The role of urban areas within the climate system is yet another human climate effect whose role was minimized in the 2007 IPCC WG1 Report.
"Important New Paper on the Urban Effect of Temperature and Other Climate Metrics," Climate Science: Roger Pielke Sr. Research Group Weblog (2007-06-22) 
Climate forecasts (projections) decades into the future have not demonstrated skill in forecasting local, regional, and global climate variables.Roger A. Pielke
The claim by the IPCC that an imposed climate forcing (such as added atmospheric concentrations of CO2) can work through the parameterizations involved in the atmospheric, land, ocean and continental ice sheet components of the climate model to create skillful global and regional forecasts decades from now is a remarkable statement. That the IPCC states that this is a ‘much more easily solved problem than forecasting weather patterns just weeks from now’ is clearly a ridiculous scientific claim.Roger A. Pielke
The IPCC WG1 Chapter 3 Report clearly cherrypicked information on the robustness of the land near-surface air temperature to bolster their advocacy of a particular perspective on the role of humans within the climate system. As a result, policymakers and the public have been given a false (or at best an incomplete) assessment of the multi-decadal global average near-surface air temperature trends.Roger A. Pielke
Whether one agrees or not with Mr. Taylor (or the other climatologists whose voices are being stifled), this is an inappropriate politicalization of climate science to promote a particular view.Roger A. Pielke