Has Climate Change Promoted Urbanization in Sub-Saharan Africa?

January 2 2017

This paper documents strong but differentiated links between climate and urbanization in large panels of districts and cities in Sub-Saharan Africa, which has dried substantially in the past fifty years. The key dimension of heterogeneity is whether cities are likely to have manufacturing for export outside their regions, as opposed to being exclusively market towns providing local services to agricultural hinterlands. In regions where cities are likely to be manufacturing centers (25% of our sample), drier conditions increase urbanization and total urban incomes. There, urban migration provides an "escape" from negative agricultural moisture shocks. However, in the remaining market towns (75% of our sample), cities just service agriculture. Reduced farm incomes from negative shocks reduce demand for urban services and derived demand for urban labor. There, drying has little impact on urbanization or total urban incomes. Lack of structural transformation in Africa inhibits a better response to climate change. 

Journal of Development Economics, 2017, 124,  60-82

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Authors

Vernon Henderson joined the LSE in September 2013 as School Professor of Economic Geography, having previously been Eastman Professor of Political Economy at Brown University, USA.

Adam Storeygard is an Assistant Professor of Economics at Tufts University specializing in urban and development economics.

Uwe Deichmann is the Co-Director of the World Bank’s World Development Report 2016 “Digital Dividends” and a researcher in the Bank’s Development Research Group.