come on mac, i know you're smarter than this. the reference is not mine, it's a quote from one of 3 articles that are included as rebuttal to the very specific OISM petition you cited. as far as cook...that was not a survey of scientist, but an accounting of published articles (the one, i believe, that led to the oversimplified pie chart):
"We find that 66.4% of abstracts expressed no position on AGW, 32.6% endorsed AGW, 0.7% rejected AGW and 0.3% were uncertain about the cause of global warming. Among abstracts expressing a position on AGW, 97.1% endorsed the consensus position that humans are causing global warming."
Quantifying the consensus on anthropogenic global warming in the scientific literature - IOPscience
i don't have time to evaluate and critique the position of the authors of the 0.7% that reject AGW; perhaps you can provide some input.