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Potential and costs required for methane removal to compete with BECCS as a mitigation option

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Název: Potential and costs required for methane removal to compete with BECCS as a mitigation option
Autoři: Gaucher, Yann, Tanaka, Katsumasa, Johansson, Daniel, 1975, Boucher, Olivier, Ciais, Philippe
Zdroj: Environmental Research Letters Data for Potential and costs required for methane removal to compete with BECCS as a mitigation option. 20(2)
Témata: greenhouse gas metrics, overshoot scenarios, cost-effective mitigation, negative emissions, greenhouse gas removal, methane removal
Popis: Methane is the second most important anthropogenic greenhouse gas (GHG) causing warming after carbon dioxide, and the emission reductions potentials are known to be limited due to the difficulty of abating agricultural methane. We explore in this study the emerging option of atmospheric methane removal (MR) that could complement carbon dioxide removal (CDR) in mitigation pathways. MR is technologically very challenging and potentially very expensive, so the main question is at which cost per ton of methane removed is MR more cost effective than CDR. To address this question, we use an intertemporal optimization climate-GHG-energy model to evaluate the MR cost and removal potential thresholds that would allow us to meet a given climate target with the same or a lower abatement cost and allowing for equal or higher gross CO2 emissions than if CDR through bioenergy with carbon capture and storage were an option. We also compare the effects of MR and CDR on the cost-effective mitigation pathways achieving four different climate targets. Using the ACC2-GET integrated carbon cycle, atmospheric chemistry, climate and energy system model, we consider a generic MR technology characterized by a given unit cost and a maximal removal potential. We show that to totally replace bioenergy based CDR with MR, the MR potential should reach at least 180-290 MtCH4 per year, i.e. between 50% and 90% of current anthropogenic methane emissions, with maximum unit cost between 11 000 and 69 000 $/tCH4, depending on the climate target. Finally, we found that replacing CDR by MR reshapes the intergenerational distribution of climate mitigation efforts by delaying further the mitigation burden.
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Přístupová URL adresa: https://research.chalmers.se/publication/545060
https://research.chalmers.se/publication/545066
https://research.chalmers.se/publication/545066/file/545066_Fulltext.pdf
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  Data: Potential and costs required for methane removal to compete with BECCS as a mitigation option
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Gaucher%2C+Yann%22">Gaucher, Yann</searchLink><br /><searchLink fieldCode="AR" term="%22Tanaka%2C+Katsumasa%22">Tanaka, Katsumasa</searchLink><br /><searchLink fieldCode="AR" term="%22Johansson%2C+Daniel%22">Johansson, Daniel</searchLink>, 1975<br /><searchLink fieldCode="AR" term="%22Boucher%2C+Olivier%22">Boucher, Olivier</searchLink><br /><searchLink fieldCode="AR" term="%22Ciais%2C+Philippe%22">Ciais, Philippe</searchLink>
– Name: TitleSource
  Label: Source
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  Data: <i>Environmental Research Letters Data for Potential and costs required for methane removal to compete with BECCS as a mitigation option</i>. 20(2)
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22greenhouse+gas+metrics%22">greenhouse gas metrics</searchLink><br /><searchLink fieldCode="DE" term="%22overshoot+scenarios%22">overshoot scenarios</searchLink><br /><searchLink fieldCode="DE" term="%22cost-effective+mitigation%22">cost-effective mitigation</searchLink><br /><searchLink fieldCode="DE" term="%22negative+emissions%22">negative emissions</searchLink><br /><searchLink fieldCode="DE" term="%22greenhouse+gas+removal%22">greenhouse gas removal</searchLink><br /><searchLink fieldCode="DE" term="%22methane+removal%22">methane removal</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: Methane is the second most important anthropogenic greenhouse gas (GHG) causing warming after carbon dioxide, and the emission reductions potentials are known to be limited due to the difficulty of abating agricultural methane. We explore in this study the emerging option of atmospheric methane removal (MR) that could complement carbon dioxide removal (CDR) in mitigation pathways. MR is technologically very challenging and potentially very expensive, so the main question is at which cost per ton of methane removed is MR more cost effective than CDR. To address this question, we use an intertemporal optimization climate-GHG-energy model to evaluate the MR cost and removal potential thresholds that would allow us to meet a given climate target with the same or a lower abatement cost and allowing for equal or higher gross CO2 emissions than if CDR through bioenergy with carbon capture and storage were an option. We also compare the effects of MR and CDR on the cost-effective mitigation pathways achieving four different climate targets. Using the ACC2-GET integrated carbon cycle, atmospheric chemistry, climate and energy system model, we consider a generic MR technology characterized by a given unit cost and a maximal removal potential. We show that to totally replace bioenergy based CDR with MR, the MR potential should reach at least 180-290 MtCH4 per year, i.e. between 50% and 90% of current anthropogenic methane emissions, with maximum unit cost between 11 000 and 69 000 $/tCH4, depending on the climate target. Finally, we found that replacing CDR by MR reshapes the intergenerational distribution of climate mitigation efforts by delaying further the mitigation burden.
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      – Type: doi
        Value: 10.1088/1748-9326/ada813
    Languages:
      – Text: English
    Subjects:
      – SubjectFull: greenhouse gas metrics
        Type: general
      – SubjectFull: overshoot scenarios
        Type: general
      – SubjectFull: cost-effective mitigation
        Type: general
      – SubjectFull: negative emissions
        Type: general
      – SubjectFull: greenhouse gas removal
        Type: general
      – SubjectFull: methane removal
        Type: general
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      – TitleFull: Potential and costs required for methane removal to compete with BECCS as a mitigation option
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            NameFull: Gaucher, Yann
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            NameFull: Tanaka, Katsumasa
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            NameFull: Johansson, Daniel
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            NameFull: Boucher, Olivier
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            NameFull: Ciais, Philippe
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              M: 01
              Type: published
              Y: 2025
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          Titles:
            – TitleFull: Environmental Research Letters Data for Potential and costs required for methane removal to compete with BECCS as a mitigation option
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