Tuesday, October 27, 2026

Greenhouse gas levels hit new record highs in 2025 - UN

Greenhouse gas levels hit new record highs in 2025

 Greenhouse gas concentrations in the atmosphere rose to new record highs in 2025, locking in climate impacts that will persist for centuries to come, the United Nations has said.

Levels of the three main greenhouse gases - the climate-warming carbon dioxide, methane and nitrous oxide - all rose to unprecedented figures in 2025, the UN's weather and climate agency said.

The World Meteorological Organization said the rise would lead to more long-term temperature increases for the planet.

The WMO's 22nd annual Greenhouse Gas Bulletin comes ahead of the COP31 UN climate summit in Antalya, Turkey, running from 9-20 November.

"Another year, another new record," said WMO deputy secretary-general Ko Barrett.

"Greenhouse gases are trapping an unprecedented amount of heat in the atmosphere, providing energy for more extreme weather and associated risks to our economies and societies.

"The past 11 years have been the warmest on record and this trend is set to continue. Carbon dioxide has a very long lifetime and so will affect the global climate not just for years but for decades and even centuries."

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