Marco Rubio is the latest Republican to join the Senate's bipartisan climate change caucus, the Washington Examiner has exclusively learned.

Rubio's office confirmed he has become a member of the Senate Climate Solutions Caucus, adding conservative heft to the first such bipartisan forum for senators to talk about climate policy. The Florida senator follows the additions of other Republican senators such as Lisa Murkowski of Alaska, Mitt Romney of Utah, and Lindsey Graham of South Carolina.

Republican Sen. Mike Braun of Indiana co-founded the caucus last month with Democratic Sen. Chris Coons of Delaware. The group's formation comes as some Republican lawmakers are becoming more engaged in climate policy discussions and polls show voters paying more attention to the issue.

Rubio represents a state vulnerable to sea level rise, but he has traditionally not distinguished himself as a supporter of federal government action to combat climate change.

“It's fantastic to see Sen. Rubio jump on the climate caucus and engaging on these issues in a state where climate change is impacting everything from small business to local economies,” said Andres Jimenez, senior director of government affairs at the Citizens Climate Lobby. “When we see he is listening to his constituents and grassroots organizations, it shows we are moving members in the right direction.”

In a previous interview with the Washington Examiner, Rubio acknowledged the impact of climate change on Florida.

"People can have a debate about what we can do about climate change and the causes, but the bottom line is that the rising of sea levels is immeasurable in Florida," he said. "So, if you represent South Florida or live in South Florida, it's really not something you can ignore."