India, China Must be Responsible to Combat Climate Change: U.S.

"While no single weather event can be attributed to climate change, but the increase in the severity of weather that we have seen is attributable," said Carney.

"And that has significant impacts on our nation, on our people, on our economy. You see longer, hotter, drier droughts. You see more severe storms, like we saw with Sandy. And it will only get worse, again, according to the science," he said.

Carney further said: "I understand that there is an inclination upon some to doubt the science, despite the overwhelming evidence and the overwhelming percentage in the 97 per cent range of scientists who study this issue who agree that climate change is real and that it is the result of human activity. But that denial doesn't help the country, the economy or the American people as it deals with a fact that is confronting us now, impacts that are real now."

"The good news is that there are things we can do, practical things we can do to mitigate the challenges that climate change poses in the future, but also to prepare for the impacts that we are already experiencing and will experience because of climate change," he said.