UNITED NATIONS — The landmark Paris agreement on climate change will enter into force on Nov. 4, after being pushed past a key threshold Wednesday by a coalition of the world’s largest polluters and small island nations threatened by rising seas.
President Obama hailed the news as ‘‘a turning point for our planet,’’ and UN Secretary General Ban Ki-moon called the agreement’s strong international support a ‘‘testament for the urgency of action.’’
United Nations spokesman Farhan Haq said the European Union, Canada, and Nepal would deposit their instruments of ratification Wednesday, edging the percentage of emissions by ratifying countries past the 55 percent threshold needed for the treaty to take effect.
The deal takes effect 30 days after 55 countries, accounting for at least 55 percent of global emissions, have adopted it.
Sixty-two countries had done so as of Tuesday but they accounted for about only 52 percent of emissions.
The Paris agreement commits rich and poor countries to take action to curb the rise in global temperatures. It requires governments to present national plans to reduce emissions to limit global temperature rise to well below 3.6 degrees Fahrenheit.
While the targets in the agreement are not legally binding, the treaty does require countries to report on emissions and their progress on reaching the goals.