California Gov. Jerry Brown (D) said Sunday that President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE is "very convinced" of his position that climate change is not a significant issue.

Brown said on NBC's "Meet the Press" that while he appreciated that Trump came to California in November to tour damage caused by massive wildfires, he did not feel the aftermath of the disaster swayed the president's views.

"I would say, he is very convinced of his position," Brown said. "And his position is that there's nothing abnormal about the fires in California or the rising sea level or all the other incidents of climate change.”

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Brown, who will leave the governor's mansion in January because of term limits, has been an outspoken advocate for policies that combat climate change.

He acknowledged Sunday that he does not feel California has done enough to curb climate change, despite signing off on a number of pro-environmental policies.

"The technology, the investment, the lifestyle changes, the land use changes, this is a revolutionary threat," he said. "And we've got to get off this idea, it's the economy, stupid. No, it's the environment. It's the ecology that we have to get on the side of. And we only do that with wisdom, with investment, and widespread collaboration and working together."

Trump has consistently downplayed the threat of climate change, and has continued to do so after his administration released a report last month warning of dire consequences due to global warming.

The report was developed by multiple federal agencies. A version of it is mandated to be released every four years under the National Climate Assessment from the multiagency Global Change Research Program.

Trump responded to the report by telling reporters that he doesn't "believe" its warnings about the economic impacts of climate change. The White House also brushed aside the report's findings, claiming it's "not based on facts."