California Gov. Jerry Brown on Tuesday was named a special adviser for U.S. states ahead of the next United Nations meeting on implementing the Paris climate agreement.

Prime Minister of Fiji Frank Bainimarama named Brown the top representative for states and regions in the wake of President Trump's decision to withdraw from the climate deal.

"California is proud to partner with Fiji, an island nation that is experiencing firsthand the impacts of climate change and this year is the leader of the UN Conference of Parties," Brown said. "I look forward to taking the next step later this year with Gov. Kate Brown [of Oregon] and Gov. Jay Inslee [of Washington] when we join Prime Minister Bainimarama in Bonn to show that states and regions will fulfill the Paris commitment."

The 23rd session of the Conference of the Parties, or COP 23, is slated for November at the U.N. climate agency's headquarters in Bonn, Germany. Fiji will host the meeting.

Brown and Inslee attended Tuesday's ceremony, announcing that they too will attend COP 23 to represent states, or "subnational jurisdictions," committed to taking action to address climate change.

Brown and Inslee formed a coalition of states that committed themselves to meeting the goals of the Paris Agreement in response to Trump's June 1 decision to exit the climate deal.

Brown, who rose to prominence in the late 1970s as a politician, was nicknamed "Moonbeam" after Rolling Stone magazine found out his girlfriend at the time, singer Linda Ronstadt, used to call him that.