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Nature 416, 690-691 (18 April 2002) | doi:10.1038/416690a

Climate change: The 20-year forecast

Francis W. Zwiers

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Policy-makers need short-term climate predictions to develop strategies for coping with climate change over the typical two-decade planning horizon. Two new studies increase our confidence in these predictions.

Earth's climate has changed during the past century1, 2. The global mean temperature has risen by 0.