Greenhouse gases reached another record high in 2023, warns UN weather agency
New data released by the UN on Monday indicating that greenhouse gases have hit a record high shows once again that urgent action and not words is needed from the world’s major polluters to protect us all from climate change, the World Meteorological Organization (WMO) insisted.
The appeal comes as global leaders prepare to gather for the UN’s Climate Change Conference in Baku next month, amid repeated dire warnings about the human cost of ignoring the existential crisis from UN Secretary-General António Guterres and others.
Echoing the UN chief’s longstanding appeals, WMO Deputy Secretary-General Ko Barrett told journalists that carbon dioxide (CO2) – one of the three main greenhouse gases, along with methane and nitrous oxide - is now accumulating in the atmosphere “faster than at any time experienced during human existence”. Because of the extremely long lifetime of CO2 in the atmosphere, “we are committed to rising temperatures for many, many years to come”, she added.
WMO’s 2024 Greenhouse Gas Bulletin offers a stark, scientific reminder that rising CO2 levels need to be slowed. In 2004, the concentration of carbon dioxide in the atmosphere was 377.1 parts per million (ppm), while in 2023, this reached 420 ppm, according to WMO’s Global Atmosphere Watch Network. “This is an increase of 42.9 parts per million, or 11.4 per cent in just 20 years,” Ms. Barrett explained.
“These are more than statistics," the WMO deputy chief insisted. "Every part per million matters, every fraction of a degree of temperature increase matters; it matters in terms of the speed of glacier and ice retreat, the acceleration of sea level rise, ocean heat and acidification. It matters in terms of the number of people who will be exposed to extreme heat every year, the extinction of species, the impact on our ecosystems and economies.”
Key greenhouse gas-producing events include forest fires and the El Niño weather phenomenon which fuelled drier conditions and a “surge” in concentrations in the latter part of 2023, according to WMO. Its analysis shows that just under half of CO2 emissions remain in the atmosphere, just over one quarter are absorbed by the ocean and just under 30 per cent are retained on land.
Senior scientific officer at WMO, Oksana Tarasova, described last year’s wildfires in Canada as “absolutely dramatic” in terms of the amount of greenhouse gases produced.
Today’s CO2 levels have not been seen “in the history of humanity”, she said. “The last time we see 400 parts per million of CO2 was three to five million years ago, and during that time, the temperature was three to four degrees warmer” and sea levels 10-20 metres higher.
The WMO report pointed out that from 1990 to 2023, radiative forcing – the warming effect on our climate from greenhouse gases increased by 51.5 per cent. CO2 accounted for more than 80 per cent of this increase, according to data from the National Oceanic and Atmospheric Administration Annual Greenhouse Gas Index.
“As long as emissions continue, greenhouse gases will continue accumulating in the atmosphere leading to global temperature rise,” the UN agency said. “Given the extremely long life of CO2 in the atmosphere, the temperature level already observed will persist for several decades even if emissions are rapidly reduced to net zero.”
Asked about whether the UN climate conference might be expected to yield tangible commitments from countries, the WMO Deputy Secretary-General noted that politicians worldwide do reference the latest scientific climate findings and forecasts in their public declarations. “So I do think they are listening, the question is to what degree will we see that manifest at COP29 in action,” she said.
Ms. Barrett noted that measures taken at a national level to transition to a “lower fossil fuel economy” were massively important to safeguard future generations.
“Even though there is a lag and temperatures will rise, we are not to be dissuaded from action,” she said, “because there will be a transformation and a downward trend in temperature in future. It all just depends on how quickly we take action and how fast we can reduce those temperatures.”
Story: Record greenhouse gas levels - WMO
Speakers:
Ko Barrett, WMO Deputy Secretary-General
Oksana Tarasova, Senior scientific officer, WMO
TRT: 0x’”
SOURCE: UNTV CH
LANGUAGE: ENGLISH / NATS
ASPECT RATIO: 16:9
DATELINE: 28 October 2024 - GENEVA, SWITZERLAND
RESTRICTIONS: None
SHOTLIST
1
1
1
Edited News | OHCHR , UNOG
The United Nations Integrated Office in Haiti (BINUH) and the UN Human Rights Office have today released a report detailing the evolution of violent gang incidents beyond the capital Port-au-Prince since October 2024 up to June 2025, and the resulting loss of life and mass displacement.
1
1
1
Statements , Press Conferences | OHCHR , UNOG
UN Human Rights Office (OHCHR) spokesperson Ravina Shamdasani at the Geneva press briefing in response to questions about US sanctions imposed on UN Special Rapporteur on the situation of human rights in the Palestinian Territory occupied since 1967, Francesca Albanese.
1
1
1
Press Conferences | UNHCR , OHCHR , WHO
Rolando Gómez, Chief of the Press and External Relations Section at the United Nations Information Service (UNIS) in Geneva, chaired the hybrid briefing, which was attended by spokespersons and representatives from the UN Refugee Agency, the Office of the United Nations High Commissioner for Human Rights and the World Health Organization.
1
1
1
Edited News | WHO , OHCHR
Gaza: ‘Unacceptable’ choice between getting shot or getting fed – UN humanitarians
Following the deaths of several children in an Israeli strike on Palestinians waiting in line for nutritional supplements in central Gaza on Thursday, UN humanitarians have once again condemned the killings of people at aid distribution sites in the enclave.
1
1
1
Press Conferences | WMO
Sara Basart, WMO Scientific Officer, speaks.
1
1
1
Press Conferences | IFRC , OHCHR , WHO , UNCTAD
Rolando Gómez, Chief of the Press and External Relations Section at the United Nations Information Service (UNIS) in Geneva, chaired the hybrid briefing, which was attended by spokespersons and representatives from the International Trade Centre, International Federation of Red Cross and Red Crescent Societies, United Nations High Commissioner for Refugees, Office of the United Nations High Commissioner for Human Rights, World Health Organization, and United Nations Trade and Development.
1
1
1
Edited News | OHCHR , UNOG
At the United Nations bi-weekly press briefing in Geneva, Ravina Shamdasani, Spokesperson for the Office of the UN High Commissioner for Human Rights made the following comments on the recent violence in Kenya.
1
1
1
Press Conferences | ITC
1
1
1
Edited News | ITC
US tariffs uncertainty hurts world economy, with poorest countries hit hardest – top UN economist
A new US decision to further delay the end of a 90-day pause on tariffs is bad for business, a top UN economist said on Tuesday.
1
1
1
Press Conferences | WIPO , UNICEF , UNHCR , WHO , IFRC
Rolando Gómez, of the United Nations Information Service in Geneva, chaired a hybrid press briefing, which was attended by the representatives and spokespersons of the United Nations High Commission for Refugees, the Office of the High Commissioner for Human Rights, the International Federation of the Red Cross, the World Intellectual Property Organisation, the Organisation Internationale pour la Francophonie, and the GIGA Connectivity Forum.
1
1
1
Edited News | WHO , OHCHR
Gaza aid site horror continues as more starving people shot trying to get food
Amid intensifying hopes for a new Gaza ceasefire, UN humanitarians confirmed disturbing details on Friday of continued killings and injuries of Palestinians desperately seeking food at aid sites.
1
1
1
Press Conferences | HRC
Launch of the latest report of the Special Rapporteur "From economy of occupation to economy of genocide".