Global investors are becoming more aware of the risk of the global warming and thinking that their investments can function as a spearhead to counter the problem, said the head of the world's leading organization that advocates responsible investment.

"I think investors understand that, more than ever, it's important they engage in this issue," said Martin Skancke, who chairs the Principles for Responsible Investment, during an interview last week in Tokyo.

To enhance investor community contributions toward tackling climate change roles of Asian countries will be more critical, so the PRI has been more active in investing in the region, he said.