Did Denier ‘Intimidation Tactics’ Move IPCC to ‘Lowball’ Sea Level Rise and Climate Sensitivity?

The New York Times has an article on how and why the Intergovernmental Panel on Climate Change “seems to be bending over backward to be scientifically conservative” in its forthcoming assessment.

The IPCC’s Fifth Assessment Report (AR5) is “an instantly out-of-date snapshot that lowballs future warming because it continues to ignore large parts of the recent literature and omit what it can’t model.”  For instance we have known for years that perhaps the single most important carbon-cycle feedback is the thawing of the northern permafrost.  The AR5's climate models completely ignore it, thereby lowballing likely warming this century.

Did Denier ‘Intimidation Tactics’ Move IPCC to ‘Lowball’ Sea Level Rise and Climate Sensitivity?