This guy has a lot of gall to end with that after making such flimsy allegations of fraud against an entire academic discipline. His hyperbolic screeching about the "flood of money" would better be directed at the oil industry.
That's not to say the climate change crowd is without its biases, but if he honestly thinks that they are intentionally committing fraud for love of money and prestige, he is deluded.
Personally, I think that the people he slanders are acting honestly, but I might present a more modest hypothesis:
The people who do research on the climate and on the environment have a dramatic love of forests and lakes and natural, untouched wilderness. Anyone who stands in the midst of the mountains cannot help but see why this is. These people might even be willing to lie to protect them. Money, I assure you, has nothing to do with it. But unfailing love of the natural world? Sure, there are people who would lie without hesitation to protect that. But money? Money has very little importance to people who advocate for reductions in fossil fuels, and I think Hal Lewis' focus on money shows how little he understands the people he maligns.
I don't include myself among them because I am no such researcher, but I share their values, their love of the wild things. Lewis, I'm not entirely sure what he loves. I find it difficult to believe he's really interested in science. I can't believe a rationalist would look at any of the evidence available and be so convinced of fraud.