Cooling Effect of Irrigation About to Evaporate

Environment News Service, August, 2007 by staff

LIVERMORE, California (ENS) — --> Expansion of irrigation has in the past masked global warming in California’s Central Valley, but irrigation will not make much of a difference in the future, new research reveals.

"Throughout the major irrigated regions of the world, the cooling influence of irrigation on daytime maximum temperatures will be much smaller in the next 50 years than in the past century, and will likely not continue to curb the effects of greenhouse warming any more," said Celine Bonfils, lead author of the study from Lawrence Livermore National Laboratory and University of California-Merced.

The research team, which includes Bonfils and David Lobell at Livermore Lab, first studied the net impact of widespread irrigation on local and regional...

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