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Partial costs of global climate change adaptation for the supply of raw industrial and municipal water: a methodology and application
Despite growing recognition of the importance of climate change adaptation, few global estimates of the costs involved are available for the water supply sector. We present a methodology for estimating partial global and regional adaptation costs for raw industrial and domestic water supply, for alimited number of adaptation strategies, and apply the method using result soft climate models. In this paper, adaptation costs are defined as those for providing enough raw water to meet future industrial and municipal water demand, based on country level demand projections to 2050. We first estimate costs for a baseline scenario excluding climate change, and the additional climate change adaptation costs. Increased demand is assumed to be met through a combination of increased reservoir yield and alternative backstop measures.