The global climate model used by the Met Office still needs to be refined. While it tracks past temperature changes pretty closely, it does not accurately backcast the drought patterns in every region. But it correctly reproduces the total global water trends over the past 50 years. When the same model is used to forecast the pattern over the 21st Century, it uncovers “a net overall global drying trend” if greenhouse gas emissions are moderate or high. “On a global basis, drought events are slightly more frequent and of much longer duration by the second half of the 21st century relative to the present day.”(3) In these dry, stodgy phrases, we find an account of almost unimaginable future misery.
Monbiot.com � The Water Boom Is Over: Filed in: climate, CO2, emissions, biosphere, Monbiot, water
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