Open Thread #1
Posted by Jeff Id on January 12, 2010
Ok, tAV is probably long overdue for an open thread. Open means open for climate related discussion. Not that I clip anything, but intelligent people need space to have discussion.
Keep it civil and I’m looking forward to what we might learn.
An interesting topic is Diatribe Guy’s request for some help with a problem put forth far too often by the advocate crowd.
Jeff, not on topic, but you have quite a volume of posts, and I’d like your input. I’m going back and forth with a guy who stated the following:
“As you said, I rely on the opinions of those who know more than you and me. The National Academy of Sciences defenended Mann’s work (with some nuances) saying that any statistical flaws were immaterial to the shape of the curve.
Thus far, noone in the last 15 years or so has published a paleo-climate record that is materially different than Mann’s. Even with the absence of tree rings, the general shape still holds up.
I’m not saying McIntyre and McKitrick are incompetent, or haven’t provided any good insights. They have. And with their insights, you still get a hockey stick. To my knowledge noone from the skeptical community has published a reconstruction that differs materially from Mann’s work. The raw data is publicly available, and the data is more robust now than in 1998 when Mann did his original reconstruction.
Mann’s a smart guy. There’s good reason for skeptics to attack him, because he is a very important figure in the climate change discussion. He has over 80 publications, is a member of the National Academy of Sciences, and is one of the most highly cited climate scientists. He is obviously respected by his peers. It’s of little surprise that a person of his stature will be attacked, and there are many, many people who would love nothing more than to see him discredited. But, in the end, whether his work is discredited is judged by the scientific community, not by the wishful thinking of non-scientists.”
I know you did some great reconstruction work on Mann’s hockey stick. My guess is this guy will dismiss it out of hand sinceit’s not “published,” but nevertheless I want to direct him to the most relevant work on this topic.
Could you be so kind as to point me to the most pertinent posts you have on this that shows the problems with Mann’s approach?
Thanks in advance.