The 2011 Interim Report from the Nongovernmental International Panel on Climate Change presents an overview of the research on climate change that has appeared since publication of Climate Change Reconsidered: The 2009 Report of the Nongovernmental International Panel on Climate Change.
Available on line.
Key findings, as outlined in the interim report’s executive summary, include:
“We find evidence that the models over-estimate the amount of warming that occurred during the twentieth century and fail to incorporate chemical and biological processes that may be as important as the physical processes employed in the models.”
“More CO2 promotes more plant growth both on land and throughout the surface waters of the world’s oceans, and this vast assemblage of plant life has the ability to affect Earth’s climate in several ways, almost all of them tending to counteract the heating effects of CO2’s thermal radiative forcing.”
“The latest research on paleoclimatology and recent temperatures [finds] new evidence that the Medieval Warm Period of approximately 1,000 years ago, when there was about 28 percent less CO2 in the atmosphere than there is currently, was both global and warmer than today’s world.”
“New research finds less melting of ice in the Arctic, Antarctic, and on mountaintops than previously feared, no sign of acceleration of sea-level rise in recent decades, no trend over the past 50 years in changes to the Atlantic meridional overturning circulation (MOC), and no changes in precipitation patterns or river flows that could be attributed to rising
“Amphibians, birds, butterflies, other insects, lizards, mammals, and even worms benefit from global warming and its myriad ecological effects.”
“Rising temperatures and atmospheric CO2 concentrations, by increasing crop yields, will play a major role in averting hunger and ecological destruction in the future.”
“The latest research suggests corals and other forms of aquatic life have effective adaptive responses to climate change enabling them to flourish despite or even because of climate change.”
“Global warming is more likely to improve rather than harm human health because rising temperatures lead to a greater reduction in winter deaths than the increase they cause in summer deaths.”
“Even in worst-case scenarios, mankind will be much better off in the year 2100 than it is today, and therefore able to adapt to whatever challenges climate change presents.”