Syracuse

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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Arndt, Claudia | Hristov, Alexander | Price, William | Mcclelland, Shelby | Pelaez, Amalia | Cueva, Sergio | Oh, Joonpyo | Dijkstra, Jan | Bannink, André | Bayat, Ali | Crompton, Les | Eugène, Maguy | Enahoro, Dolapo | Kebreab, Ermias | Kreuzer, Michael | Mcgee, Mark | Martin, Cécile | Newbold, Charles | Reynolds, Christopher | Schwarm, Angela | Shingfield, Kevin | Veneman, Jolien | Yáñez-Ruiz, David | Yu, Zhongtang

Edité par CCSD ; National Academy of Sciences -

International audience. 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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