Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5 °C target by 2030 but not 2050 - Archive ouverte HAL Access content directly
Journal Articles Proceedings of the National Academy of Sciences of the United States of America Year : 2022

Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5 °C target by 2030 but not 2050

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Alexander Hristov
Joonpyo Oh
Ali Bayat
Les Crompton
Ermias Kebreab
Christopher Reynolds
Angela Schwarm
Zhongtang Yu

Abstract

Significance Agricultural methane emissions must be decreased by 11 to 30% of the 2010 level by 2030 and by 24 to 47% by 2050 to meet the 1.5 °C target. We identified three strategies to decrease product-based methane emissions while increasing animal productivity and five strategies to decrease absolute methane emissions without reducing animal productivity. Globally, 100% adoption of the most effective product-based and absolute methane emission mitigation strategy can meet the 1.5 °C target by 2030 but not 2050, because mitigation effects are offset by projected increases in methane. On a regional level, Europe but not Africa may be able to meet their contribution to the 1.5 °C target, highlighting the different challenges faced by high- and middle- and low-income countries.
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Dates and versions

hal-03900057 , version 1 (15-12-2022)

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Attribution - NonCommercial - NoDerivatives - CC BY 4.0

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Claudia Arndt, Alexander Hristov, William Price, Shelby Mcclelland, Amalia Pelaez, et al.. Full adoption of the most effective strategies to mitigate methane emissions by ruminants can help meet the 1.5 °C target by 2030 but not 2050. Proceedings of the National Academy of Sciences of the United States of America, 2022, 119 (20), ⟨10.1073/pnas.2111294119⟩. ⟨hal-03900057⟩

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