The green climate fund was set up last year at the UN climate change conference. It's to become operational by 2020, but they have not yet identified the sources of revenue for it. It's to have at least $100 billion to help poor countries cope with climate change. But there is an interim fund that Canada has pledged to be part of called the fast-start financing, to which Canada contributed $400 million last year.
On October 19th, 2011. See this statement in context.