AFAIK, there are plenty of scientists who are politically aligned with the GOP in their private lives who agree with the scientific consensus on anthropogenic global warming; it's not like every single scientist is a liberal. Yet every time i see some opinion in a well-respected publication like you linked, it is by someone who is directly involved with some conservative thinktank or would otherwise be expected to express they opinion they do since they work for Exxon or whatever. His argument essentially that the error of measurements is too large to have any validity in whatever standard models of climatology there are so therefore the predictions aren't valid or should be revised. That is a simple argument to make on any scientific experiment and not enough for me unfortunately. YOu are going to have to bring more to convince me that we have no effect on global warming, but that's just me.