The Iranian minister left Tehran for New York early Monday and will hold talks with a number of senior officials attending the event.
The Paris Agreement -- dubbed COP21 was adopted by all 196 Parties to the United Nations Framework Convention on Climate Change in December 2015. In the agreement, all countries agreed to work to limit global warming to "well below" 2.0 degrees Celsius (3.6 Fahrenheit) compared to pre-industrial levels.
The signing ceremony, which will be held on April 22, will build on the strong political momentum from Paris for urgent global climate action by all countries and is essential for achieving the Sustainable Development Goals and creating a more prosperous, equitable and livable future for all people.
The climate pact will enter into force after 55 countries that account for at least 55 percent of global emissions have deposited their instruments of ratification.
Iranian Foreign Ministry spokesman, Hossein Jaberi Ansari, said on Monday that Zarif will also meet his US counterpart, John Kerry, to discuss the implementation of a nuclear agreement, dubbed the Joint Comprehensive Plan of Action (JCPOA), reached between Iran and the P5+1 group of countries – the United States, Britain, France, Russia and China plus Germany – in July 2015.
After Iran and the six world powers started to implement the JCPOA on January 16, all nuclear-related sanctions imposed on Iran by the European Union, the Security Council and the US were lifted. Iran, in return, has put some limitations on its nuclear activities.