Minister in the Presidency for National Planning Trevor Manuel will serve on a high-level United Nations (UN) Advisory Group on Climate Change Financing.
In a statement on Tuesday, his ministry said that the group of 19 experts would be co-chaired by UK Prime Minister Gordon Brown and Ethiopian Prime Minister Meles Zenawi.
The group, launched in February, is tasked with getting finance to help developing countries to combat climate change.
"The group is tasked with creating practical proposals to boost both short and long-term financing for mitigation and adaptation strategies in developing countries."
The group consists of high-level officials from ministries and banks, as well as experts on public finance and development.
It includes President Bharrat Jagde of Guyana and Norway Prime Minister Jens Stoltenberg.
The group meets in London for its first session on March 29.
It is expected to present its initial outputs before the UN Framework Convention on Climate Change during a "full negotiating session" in New York in May.