Evaluating Sustainability of Projected Water Demands Under Future_Climate Change Scenarios_40pg

Evaluating Sustainability of Projected Water Demands Under Future Climate Change Scenarios

Figure 16. (a) Projected total water withdrawal as percent of available precipitation in 2050. 2050 values are based on an ensemble of 16 GCMs and represent conditions between 2040 and 2059. (b) Projected total freshwater withdrawal in 2050 as percent of historical (1934-2000) total available precipitation.

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Evaluating Sustainability of Projected Water Demands Under Future_Climate Change Scenarios_40pg

Published on Sep 22, 2010

Giancarlo Colombo

About

Climate change will impact water supplies, exacerbating existing pressures on water resources caused by population and economic growth. Given the combination of these stressors, the sustainability of water resources in future decades is a concern in many parts of the world. This study presents an integration of water withdrawal projections and future estimates of renewable water supply across the United States to assess future water availability in the face of a changing climate. The water demand projections in this work are based on business-as-usual trends in growth, particularly of population and energy demand, and renewable water supply projections are based on the average results of an ensemble of sixteen established climate models.

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