Steve Hayward has written probably the best piece on the CRUtape letters to date. For those who want to get up to speed, I can’t recommend it highly enough. Part of his conclusion:
The distinction between utterly politicized scientists such as Jones, Mann, and NASA’s James Hansen, and other more sober scientists has been lost on the media and climate campaigners for a long time now, and as a result, the CRUtape letters will cast a shadow on the entire field. There is no doubt plenty more of this kind of corruption in other hotbeds of climate science, but there are also a lot of unbiased scientists trying to do important and valuable work. Climate alarmists and their media cheerleaders are fond of warning about “tipping points” to disaster, but ironically this episode may represent a tipping point against the alarmists. The biggest hazard to serious climate science all along was not so much contrarian arguments from skeptics, but rather the damage that the hyperbole of the environmental community would inflict on their own cause.