Well, not really.... just glance at a climate journal and you'll see that data comes from multiple sources, depending upon the study. You know that scientists actually spend months in places like the arctic and the oceans doing field work, and dont sit behind a screen all day, blogging at leisure in between waiting for NOAA to update their website, right? Thats not because its cool to do field work, its because its gathering primary data. And lets not forget... the 'existing data' is gathered, analyzed and interpreted by... climate scientists! Odd that none of them seem to be deniers, huh? It just so happens that the people who are closest to the data and understand it best are all in pretty universal agreement. Theres a reason for that, dude.
What most of these deniers do is critique existing studies, and they certainly seem to do it with a dedicated agenda.
I was surprised that you produced more than the one token article that Watts has published. And in Nature Climate Change! But of course, when I actually pulled it up, it was in the 'correspondence', not a peer reviewed paper. But then again, it makes your post look really good for those who dont actually care about, you know, truth.