Global Water Resources: Vulnerability from Climate Change and Population Growth

Author:

Vörösmarty Charles J.1234,Green Pamela123,Salisbury Joseph153,Lammers Richard B.123

Affiliation:

1. Water Systems Analysis Group,

2. Complex Systems Research Center,

3. Institute for the Study of Earth, Oceans, and Space,

4. Earth Sciences Department, University of New Hampshire, Durham, NH 03824, USA.

5. Ocean Processes Analytical Laboratory,

Abstract

The future adequacy of freshwater resources is difficult to assess, owing to a complex and rapidly changing geography of water supply and use. Numerical experiments combining climate model outputs, water budgets, and socioeconomic information along digitized river networks demonstrate that (i) a large proportion of the world's population is currently experiencing water stress and (ii) rising water demands greatly outweigh greenhouse warming in defining the state of global water systems to 2025. Consideration of direct human impacts on global water supply remains a poorly articulated but potentially important facet of the larger global change question.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference37 articles.

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2. Z. Kaczmarek et al. in Climate Change 1995: Impacts Adaptations and Mitigation of Climate Change R. T. Watson et al. Eds. (Cambridge Univ. Press Cambridge 1996) pp. 469–486.

3. Falkenmark M., Water Int. 16, 229 (1991).

4. M. I. L'vovich and G. F. White in The Earth as Transformed by Human Action B. L. Turner et al. Eds. (Cambridge Univ. Press Cambridge 1990) pp. 235–252.

5. I. Shiklomanov Ed. Assessment of Water Resources and Water Availability in the World: Scientific and Technical Report (State Hydrological Institute St. Petersburg Russia 1996).

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