IPCC releases full assessment report on climate risks and disasters.

IPCC: “Evidence suggests that climate change has led to changes in climate extremes such as heat waves, record high temperatures and, in many regions, heavy precipitation in the past half century, the Intergovernmental Panel on Climate Change said today …..in its Special Report on Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation (SREX). ….“The main message from the report is that we know enough to make good decisions about managing the risks of climate-related disasters. Sometimes we take advantage of this knowledge, but many times we do not,” said Chris Field, Co-Chair of IPCC’s Working Group II, which together with Working Group I produced the report.” The IPCC released the Summary for Policymakers (SPM) of the report in November 2011. …The SREX has assessed a wealth of new studies, and new global and regional modelling results that were not available at the time of the Fourth Assessment Report in 2007, its last major assessment of climate change science. Some important conclusions delivered by the SREX therefore include: – Medium confidence in an observed increase in the length or number of warm spells or heat waves in many regions of the globe.  – Likely increase in frequency of heavy precipitation events or increase in proportion of total rainfall from heavy falls over many areas of the globe, in particular in the high latitudes and tropical regions, and in winter in the northern mid-latitudes. – Medium confidence in projected increase in duration and intensity of droughts in some regions of the world, including southern Europe and the Mediterranean region, central Europe, central North America, Central America and Mexico, northeast Brazil, and southern Africa.”
JL thought: “Improving as the global circulation models are, if we wait for all models in all national centres of climate research to agree, we will already be living in a 6 degree world.”