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Opening for signature and high-level signature ceremony
 convened by the UN Secretary-General

signing PA, image reworked from Howard Hall, fountain pen tips 2 via Flickr

The Paris Agreement was opened for signature at the United Nations Headquarters in New York on
 22 April 2016 and will remain open until 21 April 2017, in accordance with Article 20, paragraph 1, of the Paris Agreement.

On 22 April 2016, a high-level signature ceremony was pdf-icon convened (1287 kB) by the Secretary-General of the United Nations. The ceremony was attended by COP President Ségolène Royal and UNFCCC Executive Secretary Christiana Figueres. On 22 April 2016, 175 States signed the Paris Agreement, and 15 States deposited instruments of ratification.

Signing the Paris Agreement indicates the intention of a Party to the Convention to take steps to express its consent to be bound by the Agreement. A separate act is required to express a Party’s consent to be bound. This act consists of the deposit of an instrument of ratification, acceptance, approval or accession with the Depositary.

The Paris Agreement shall enter into force on the thirtieth day after the date on which at least 55 Parties to the Convention accounting in total for at least an estimated 55 % of the total global greenhouse gas emissions have deposited their instruments of ratification, acceptance, approval or accession with the Depositary.

More information of the status of ratification of the Paris Agreement can be found here:

Information on the Paris Agreement can be found here.