IPCC Fifth Assessment Report - Other

Other

It is assumed that the 'Next Generation Earth System Models' (e.g. HadGEM2) will produce hundreds of terabytes to perhaps tens of petabytes of climate model data for analysis.

Climate model simulations in support of AR5 will use a different approach to account for increasing greenhouse gas concentrations than in the previous report. Instead of the scenarios from the Special Report on Emissions Scenarios the models are performing simulations for various Representative Concentration Pathways.

After some flaws and errors were found in the IPCC AR4 in 2009, the U.N. decided to create a science panel to review "how the IPCC operates".

After the WG1 report draft was leaked in December 2012, climate sceptics have identified one section of the draft as suggesting that cosmic rays have a greater influence on warming than had previously been claimed. However, Professor Steve Sherwood, the lead author of the chapter in question, said the idea that the chapter suggests a greater role for solar and other cosmic rays in global warming is ridiculous. "We conclude exactly the opposite—that this cosmic ray effect that the paragraph is discussing appears to be negligible," he said. The New York Times Andrew Revkin though criticized the IPCCs review process as providing "fresh evidence that the organization’s policies and procedures are a terrible fit for an era in which transparency will increasingly be enforced on organizations working on consequential energy and environmental issues."