Emissions from food system alone will drive the world past target, unless high-methane foods are tackled
, but the new study provides estimates of the temperature rises their emissions could cause. These could be a significant underestimate, however, as the study assumed animal product consumption would remain level in the future but it was projected to rise by 70% by 2050.
“We have to make the goal of sustaining our global population consistent with a climate-safe future,” she said. “As we had already reached more than 1C warming above pre-industrial levels by 2021, this additional warming [from food production] alone is enough to surpass the 1.5C global warming target,” the scientists concluded. “Our analysis clearly demonstrates that current dietary production and consumption patterns are incompatible with sustaining a growing population while pursuing a secure climate future.
Cutting methane emissions from cattle using feed additives and better management of manure could avoid another 0.2C, the researchers said, while switching to green energy in the food system would cut 0.15C. Ivanovich said the emissions reductions options included in the study were those possible today but that future technological advances might be able to reduce emissions further.
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