The Impacts of Climate Change on Surface and Ground Water Withdrawal: A New Global Data Base of Costs and Returns of Irrigation Part I: Background, Method, and Data

Iman Haqiqi and Marziyeh Bahalou Horeh

No 332975, Conference papers from Purdue University, Center for Global Trade Analysis, Global Trade Analysis Project

Abstract: This study introduces an improved global economic framework for investigating the impacts of climate change while focusing on local water constraints and international trade of agricultural products. This study measures the likely impacts of a counterfactual change in “irrigation yield gap” on irrigation expansion, groundwater withdrawal, surface water withdrawal, and international trade of agricultural commodities. We construct proposed economic framework based on GTAP (Global Trade Analysis Project) model, a widely used global model, to investigate various economic impacts. We extend GTAP Water Data Base (Haqiqi et al., 2016) by adding new global database on irrigation efficiency; introducing irrigation services as sectors; new global database of costs and returns of irrigation; introducing energy, capital, and labor inputs for water extraction and on-farm water distribution; distinguishing surface water from groundwater; and considering different irrigation technologies. We also introduce demand and supply of irrigation services by river basin AEZs (agro-ecological zones). Then, we calculate the likely impact of a counterfactual scenario of climate change (change in relative yields of irrigated and non-irrigated crops).

Keywords: Environmental Economics and Policy; Resource/Energy Economics and Policy (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:ags:pugtwp:332975

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