UNITED NATIONS, April 8, Xinhua -- A record number of countries are expected to sign a historic climate agreement at a signing ceremony on April 22, the deputy UN spokesman said here Thursday.

thumb Topics-Climate change - 4.9 Record number of countries expected to sign historic Paris climate accord

From L-R, Christiana Figueres, Executive Secretary of the UN Framework Convention on Climate Change, United Nations Secretary-General Ban Ki-moon, French Foreign Affairs Minister Laurent Fabius, President-designate of COP21 and French President Francois Hollande react during the final plenary session at the World Climate Change Conference 2015 (COP21) at Le Bourget, near Paris, France, on Dec. 12, 2015. (Reuters/File Photo) 

More than 130 countries have confirmed that they will sign the Paris Agreement on that day, the first day that the accord adopted in December in Paris is open for signature, Farhan Haq said at a daily news briefing here.

"This is expected to surpass the previous record of 119 signatures for an opening day signing for an international agreement, set by the Law of the Sea in Montego Bay (in Jamaica) in 1994," he said.

More than 60 heads of state and government will be attending the signing ceremony to be hosted at UN Headquarters in New York by UN Secretary-General Ban Ki-moon, demonstrating the continued high level of engagement by world leaders to accept and implement the Paris Agreement, he said. 

"The Signing Ceremony will mark the first step toward ensuring that the Paris Agreement enters into force as early as possible," he said.

"The Agreement will enter into force 30 days after at least 55 countries, accounting 55 percent of global greenhouse gas emissions, deposit their instruments of ratification or acceptance with the secretary-general."

Adopted by the 196 Parties of the United Nations Framework Convention on Climate Change, the Paris Agreement sets a target of holding the global average rise in temperature below 2 degrees Celsius above pre-industrial levels, and preferably below 1.5 degrees.

On the basis of common but differentiated responsibilities and respective capabilities, developed countries agreed to raise 100 billion U.S. dollars a year by 2020 to help developing countries transform their economies.