UN GENEVA PRESS BRIEFING
10 January 2025
Global temperatures figures
Clare Nullis, for the World Meteorological Organization (WMO), stated that the WMO would later today confirm that 2024 was the hottest year on record. Extraordinary sea and land temperatures had been accompanied by extreme weather across the world, said Ms. Nullis. Many climate change impacts could be observed throughout the year. WMO would be issuing a press release at 5 pm Geneva time, and the six sources of data used in the consolidated report were the European Union’s Copernicus Climate Change Service, the United Kingdom Met Office, the US National Oceanic and Atmospheric Administration (NOAA), NASA, Berkley Earth, and Japan Meteorological Organization. WMO would also be incorporating data from the Ocean Consortium at the Chinese Academy of Sciences. At COP29 in Baku in November 2024, Ms. Nullis reminded, the WMO had already warned that 2024 would be the warmest on record, which would be confirmed later today.
Responding to questions, Ms. Nullis reiterated that all data sets were quite clear that the world was heading in the wrong direction. Ms. Nullis reminded that 2023 had been the warmest on record thus far and was now about to be overtaken by 2024. It did not mean, however, that every subsequent year would set a new temperature record. Going over the Paris Agreement’s limits of 1.5 Celsius degree warming was indeed a warning sign, but those trends would need to manifest over a longer timespan to declare that the Paris temperature limits were definitely breached. Ms. Nullis confirmed that the US National Oceanic and Atmospheric Administration had stated that La Niña conditions were present and expected to persist through February to April 2025.
California wildfires
Michele Zaccheo, for the United Nations information Service (UNIS), said that the UN Secretary-General was shocked and saddened by the widespread devastation caused by the fast-moving wildfires in the Los Angeles area in California. He extended his sincere condolences to the families of those who had lost their lives and commended the courage of the thousands of firefighters and first responders doing everything they could in extremely difficult conditions. The United Nations stood ready to provide assistance if needed.
Clare Nullis, for the World Meteorological Organization (WMO), said that the WMO extended its condolences to the victims of the Los Angeles wildfires. She reminded that California was no stranger to wildfires. The US National Weather Service had issued a red flag warning for parts of Los Angeles and Ventura counties, which said that because of the winds there was a risk of a further spread of wildfires. The 2024 rainy season for the Los Angeles area as a whole had been slightly above normal, but 2025 so far had been dry. The big compounding factor in this context were the winds, causing low humidity and temperature increases. The weather played a major role in this regard, and causes of wildfires could be multifold, said Ms. Nullis. NOAA stated that “climate change, including increased heat, extended drought, and a thirsty atmosphere, has been a key driver in increasing the risk and extent of wildfires in the western United States during the last two decades.” Ms. Nullis also reminded of a 2016 NOAA study which found climate change enhanced the drying of organic matter and doubled the number of large fires between 1984 and 2015 in the western United States. A 2021 study supported by NOAA concluded that climate change had indeed been the main driver of the increase in fire weather in the western United States.
Replying to questions, Ms. Nullis said that prevention had an important role to play, including preparation of adequate evacuation plans. She stressed the importance of an early warning system, which had worked well in this case.
Margaret Harris, for the World Health Organization (WHO), said that wildfires could have a significant morbidity and mortality effects. The smoke was of major concern, as the atmospheric particle matter PM with diameter 2.5 was associated with a premature death in general population. Particles deposited on the lung surface could induce tissue damage and lung inflammation, among other effects. More interdisciplinary research was needed to understand a long-term effect, she stressed.
Announcements
Pascal Sim, for the Human Rights Council (HRC), said that the 19th cycle of the Human Rights Council had begun this year, under the presidency of the Swiss Ambassador Jürg Lauber, with an organizational meeting of the Universal Periodic Review. A total of 42 States would be reviewed under the UPR mechanism in 2025, and the UPR session would begin on 20 January, informed Mr. Sim. Mr. Sim also confirmed that the HRC President would brief the media ahead of the next HRC session, which would start on 24 February.
From 13 to 17 January, the Intergovernmental Working Group on the Effective Implementation of the Durban Declaration and Programme of Action would hold its 23rd session in Room XVII of the Palais des Nations.
Mr. Sim further referred to the statement by the UN’s Independent International Fact-Finding Mission on the Bolivarian Republic of Venezuela, which said that the recent arrests, including those of prominent human rights defenders, political leaders, and their relatives, constituted yet another attack on the rights and freedoms of the Venezuelan people. Full statement is available here.
He also informed that commissioner Hanny Megally of the UN Commission of Inquiry on Syria had concluded a first visit to Syria on 9 January, taking crucial steps to foster dialogue and engagement with the new Syrian caretaker Government. He had visited Damascus, where he had held meetings with the Ministry of Foreign Affairs and the Ministry of Defense. He had also visited one of the detention centres of the former regime, which he described as “harrowing”. Such abuses should never be repeated again, and all those responsible should be held accountable, stated Mr. Megally. Statement on Mr. Megally’s visit can be read here.
Clare Nullis, for the World Meteorological Organization (WMO), announced that, in the context of 2025 as the International Year of Glaciers’ Preservation, on 16 January the WMO would organize a detailed, in-depth briefing online with experts on glaciers.
Responding to a question, Margaret Harris, for the World Health Organization (WHO), informed that on 14 January, the WHO Regional Committee for Africa would meet to decide on the process for the election of the next Regional Director for Africa. More details can be found here.
Michele Zaccheo, for the United Nations Information Service (UNIS), informed that the Committee on the Rights of the Child would hold its 98th session from 13 to 31 January. During the session, the Committee w review the reports of Slovakia, Eritrea, Honduras, St Kitts and Nevis, Peru, Gambia, and Ecuador. The CRC would also hold a meeting with Member States.
In response to questions about the impact of the recent decision announced by META to terminate fact-checking on its platforms, Mr. Zaccheo noted that the UN was constantly monitoring and evaluating the social media space and its role within it. The position of the United Nations was that it was important to be present on social media platforms in order to provide evidence-based information and to bring attention to the dangers and mis- and disinformation. On behalf of WHO, Ms. Harris stated that her agency believed it was important to present trusted information on all channels where people might be seeking out such information, including various social media platforms.
Finally, Mr. Zaccheo informed that the UN was now accepting nominations for the United Nations Nelson Rolihlahla Mandela Prize, which aimed to recognize the achievements of those who dedicated their lives to the service of humanity. The deadline was 28 February, and more information is available here.
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New data showing that rivers were at their lowest level for decades last year provides further evidence that the climate crisis is real and countries must act immediately to protect themselves from the increasing threat to communities and livelihoods, the UN World Meteorological Organization (WMO) said on Thursday.
The key findings from WMO’s State of Global Water Resources 2025 report covering the hydrological cycle and extreme events in the five-year period to last year:
Highlighting the long-term decline in the Earth’s freshwater storage and glacier melt, WMO Secretary-General Celeste Saulo explained that the planet’s water reserves used to act as a planetary “savings account” that absorbed the occasional dry season, avoiding a water crisis. “One of the central stories of the 2025 report is what is happening to that savings account? And the simple answer is that we are depleting it,” she told journalists in Geneva.
Groundwater reserves are equally stretched and have been in decline since 2014, WMO’s report states, with nearly two-thirds of monitored wells worldwide showing levels lower than the historical norm and indicating a shift “further toward deficit…not recovery”.
“At the same time, we are seeing more water-related disasters,” Ms. Saulo said, while also stressing that the currently strengthening El Niño “will increase the risk of drought in some areas, and flooding in others”.
Glaciers disappearing
In 2025, for the fourth consecutive year, every major glaciated region on Earth lost ice mass, leading to short-term hazards including floods and long-term water insecurity, according to WMO.
Responding to a question about whether the changing global water cycle might have contributed to the deadly Nepal-China flooding disaster, Ms. Saulo explained that melting ice and rock was just one factor in the chain of events that ultimately sent a massive and deadly wall of water and debris downstream on 26 August, killing at least 1,367 people.
“You asked if it could happen again? Absolutely; the problem in this region is that there’s 63,700 glaciers at the last count,” she told a Press Conference in Geneva. “Even if you’re looking with remote sensing with satellites at these glaciers, you might see some faults, you might see some slight shifting, that does not mean necessarily catastrophic collapse. So, in order to plan for this, it’s very, very difficult. But the international community is looking very hard at ways in which we can bring people together to solve some of these monitoring issues.”
Data indicates that glaciers shrank between 2023 and 2025 with cumulative losses of 1,400 gigatonnes of water – or about one third of annual fresh water needs.
Every major glacier region on Earth lost ice for the fourth consecutive year.
“All 19 glacier regions around the globe lost ice; in Central Asia, Iceland, the Russian Arctic and western Canada and the United States, it was among the three worst years on record,” said Wayne Jenkinson, WMO’s Director of Hydrology and Cryosphere.
Some regions with smaller glaciers such as Central Europe, the Caucasus, the western Canada and the United States may already have reached “peak water”, Mr. Jenkinson warned.
“After this point, the glacier gives less meltwater each year simply because there is less ice left to melt. That matters for every community downstream that relies on water during hot, dry summers,” he explained.
Narelle van der Wel, WMO’s Head of Cryosphere Monitoring, Predictions and Services, stressed that while some further glacier loss is unavoidable, the eventual scale of the decline is not predetermined.
“Some glacier loss is inevitable, but total loss of glaciers is not yet inevitable,” she said, pointing to emissions reductions as central to limiting future losses.
Preparing for moving baselines
The report does not attribute every observed change to climate change alone. WMO says pressure on water resources and natural variability also contribute.
Mr. Jenkinson said governments need to prepare for “moving baselines” as historical patterns become less reliable.
“The situation 30 years ago is not where we are today,” he said. Countries, he added, need to prepare “for those changes that have really already arrived”.
ends
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