Economywide impacts of climate change on agriculture in Sub-Saharan Africa

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dc.creatorCalzadilla, Alvaro
dc.creatorZhu, Tingju
dc.creatorRehdanz, Katrin
dc.creatorTol, Richard S.J.
dc.creatorRingler, Claudia
dc.date2009
dc.date2024-11-21T09:58:51Z
dc.date2024-11-21T09:58:51Z
dc.date.accessioned2026-06-27T15:13:17Z
dc.descriptionTwo possible adaptation options to climate change for Sub-Saharan Africa are analyzed under the SRES B2 scenario. The first scenario doubles the irrigated area in Sub-Saharan Africa by 2050, compared to the baseline, but keeps total crop area constant. The second scenario increases both rainfed and irrigated crop yields by 25 percent for all Sub-Saharan African countries. The two adaptation scenarios are analyzed with IMPACT, a partial equilibrium agricultural sector model combined with a water simulation module, and with GTAP-W, a general equilibrium model including water resources. The methodology combines the advantages of a partial equilibrium approach, which considers detailed water-agriculture linkages, with a general equilibrium approach, which takes into account linkages between agriculture and nonagricultural sectors and includes a full treatment of factor markets. The efficacy of the two scenarios as adaptation measures to cope with climate change is discussed. Due to the limited initial irrigated area in the region, an increase in agricultural productivity achieves better outcomes than an expansion of irrigated area. Even though Sub-Saharan Africa is not a key contributor to global food production or irrigated food production, both scenarios help lower world food prices, stimulating national and international food markets.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/161856
dc.identifier.urihttp://hdl.handle.net/123456789/98075
dc.languageen
dc.publisherInternational Food Policy Research Institute
dc.rightsOpen Access
dc.sourceCalzadilla, Alvaro; Zhu, Tingju; Rehdanz, Katrin; Tol, Richard S.J.; Ringler, Claudia. 2009. Economywide impacts of climate change on agriculture in Sub-Saharan Africa. IFPRI Discussion Paper 873. https://hdl.handle.net/10568/161856
dc.subjectcomputable general equilibrium models
dc.subjectclimate change
dc.subjectagriculture
dc.subjectassessment
dc.titleEconomywide impacts of climate change on agriculture in Sub-Saharan Africa
dc.typeWorking Paper

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Instituto Internacional de Investigación sobre Políticas Alimentarias (IFPRI)