In a stark update, the World Meteorological Organization (WMO) recently revealed that levels of the top three greenhouse gases — carbon dioxide, methane, and nitrous oxide — have reached unprecedented highs, exacerbating global warming. Despite mounting evidence of severe climate impacts, including extreme weather and rising sea levels, emissions from human activities, especially fossil fuel combustion, continue to soar.
According to a separate UN climate report, efforts to cut emissions are far from sufficient. Global action is currently set to reduce emissions by only 2.6 percent from 2019 levels by 2030 — a fraction of the 43 percent reduction needed to prevent the worst outcomes of climate change. As countries prepare for COP29 in Azerbaijan, UN climate chief Simon Stiell emphasized the need for “bolder” strategies, calling the current situation “the era of inadequacy.”
Under the Paris Agreement, nations pledged to limit temperature rise to “well below” 2°C above pre-industrial levels and ideally aim for a 1.5°C cap. However, current commitments would see a dangerous 51.5 billion tonnes of greenhouse gases released by 2030, setting the stage for devastating economic and environmental impacts.
The WMO noted that carbon dioxide levels in 2023 were at 420 parts per million, methane at 1,934 parts per billion, and nitrous oxide at 336 parts per billion. This CO2 level is 51 percent higher than pre-industrial times, with atmospheric CO2 accumulating faster than at any other period in human history. Additionally, the report warned that rising global temperatures could weaken natural carbon sinks like oceans and forests, leading to even greater warming.
WMO’s Celeste Saulo stressed that record-breaking greenhouse gas levels demand urgent action, warning that failure to act now could set society on a “guaranteed path to severe and widespread impacts for all.”
