The five-year, $2.65-billion announcement to help developing countries tackle the problem was announced at the Commonwealth leaders summit in Malta, where it’s becoming the top issue.

The contribution is part of Canada’s commitment towards a global climate fund seeking to raise $100-billion a year by 2020.

Prime Minister Justin Trudeau, issued a statement, saying ”Canada is back and ready to play its part in combating climate change.”

He adds this includes helping the poorest and most vulnerable countries adapt.

Foreign Affairs Minister Stephane Dion says the money will support them transition to low-carbon economies and tackle climate change more effectively.

The announcement comes ahead of next week’s international climate change conference in Paris.