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Journal Article

Risk of increased food insecurity under stringent global climate change mitigation policy

Authors

Hasegawa,  T.
External Organizations;

Fujimori,  S.
External Organizations;

Havlik,  P.
External Organizations;

Valin,  H.
External Organizations;

/persons/resource/Bodirsky

Bodirsky,  Benjamin Leon
Potsdam Institute for Climate Impact Research;

Doelman,  J. C.
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Fellmann,  T.
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Kyle,  P.
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Koopman,  J. F. L.
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/persons/resource/Lotze-Campen

Lotze-Campen,  Hermann
Potsdam Institute for Climate Impact Research;

Mason D'Croz,  D.
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Ochi,  Y.
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Perez Dominguez,  I.
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Stehfest,  E.
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Sulser,  T. B.
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Tabeau,  A.
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Takahashi,  K.
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Takakura,  J.
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van Mejl,  H.
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Zeist,  W.-J. van
External Organizations;

Wiebe,  K.
External Organizations;

Witzke,  P.
External Organizations;

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Fulltext (public)

22575oa.pdf
(Postprint), 2MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Hasegawa, T., Fujimori, S., Havlik, P., Valin, H., Bodirsky, B. L., Doelman, J. C., Fellmann, T., Kyle, P., Koopman, J. F. L., Lotze-Campen, H., Mason D'Croz, D., Ochi, Y., Perez Dominguez, I., Stehfest, E., Sulser, T. B., Tabeau, A., Takahashi, K., Takakura, J., van Mejl, H., Zeist, W.-J.-v., Wiebe, K., Witzke, P. (2018): Risk of increased food insecurity under stringent global climate change mitigation policy. - Nature Climate Change, 8, 8, 699-703.
https://doi.org/10.1038/s41558-018-0230-x


Cite as: https://publications.pik-potsdam.de/pubman/item/item_22575
Abstract
Food insecurity can be directly exacerbated by climate change due to crop-production-related impacts of warmer and drier conditions that are expected in important agricultural regions1,2,3. However, efforts to mitigate climate change through comprehensive, economy-wide GHG emissions reductions may also negatively affect food security, due to indirect impacts on prices and supplies of key agricultural commodities4,5,6. Here we conduct a multiple model assessment on the combined effects of climate change and climate mitigation efforts on agricultural commodity prices, dietary energy availability and the population at risk of hunger. A robust finding is that by 2050, stringent climate mitigation policy, if implemented evenly across all sectors and regions, would have a greater negative impact on global hunger and food consumption than the direct impacts of climate change. The negative impacts would be most prevalent in vulnerable, low-income regions such as sub-Saharan Africa and South Asia, where food security problems are already acute.