Christiana Figueres, who received international acclaim as one of the chief architects of the global agreement on climate change adopted last year in Paris and signed three months ago at the United Nations, has joined the long list of candidates running for the next UN Secretary General.

Figueres, who served as the UN’s climate chief since 2010, stepped down from her post on July 1. She is succeeded by Patricia Espinosa, Mexico’s former ambassador to Germany.

With her announcement, Figueres joins a long list of candidates running to replace current Secretary-General Ban Ki-moon of South Korea. The list includes Helen Clark, former prime minister of New Zealand and head of the UN Development Programme; Antióno Guterres, former president of Portugal and former UN refugee chief; and Croatia’s former foreign minister, Vesna Pusić, The Guardian reports.

Figueres has been lauded around the world for her decades of dedication to climate action, as well as her ability to bring warring factions together, with “calm, good humor and occasional flashes of anger,” The Guardian notes.

She was nominated on Thursday afternoon by the president of her home country of Costa Rica, Luis Guillermo Solís.