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Ozone research managers say no room for complacency on ozone layer recovery


Systematic observations are vital to understand impact of changing climate

Parties to the Montreal Protocol continue online discussions on unexpected emissions of CFC-11 and energy efficiency

Nairobi, 20 July 2021 – From 14-17 July 2021, parties and other stakeholders to the Montreal Protoco

Parties to the Montreal Protocol continue online discussions on the replenishment of the Multilateral Fund

Nairobi, 25 May 2021 – Over the course of 21, 22 and 24 May 2021, parties and other stakeholders to

Update: Contingency plan for the meetings of the ozone treaties in 2021

As we progress into the second quarter of 2021, it is evident that despite the increased roll-out of the various COVI

UN System Works Together to Reduce Environmental Footprint

UNEP, in collaboration with hundreds of UN personnel from across the UN System, annually collects and analyses inform

Choose to challenge on 2021 International Women’s Day

To mark International Women’s Day on 8 March 2021, we asked female delegates working for the Montreal Protocol why it

Global CFC-11 emissions back on track

Global emissions of CFC-11, the second most abundant ozone-depleting substance controlled by the Montreal Protocol, d

Parties to the Montreal Protocol make key decisions

What: Combined twelfth meeting of the Conference of the Parties (part I) and Thirty-Second Meeting o

Parties to the Montreal Protocol meet to take decisions on budget and other key issues

What: Combined twelfth meeting of the Conference of the Parties (part I) and Thirty-Second Meeting o

Assessment reveals healing ozone, untapped potential for climate action

Update, 1 Februrary 2019 - The full report of the 2018 Quadrennial Assessment of Ozone Depletion has

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


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 - 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