Montreal Protocol Ozone Secretariat
@unepozone.bsky.social
The ozone layer, an invisible shield around the Earth protects all living things from the effects of the sun’s harmful ultraviolet radiation. Through the Protocol’s Kigali Amendment, countries are helping to avoid an estimated 0.5°C of warming by 2100.
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As 2025 draws to a close, we take a moment to reflect on an extraordinary year. Our end-of-year video captures the highlights—major events, key decisions and collective successes that shaped this year.
Wishing you a joyful festive season with your loved ones and a bright, successful 2026 ahead 🎉
Wishing you a joyful festive season with your loved ones and a bright, successful 2026 ahead 🎉
Some great news as 2025 draws to a close: Malta 🇲🇹 becomes the 172nd party to ratify the Kigali Amendment! The more countries that commit to this amazing cooling tool, the more we can reach the potential 0.5°C in avoided warming by 2100 - double if energy efficiencies are also adopted!!
December 22, 2025 at 6:55 AM
Some great news as 2025 draws to a close: Malta 🇲🇹 becomes the 172nd party to ratify the Kigali Amendment! The more countries that commit to this amazing cooling tool, the more we can reach the potential 0.5°C in avoided warming by 2100 - double if energy efficiencies are also adopted!!
As 2025 draws to a close, we take a moment to reflect on an extraordinary year. Our end-of-year video captures the highlights—major events, key decisions and collective successes that shaped this year.
Wishing you a joyful festive season with your loved ones and a bright, successful 2026 ahead 🎉
Wishing you a joyful festive season with your loved ones and a bright, successful 2026 ahead 🎉
December 18, 2025 at 7:46 AM
As 2025 draws to a close, we take a moment to reflect on an extraordinary year. Our end-of-year video captures the highlights—major events, key decisions and collective successes that shaped this year.
Wishing you a joyful festive season with your loved ones and a bright, successful 2026 ahead 🎉
Wishing you a joyful festive season with your loved ones and a bright, successful 2026 ahead 🎉
"As shown by the Montreal Protocol, transformative change can begin with just a handful of pioneering nations, before spreading worldwide."
#MontrealProtocol #OzoneAction #GlobalAction
www.theguardian.com/commentisfre...
#MontrealProtocol #OzoneAction #GlobalAction
www.theguardian.com/commentisfre...
This is another ‘ozone layer’ moment. Now, we must urgently target methane | Mia Mottley
The oil and gas industry must be legally bound to cut methane emissions. With climate tipping points approaching, time is running out, says the prime minister of Barbados, Mia Mottley
www.theguardian.com
December 17, 2025 at 5:42 AM
"As shown by the Montreal Protocol, transformative change can begin with just a handful of pioneering nations, before spreading worldwide."
#MontrealProtocol #OzoneAction #GlobalAction
www.theguardian.com/commentisfre...
#MontrealProtocol #OzoneAction #GlobalAction
www.theguardian.com/commentisfre...
The #MontrealProtocol Ozone Secretariat hosted a high-level Kigali Amendment event during #UNEA7. Ministers and high-level dignitaries from 🇧🇹 🇨🇴 🇷🇼 🇸🇳 🇦🇪 and 🇬🇧 spoke of the importance of ratifying the Kigali Amendment, noting the cooling benefits that can be achieved.
#OzoneAction #GlobalAction 🌎
#OzoneAction #GlobalAction 🌎
December 16, 2025 at 6:53 AM
The #MontrealProtocol Ozone Secretariat hosted a high-level Kigali Amendment event during #UNEA7. Ministers and high-level dignitaries from 🇧🇹 🇨🇴 🇷🇼 🇸🇳 🇦🇪 and 🇬🇧 spoke of the importance of ratifying the Kigali Amendment, noting the cooling benefits that can be achieved.
#OzoneAction #GlobalAction 🌎
#OzoneAction #GlobalAction 🌎
The Ozone Secretariat convened a side event during #UNEA7 to highlight the importance of atmospheric monitoring and explore possible synergistic action and opportunities for collaboration.
For the side event recording and presentations bit.ly/48Sr1hr
#MontrealProtocol #OzoneAction #GlobalAction
For the side event recording and presentations bit.ly/48Sr1hr
#MontrealProtocol #OzoneAction #GlobalAction
December 15, 2025 at 9:38 AM
The Ozone Secretariat convened a side event during #UNEA7 to highlight the importance of atmospheric monitoring and explore possible synergistic action and opportunities for collaboration.
For the side event recording and presentations bit.ly/48Sr1hr
#MontrealProtocol #OzoneAction #GlobalAction
For the side event recording and presentations bit.ly/48Sr1hr
#MontrealProtocol #OzoneAction #GlobalAction
📢 Great news! Azerbaijan 🇦🇿 has become the latest party to ratify the Kigali Amendment becoming the 171st party to do so 🎉 Phasing down climate-warming HFCs and improving the energy efficiency of cooling technology can avoid up to 1°C by the end of the century. A win-win for everyone!
December 10, 2025 at 5:49 AM
📢 Great news! Azerbaijan 🇦🇿 has become the latest party to ratify the Kigali Amendment becoming the 171st party to do so 🎉 Phasing down climate-warming HFCs and improving the energy efficiency of cooling technology can avoid up to 1°C by the end of the century. A win-win for everyone!
Join us, @unepozone.bsky.social, @brsconventions.bsky.social, @minamataconvention.bsky.social and the @wmo-global.bsky.social for a side event during #UNEA7 delving into atmospheric monitoring and exploring cooperation, cohabitation and co-financing of locations.
#GlobalAction
#GlobalAction
December 5, 2025 at 8:34 AM
Join us, @unepozone.bsky.social, @brsconventions.bsky.social, @minamataconvention.bsky.social and the @wmo-global.bsky.social for a side event during #UNEA7 delving into atmospheric monitoring and exploring cooperation, cohabitation and co-financing of locations.
#GlobalAction
#GlobalAction
Authorities in Canada have discovered counterfeit cylinders of R410A refrigerant containing a mixture of R40: methyl chloride or chloromethane, and other HFCs. R40 is extremely flammable and corrosive & should not be used as a replacement for R410A refrigerant.
www.coolingpost.com/world-news/c...
www.coolingpost.com/world-news/c...
Canada warns of potentially lethal counterfeit R410A - Cooling Post
CANADA: Authorities in Canada have discovered counterfeit cylinders of R410A refrigerant containing potentially lethal methyl chloride....Read More...
www.coolingpost.com
December 4, 2025 at 11:48 AM
Authorities in Canada have discovered counterfeit cylinders of R410A refrigerant containing a mixture of R40: methyl chloride or chloromethane, and other HFCs. R40 is extremely flammable and corrosive & should not be used as a replacement for R410A refrigerant.
www.coolingpost.com/world-news/c...
www.coolingpost.com/world-news/c...
A recent study suggests that heat pumps can be operated efficiently even in older buildings and that they provide climate-friendly heating without the need for the buildings to be renovated to new construction standards, as previously thought.
www.coolingpost.com/world-news/s...
www.coolingpost.com/world-news/s...
Study confirms heat pump efficiency in existing homes - Cooling Post
GERMANY: A recent German study has concluded that heat pumps provide efficient and climate-friendly heating even in older existing buildings....Read More...
www.coolingpost.com
December 4, 2025 at 9:22 AM
A recent study suggests that heat pumps can be operated efficiently even in older buildings and that they provide climate-friendly heating without the need for the buildings to be renovated to new construction standards, as previously thought.
www.coolingpost.com/world-news/s...
www.coolingpost.com/world-news/s...
The continued practice of trading in substances controlled or banned under the #MontrealProtocol underlines the importance of border controls and customs officers to monitor the movement of international trade.
#ozonelayer #illegaltrade
www.coolingpost.com/world-news/g...
#ozonelayer #illegaltrade
www.coolingpost.com/world-news/g...
Greek police shut down refrigerant smuggling ring - Cooling Post
GREECE: Greek authorities claim to have dismantled a large-scale criminal organisation illegally importing refrigerants from Albania....Read More...
www.coolingpost.com
December 2, 2025 at 7:51 AM
The continued practice of trading in substances controlled or banned under the #MontrealProtocol underlines the importance of border controls and customs officers to monitor the movement of international trade.
#ozonelayer #illegaltrade
www.coolingpost.com/world-news/g...
#ozonelayer #illegaltrade
www.coolingpost.com/world-news/g...
This is not a case of job done! While this is a big win for the ozone layer, expected recovery to pre-1980 levels will still take decades #MontrealProtocol
nchstats.com/nasa-ozone-h...
nchstats.com/nasa-ozone-h...
NASA Confirms a Big Win for the Planet: 2025 Ozone Hole Among the Smallest in Decades - North American Community Hub
NASA confirms the 2025 ozone hole is among the smallest in decades, marking a major environmental win and progress in global climate recovery.
nchstats.com
December 1, 2025 at 11:01 AM
This is not a case of job done! While this is a big win for the ozone layer, expected recovery to pre-1980 levels will still take decades #MontrealProtocol
nchstats.com/nasa-ozone-h...
nchstats.com/nasa-ozone-h...
To mark the 40th anniversary of the adoption of the Vienna Convention a special screening event was held. A science panel helped shape the screening into an inspiring and engaging discussion. For the event and documentary bit.ly/44vHdnf
#MontrealProtocol #OzoneAction is #GlobalAction #ozonelayer
#MontrealProtocol #OzoneAction is #GlobalAction #ozonelayer
December 1, 2025 at 5:33 AM
To mark the 40th anniversary of the adoption of the Vienna Convention a special screening event was held. A science panel helped shape the screening into an inspiring and engaging discussion. For the event and documentary bit.ly/44vHdnf
#MontrealProtocol #OzoneAction is #GlobalAction #ozonelayer
#MontrealProtocol #OzoneAction is #GlobalAction #ozonelayer
2025 Antarctic ozone hole among smallest in decades. The ozone hole this year was relatively modest in size, ranking as the 5th smallest since 1992. Scientists attribute this to global action under the #MontrealProtocol 🌎
For the full summary: bit.ly/48ii3K8
#OzoneAction is #GlobalAction
For the full summary: bit.ly/48ii3K8
#OzoneAction is #GlobalAction
November 25, 2025 at 7:10 AM
2025 Antarctic ozone hole among smallest in decades. The ozone hole this year was relatively modest in size, ranking as the 5th smallest since 1992. Scientists attribute this to global action under the #MontrealProtocol 🌎
For the full summary: bit.ly/48ii3K8
#OzoneAction is #GlobalAction
For the full summary: bit.ly/48ii3K8
#OzoneAction is #GlobalAction
🧭 Navigating your way through childhood can be tough without worrying about the planet!* Great news: the Montreal Protocol has got your back and is saving the ozone layer. Phew! One less worry! Striving for happy children on #WorldChildrensDay 🎉
*Climate anxiety in children is real bit.ly/43yvjJ2
*Climate anxiety in children is real bit.ly/43yvjJ2
November 19, 2025 at 2:11 PM
🧭 Navigating your way through childhood can be tough without worrying about the planet!* Great news: the Montreal Protocol has got your back and is saving the ozone layer. Phew! One less worry! Striving for happy children on #WorldChildrensDay 🎉
*Climate anxiety in children is real bit.ly/43yvjJ2
*Climate anxiety in children is real bit.ly/43yvjJ2
Exciting progress: Mauritania 🇲🇷 has become the 170th party to ratify the Kigali Amendment 👏 and will commence with the phase down of HFCs and adopting more energy efficient cooling technology ❄️
Only 28 parties remain before we reach full ratification. For the latest update: ozone.unep.org
Only 28 parties remain before we reach full ratification. For the latest update: ozone.unep.org
November 13, 2025 at 11:20 AM
Exciting progress: Mauritania 🇲🇷 has become the 170th party to ratify the Kigali Amendment 👏 and will commence with the phase down of HFCs and adopting more energy efficient cooling technology ❄️
Only 28 parties remain before we reach full ratification. For the latest update: ozone.unep.org
Only 28 parties remain before we reach full ratification. For the latest update: ozone.unep.org
To mark the 40th anniversary of the Vienna Convention, Ozone Secretariat communications developed a documentary that charts the journey from the hypothesis in the 1970s that CFCs destroy ozone and the discovery of the ozone hole to #ozonelayer protection then and now 🌏
youtu.be/WE76WPDQ9Y0
youtu.be/WE76WPDQ9Y0
40 years of the Vienna Convention: Documentary
YouTube video by Ozone Secretariat
youtu.be
November 7, 2025 at 9:04 AM
To mark the 40th anniversary of the Vienna Convention, Ozone Secretariat communications developed a documentary that charts the journey from the hypothesis in the 1970s that CFCs destroy ozone and the discovery of the ozone hole to #ozonelayer protection then and now 🌏
youtu.be/WE76WPDQ9Y0
youtu.be/WE76WPDQ9Y0
📯 SIDE EVENTS starting in earnest at #MOP37. We have 6 daily, starting with 3 side events during the plenary lunchtime break.
For the full list of organisers, event descriptions and timings please check bit.ly/4hDNzpZ
#OzoneAction #GlobalAction 🌿
For the full list of organisers, event descriptions and timings please check bit.ly/4hDNzpZ
#OzoneAction #GlobalAction 🌿
November 1, 2025 at 12:33 PM
📯 SIDE EVENTS starting in earnest at #MOP37. We have 6 daily, starting with 3 side events during the plenary lunchtime break.
For the full list of organisers, event descriptions and timings please check bit.ly/4hDNzpZ
#OzoneAction #GlobalAction 🌿
For the full list of organisers, event descriptions and timings please check bit.ly/4hDNzpZ
#OzoneAction #GlobalAction 🌿
📯 UPCOMING SIDE EVENTS at #MOP37
For the full list of organisers, event descriptions and timings please check bit.ly/4hDNzpZ
#OzoneAction #GlobalAction 🌿
For the full list of organisers, event descriptions and timings please check bit.ly/4hDNzpZ
#OzoneAction #GlobalAction 🌿
October 31, 2025 at 9:11 AM
📯 UPCOMING SIDE EVENTS at #MOP37
For the full list of organisers, event descriptions and timings please check bit.ly/4hDNzpZ
#OzoneAction #GlobalAction 🌿
For the full list of organisers, event descriptions and timings please check bit.ly/4hDNzpZ
#OzoneAction #GlobalAction 🌿
More great news for the weekend with Pakistan 🇵🇰 confirmed as the 169th party to ratify the Kigali Amendment 👏 Fantastic news. Why? Because this incredible cooling tool could potentially avoid up to 1°C in avoided warming by the end of this century! ozone.unep.org
#MontrealProtocol #GlobalAction
#MontrealProtocol #GlobalAction
October 24, 2025 at 12:49 PM
More great news for the weekend with Pakistan 🇵🇰 confirmed as the 169th party to ratify the Kigali Amendment 👏 Fantastic news. Why? Because this incredible cooling tool could potentially avoid up to 1°C in avoided warming by the end of this century! ozone.unep.org
#MontrealProtocol #GlobalAction
#MontrealProtocol #GlobalAction
For 40 years, the ozone treaties have safeguarded life on Earth by protecting the ozone layer 🌏
On #UNDay @unepozone.bsky.social reaffirms its commitment to supporting the work of the ozone treaties to deliver for people and planet 🌿 bit.ly/4qrrsqG
#OzoneAction #GlobalAction #UN80
On #UNDay @unepozone.bsky.social reaffirms its commitment to supporting the work of the ozone treaties to deliver for people and planet 🌿 bit.ly/4qrrsqG
#OzoneAction #GlobalAction #UN80
October 24, 2025 at 7:08 AM
For 40 years, the ozone treaties have safeguarded life on Earth by protecting the ozone layer 🌏
On #UNDay @unepozone.bsky.social reaffirms its commitment to supporting the work of the ozone treaties to deliver for people and planet 🌿 bit.ly/4qrrsqG
#OzoneAction #GlobalAction #UN80
On #UNDay @unepozone.bsky.social reaffirms its commitment to supporting the work of the ozone treaties to deliver for people and planet 🌿 bit.ly/4qrrsqG
#OzoneAction #GlobalAction #UN80
At @unepozone.bsky.social we encourage the parties to the #MontrealProtocol due to attend #MOP37 to bring their own water bottles so that we can ensure our meetings do not contribute to the use of and build up of unnecessary singe-use plastic waste bit.ly/3WUnklu 🌿
#OzoneAction #GlobalAction
#OzoneAction #GlobalAction
October 22, 2025 at 1:14 PM
At @unepozone.bsky.social we encourage the parties to the #MontrealProtocol due to attend #MOP37 to bring their own water bottles so that we can ensure our meetings do not contribute to the use of and build up of unnecessary singe-use plastic waste bit.ly/3WUnklu 🌿
#OzoneAction #GlobalAction
#OzoneAction #GlobalAction
Great news for the weekend! The CAR 🇨🇫 has just become the 168th party to ratify the Kigali Amendment 👏 With only 30 countries to go this is fantastic. Why? Because this incredible cooling tool could avoid up to 1°C in avoided warming by end of 2100! ozone.unep.org 🌍
#MontrealProtocol #GlobalAction
#MontrealProtocol #GlobalAction
October 17, 2025 at 7:24 AM
Great news for the weekend! The CAR 🇨🇫 has just become the 168th party to ratify the Kigali Amendment 👏 With only 30 countries to go this is fantastic. Why? Because this incredible cooling tool could avoid up to 1°C in avoided warming by end of 2100! ozone.unep.org 🌍
#MontrealProtocol #GlobalAction
#MontrealProtocol #GlobalAction
We are looking forward to hosting delegates for the 37th Meeting of the Parties to the #MontrealProtocol due to be held in Nairobi, Kenya from 3-7 November 2025.
For updates meeting information, side events and updates follow us on social media or bit.ly/4okCAE8
#OzoneAction is #GlobalAction 🌍
For updates meeting information, side events and updates follow us on social media or bit.ly/4okCAE8
#OzoneAction is #GlobalAction 🌍
October 15, 2025 at 2:03 PM
We are looking forward to hosting delegates for the 37th Meeting of the Parties to the #MontrealProtocol due to be held in Nairobi, Kenya from 3-7 November 2025.
For updates meeting information, side events and updates follow us on social media or bit.ly/4okCAE8
#OzoneAction is #GlobalAction 🌍
For updates meeting information, side events and updates follow us on social media or bit.ly/4okCAE8
#OzoneAction is #GlobalAction 🌍
This year, on #DayOfTheGirl we celebrate girls not just for who they are, but for the change they lead.
Living in a dystopian future ravaged by environmental collapse, Knox embodies courage, resilience and the power of youth-led action. This is her story bit.ly/4oh6ARm
#ResetEarth
Living in a dystopian future ravaged by environmental collapse, Knox embodies courage, resilience and the power of youth-led action. This is her story bit.ly/4oh6ARm
#ResetEarth
October 10, 2025 at 11:01 AM
This year, on #DayOfTheGirl we celebrate girls not just for who they are, but for the change they lead.
Living in a dystopian future ravaged by environmental collapse, Knox embodies courage, resilience and the power of youth-led action. This is her story bit.ly/4oh6ARm
#ResetEarth
Living in a dystopian future ravaged by environmental collapse, Knox embodies courage, resilience and the power of youth-led action. This is her story bit.ly/4oh6ARm
#ResetEarth