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Climate Change 2013: The Physical Science Basis Summary for Policymakers published
September 27, 2013
Climate Change 2013: The Physical Science Basis Summary for Policymakers published
The report says warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia. The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, sea level has risen, and the concentrations of greenhouse gases have increased.
The report is available from the IPCC web site.
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