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  Comparing impacts of climate change and mitigation on global agriculture by 2050

Meijl, H. v., Havlik, P., Lotze-Campen, H., Stehfest, E., Witzke, P., Perez-Dominguez, I., Bodirsky, B. L., Dijk, M. v., Doelman, J., Fellmann, T., Humpenöder, F., Koopman, J. F. L., Müller, C., Popp, A., Tabeau, A., Valin, H., Zeist, W.-J.-v. (2018): Comparing impacts of climate change and mitigation on global agriculture by 2050. - Environmental Research Letters, 13, 6, 064021.
https://doi.org/10.1088/1748-9326/aabdc4

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 Creators:
Meijl, H. van1, Author
Havlik, P.1, Author
Lotze-Campen, Hermann2, Author              
Stehfest, E.1, Author
Witzke, P.1, Author
Perez-Dominguez, I.1, Author
Bodirsky, Benjamin Leon2, Author              
Dijk, M. van1, Author
Doelman, J.1, Author
Fellmann, T.1, Author
Humpenöder, Florian2, Author              
Koopman, J. F. L.1, Author
Müller, Christoph2, Author              
Popp, Alexander2, Author              
Tabeau, A.1, Author
Valin, H.1, Author
Zeist, W.-J. van1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: Systematic model inter-comparison helps to narrow discrepancies in the analysis of the future impact of climate change on agricultural production. This paper presents a set of alternative scenarios by five global climate and agro-economic models. Covering integrated assessment (IMAGE), partial equilibrium (CAPRI, GLOBIOM, MAgPIE) and computable general equilibrium (MAGNET) models ensures a good coverage of biophysical and economic agricultural features. These models are harmonized with respect to basic model drivers, to assess the range of potential impacts of climate change on the agricultural sector by 2050. Moreover, they quantify the economic consequences of stringent global emission mitigation efforts, such as non-CO2 emission taxes and land-based mitigation options, to stabilize global warming at 2 °C by the end of the century under different Shared Socioeconomic Pathways. A key contribution of the paper is a vis-à-vis comparison of climate change impacts relative to the impact of mitigation measures. In addition, our scenario design allows assessing the impact of the residual climate change on the mitigation challenge. From a global perspective, the impact of climate change on agricultural production by mid-century is negative but small. A larger negative effect on agricultural production, most pronounced for ruminant meat production, is observed when emission mitigation measures compliant with a 2 °C target are put in place. Our results indicate that a mitigation strategy that embeds residual climate change effects (RCP2.6) has a negative impact on global agricultural production relative to a no-mitigation strategy with stronger climate impacts (RCP6.0). However, this is partially due to the limited impact of the climate change scenarios by 2050. The magnitude of price changes is different amongst models due to methodological differences. Further research to achieve a better harmonization is needed, especially regarding endogenous food and feed demand, including substitution across individual commodities, and endogenous technological change.

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 Dates: 2018
 Publication Status: Finally published
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1088/1748-9326/aabdc4
PIKDOMAIN: Climate Impacts & Vulnerabilities - Research Domain II
PIKDOMAIN: Sustainable Solutions - Research Domain III
eDoc: 8092
Research topic keyword: Adaptation
Research topic keyword: Climate impacts
Research topic keyword: Food & Agriculture
Research topic keyword: Mitigation
Research topic keyword: Land use
Model / method: Model Intercomparison
Model / method: MAgPIE
Model / method: LPJmL
Regional keyword: Global
Organisational keyword: RD2 - Climate Resilience
Organisational keyword: RD3 - Transformation Pathways
Working Group: Land Use and Resilience
Working Group: Land-Use Management
 Degree: -

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Title: Environmental Research Letters
Source Genre: Journal, SCI, Scopus, p3, oa
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Pages: - Volume / Issue: 13 (6) Sequence Number: 064021 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/150326