U.N. officials say the Paris Agreement on Climate Change appears likely to enter into force within the next few days with India announcing that it has ratified the agreement and the EU signaling it may ratify within the next few days.

The two ratifications would mean that 63 countries accounting for nearly 65 percent of the world's greenhouse gas emissions will have approved the accord, which is set to take effect 30 days after 55 countries accounting for 55 percent of emissions deposit their ratification instruments with the U.N.

"We've heard that Europe Union may deposit its ratification instruments with us much sooner than we had expected, which would be tremendous news," U.N. Spokesman Stephane Dujarric said.