The information is already available in their website for consultation and that allowed me to get this info from the Working Group I Report "The Physical Science Basis" - (Section 9 - Understanding and Attributing Climate Change):
Executive SummaryMore about this when the news agencies start reporting it. :)
Evidence of the effect of external influences on the climate system has continued to accumulate since the Third Assessment Report (TAR). The evidence now available is substantially stronger and is based on analyses of widespread temperature increases throughout the climate system and changes in other climate variables.
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Human-induced warming of the climate system is widespread.
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It is likely that there has been a substantial anthropogenic contribution to surface temperature increases in every continent except Antarctica since the middle of the 20th century.
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Surface temperature extremes have likely been affected by anthropogenic forcing.
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There is evidence of anthropogenic influence in other parts of the climate system.
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Analyses of palaeoclimate data have increased confidence in the role of external influences on climate.
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Overall consistency of evidence. Many observed changes in surface and free atmospheric temperature, ocean temperature and sea ice extent, and some large-scale changes in the atmospheric circulation over the 20th century are distinct from internal variability and consistent with the expected response to anthropogenic forcing.
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Remaining uncertainties. Further improvements in models and analysis techniques have led to increased confidence in the understanding of the infl uence of external forcing on climate since the TAR. However, estimates of some radiative forcings remain uncertain, including aerosol forcing and inter-decadal variations in solar forcing.
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