I've noted that financial gain surely figured in the motivation of the scientists who appear to have conspired to suppress climate data. But of course there is also this possible motive, suggested in an historically grounded article by Rand Simberg that explores the ideal of and deviations from the objective pursuit of science:
It is easy to postulate that they have political aims, and there are certainly many “watermelon” environmentalists (green on the outside, “red” on the inside) who see the green movement as a new means to continue to push socialist and big-government agendas, after a momentary setback with the collapse of the Soviet Union two decades ago. But ... science doesn’t always follow the idealized model of the objective scientist seeking only truth; it is often driven by fashions and fads, peer pressure, and a lust for glory and respect by the other courtiers of the court that fund [these scientists] ... [perhaps] this defense of a flawed theory arose from the sense of power that it might give them over the rest of our lives. Or perhaps it was due to simply an emotional attachment to a theory in which they had invested their careers. Either way, what they did was not science, and they should be drummed out of that profession. They can no longer be trusted.