Timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatement

Reducing carbon dioxide (CO _2 ) emissions through a reliance on natural gas can create a hidden commitment to methane (CH _4 ) leakage mitigation. While the quantity of CH _4 leakage from natural gas has been studied extensively, the magnitude and timing of the CH _4 mitigation required to meet cli...

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Main Authors: Magdalena M Klemun, Jessika E Trancik
Format: Article
Language:English
Published: IOP Publishing 2019-01-01
Series:Environmental Research Letters
Subjects:
Online Access:https://doi.org/10.1088/1748-9326/ab2577
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author Magdalena M Klemun
Jessika E Trancik
author_facet Magdalena M Klemun
Jessika E Trancik
author_sort Magdalena M Klemun
collection DOAJ
description Reducing carbon dioxide (CO _2 ) emissions through a reliance on natural gas can create a hidden commitment to methane (CH _4 ) leakage mitigation. While the quantity of CH _4 leakage from natural gas has been studied extensively, the magnitude and timing of the CH _4 mitigation required to meet climate policy goals is less well understood. Here we address this topic by examining the case of US electricity under a range of baseline natural gas leakage rate estimates and emissions equivalency metrics for converting CH _4 to CO _2 -equivalent emissions. We find that CH _4 emissions from the power sector would need to be reduced by 30%–90% from today’s levels by 2030 in order to meet a CO _2 -equivalent climate policy target while continuing to rely on natural gas. These CH _4 emissions reductions are greater than the required CO _2 reductions under the same policy. Alternatively, expanding carbon-free sources more rapidly could meet the 2030 target without reductions in natural gas leakage rates. The results provide insight on an important policy choice in regions and sectors using natural gas, between emphasizing a natural gas supply chain clean-up effort or an accelerated transition toward carbon-free energy sources.
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spelling doaj.art-2e0ea95058154e7bba96854038f61fb02023-08-09T14:44:04ZengIOP PublishingEnvironmental Research Letters1748-93262019-01-01141212406910.1088/1748-9326/ab2577Timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatementMagdalena M Klemun0https://orcid.org/0000-0001-6021-0753Jessika E Trancik1https://orcid.org/0000-0001-6305-2105Institute for Data, Systems, and Society, Massachusetts Institute of Technology, United States of AmericaInstitute for Data, Systems, and Society, Massachusetts Institute of Technology, United States of America; Santa Fe Institute, United States of AmericaReducing carbon dioxide (CO _2 ) emissions through a reliance on natural gas can create a hidden commitment to methane (CH _4 ) leakage mitigation. While the quantity of CH _4 leakage from natural gas has been studied extensively, the magnitude and timing of the CH _4 mitigation required to meet climate policy goals is less well understood. Here we address this topic by examining the case of US electricity under a range of baseline natural gas leakage rate estimates and emissions equivalency metrics for converting CH _4 to CO _2 -equivalent emissions. We find that CH _4 emissions from the power sector would need to be reduced by 30%–90% from today’s levels by 2030 in order to meet a CO _2 -equivalent climate policy target while continuing to rely on natural gas. These CH _4 emissions reductions are greater than the required CO _2 reductions under the same policy. Alternatively, expanding carbon-free sources more rapidly could meet the 2030 target without reductions in natural gas leakage rates. The results provide insight on an important policy choice in regions and sectors using natural gas, between emphasizing a natural gas supply chain clean-up effort or an accelerated transition toward carbon-free energy sources.https://doi.org/10.1088/1748-9326/ab2577climate policynatural gasmethane leakagegreenhouse gasesfugitive emissionsemissions equivalency metric
spellingShingle Magdalena M Klemun
Jessika E Trancik
Timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatement
Environmental Research Letters
climate policy
natural gas
methane leakage
greenhouse gases
fugitive emissions
emissions equivalency metric
title Timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatement
title_full Timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatement
title_fullStr Timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatement
title_full_unstemmed Timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatement
title_short Timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatement
title_sort timelines for mitigating the methane impacts of using natural gas for carbon dioxide abatement
topic climate policy
natural gas
methane leakage
greenhouse gases
fugitive emissions
emissions equivalency metric
url https://doi.org/10.1088/1748-9326/ab2577
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