JR Christy? Surely you could pick an actual contrarian and not an idiot?
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However, once he sows the seeds of doubt into the minds of his audience, Dr. Christy proceeds to argue, similar to Dr. Lindzen, that recent warming could simply be due to the internal variability of the global climate. Dr. Christy argues that this is a plausible alternative explanation to man-made global warming because "we", as he puts it, are finding that the climate is not sensitive to greenhouse gases, and he claims that observational data is not consistent with climate model predictions. Thus, Dr. Christy concludes, reducing greenhouse gas emissions will have little impact on the climate.
As you can see, this is a very similar alternative hypothesis to that put forth by Dr. Lindzen. In fact, when Dr. Christy says "we" are finding that the climate is insensitive to greenhouse gases, he refers exclusively to studies by Dr. Lindzen and Dr. Spencer. Virtually all other climate science research has found that the climate is indeed quite sensitive to greenhouse gases, and the work of Dr. Lindzen and Dr. Spencer concluding otherwise contains numerous errors. And as with Dr. Lindzen's alternative hypothesis, every single one of Dr. Christy's arguments is directly contradicted by the observational data (as illustrated in the links above).
Thus unfortunately we once again find that even the arguments by climate scientist "skeptics" that we need not worry about global warming or greenhouse gas emissions are scientifically unsound. There's an important distinction to be made here: human-caused global warming is a robust scientific theory which is supported by a vast body of evidence and has withstood extreme scientific scrutiny for many decades. The alternative hypotheses like that of Dr. Christy, on the other hand, have quickly been falsified by ongoing scientific research.
Additionally, another critical point which Dr. Christy neglects is that even aside from climate change, our carbon emissions are also causing ocean acidification (another major environmental problem which we refer to as "global warming's evil twin"), and there are numerous other issues with our continued reliance on fossil fuels (i.e. peak oil, air pollution, reliance on foreign energy sources, etc.). It's unfortunate that Dr. Christy and his two "skeptic" colleagues continue to present this misleading and scientifically unsound information to the general public and policymakers, because the more we listen to them and the longer we wait, the worse the consequences will be.
www.skepticalscience.com/examining-christys-skepticism.html