Support for climate change measures

The leaders agreed their future actions will support sustainable development, economic growth and certainty for business and investment. Photo / AP

G20 nations have backed moves on climate change in the wake of the Brisbane leaders' summit.

"We support strong and effective action to address climate change," the official communique released last night said.

Image 1 of 14: US president Barack Obama, centre, with European leaders discussing transatlantic trade and the situation in Ukraine. Photo / AP

Climate change wasn't on the formal agenda prepared by the Australians, but supportive statements by US President Barack Obama this weekend ensured its inclusion in the final statement.

The leaders agreed that their future actions will support sustainable development, economic growth and certainty for business and investment.

The G20 will work together to adopt a protocol under the United Nations Framework Convention on Climate Change to present at the Paris climate conference in 2015.

"We reaffirm our support for mobilising finance for adaptation and mitigation, such as the Green Climate Fund."

The UN-backed fund was set up to help poor countries deal with the impacts of climate change, such as rising sea levels and severe weather events. The US this weekend committed US$3 billion to the fund, and Japan US$1.5 billion.

The communique also confirmed G20 members have committed to lifting economic output to deliver an additional 2.1 per cent growth boost by 2018. The target will add more than A$2.16 trillion to the global economy and create millions of jobs.

Progress would be evaluated at next year's summit in Turkey.

- AAP