climate Change 2013: The Physical Science Basis. (eds Stocker, T. F. et al.) (Cambridge Univ. Press, 2013).
  2. Allwood, J. M., Bosetti, V., Dubash, N. K., Go ´mez-Echeverri, L. & von Stechow, C. in: Climate Change 2014: Mitigation of Climate Change (eds Edenhofer, O. et al.) (Cambridge Univ. Press, 2013).
  3. Ciais, P. et al. in: Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) (Cambridge Univ. Press, 2013).
  4. Gasser, T. Attribution Re ´gionalise ´e des Causes Anthropiques du Changement Climatique (in French). PhD thesis, Universite ´Pierre et Marie Curie (2014).
  5. Benson, S. M. et al., Chapter 13 -Carbon Capture and Storage. In Global Energy Assessment -Toward a Sustainable Future, Cambridge University Press, Cambridge, UK and New York, NY, USA and the International Institute for Applied Systems Analysis, Laxenburg, Austria, 993-1068, (2012).

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Authors
Gasser, T., Guivarch, C., Tachiiri, K., Jones, C. D., & Ciais, P.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Japan Agency for Marine-Earth Science and Technology (JP)
  • Met Office (GB)
Corresponding author
Gasser, T.
Venue
Nature Communications
Published
2015-08-03
Volume
6
Issue
1
Pages
7958-7958
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2261642496
Cited by
374
References
39
Citations by year
2026: 22 · 2025: 38 · 2024: 42 · 2023: 36 · 2022: 40 · 2021: 36 · 2020: 28 · 2019: 41 · 2018: 40 · 2017: 28 · 2016: 16 · 2015: 7
FWCI
73.06
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Department for Environment, Food and Rural Affairs, UK Government (GA01101)
  • Met Office (GA01101)
  • International Institute for Applied Systems Analysis
  • FP7 Ideas: European Research Council (610028)
Topics
  • Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Climate Change Policy and Economics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate Change and Geoengineering
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
Keywords
carbon dioxide removal, 2°C target, carbon capture and storage, carbon storage capacity, CO2 emission reduction, climate policy

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