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The story behind unexpected emissions of CFC-11

Trichloromethane, also known as CFC-11, made headlines in 2018 when scientists alerted us of an unexpected increase i

Parties to the Vienna Convention and the Montreal Protocol meet and adopt 18 key decisions

Nairobi, 1 November 2021 – From 23 to 29 October 2021, parties and other stakeholders convened onlin

2021 Antarctic Ozone Hole 13th Largest Since 1979

The 2021 Antarctic ozone hole reached its maximum area on Oct.

Kigali Amendment celebrates 5 years of climate action

On this day we celebrate the 5th anniversary of the adoption of the Kigali Amendment to the Montreal Protocol on 15 O

International Day of the Girl: Lilly Platt

To mark this year’s International Day of the Girl, the Ozone Secretariat had the pleasure of speaking with Lilly Plat

WOD2021 videos

Why the ‘larger than usual ozone hole’ is NOT unusual

21 September 2021. Credit: NASA

In 2017, the ozone hole's annual maximum set a record -- the smallest it's been since 1988

This year, the ozone hole's annual maximum set a record -- the smallest it's been since 1988.

Montreal Protocol 30th anniversary

Made on the occasion of the 30th anniversary of the Montreal Protocol

UN Secretary General: 30th Anniversary of Montreal Protocol

Made on the occasion of the 30th anniversary of the Montreal Protocol

The Hole - A film on the Montreal Protocol, narrated by Sir David Attenborough

Sir David Attenborough narrates the extraordinary history of the Montreal Protocol to raise awareness of the 28th Mee

Precious Ozone - The Climate Connection

This film shows the Protocol’s contribution to the protection of the climate and the greenhouse gas potential of som

Montreal Protocol and the SDGs

How will the Montreal Protocol contribute to delivering on the 2030 Agenda for Sustainable Development?

Montreal Protocol Achievements

The Montreal Protocol on Substances that Deplete the Ozone Layer has led to significant environmental, health and eco

Precious Ozone - The Size of it

Space is closer than you think.

Increased research and observation crucial to efforts to continue to protect the ozone layer and climate

Top ozone experts from around the world highlighted the need for increased research and observations to inform policy

Countries begin preparing for implementation of the Kigali Amendment
At their 39th meeting in Bangkok from 11 to 14 July, the Open-Ended Working Group of the Parties to the Montreal Protocol
New ‘Ozone Heroes’ campaign celebrates efforts to protect all life on Earth

In honour of the 30th anniversary of the landmark Montreal Protocol on Substances that Deplete the Ozone L

Countries Set to Start Working on the Dubai Pathway to Reduce HFCs under the Montreal Protocol

Who: Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer

Montreal Protocol Parties Discuss HFC Management Issues and Agree to Continue Exploring Ways Forward

Bangkok, 24 April 2015 – Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer

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Kigali Amendment Kigali Amendment
Montreal protocol progress
Kigali Amendment

The Kigali Amendment to the Montreal Protocol entered into force on 1 January 2019 after the threshold for the agreement to enter into force was met on 17 November 2017, when it was ratified by 20 parties.

Working towards climate neutrality Working towards climate neutrality
Greening the blue
Working towards climate neutrality

The Ozone Secretariat is part of the UN’s “Greening the Blue” efforts to move towards climate neutrality. The Secretariat works towards climate neutrality by measuring the carbon footprint of Vienna Convention and Montreal Protocol meetings ...

World Ozone Day

Montreal Protocol - Global cooperation protecting life on earth

Montreal Protocol - Keeping us, our food and vaccines cool

Ozone for life: 35 years of ozone layer protection

32 years and healing

Keep cool and carry on

30th anniversary of the Montreal Protocol: we are all ozone heroes

Ozone and climate: restored by a world united

Precious ozone: 30th anniversary of the Vienna Convention and international ozone day 2015

Earlier celebrations of international ozone day