UN Warns Global Temperatures Will Breach Critical 1.5°C Warming Limit Within Years

The UN announced on Wednesday that global temperatures are on track to surpass the crucial warming threshold of 1.5°C above pre-industrial levels within the coming years, a target previously established under the 2015 Paris climate accord. Officials cautioned that governments must urgently intensify efforts to restrict temperature increases and eventually reverse the warming trend.

In a comprehensive assessment compiled with contributions from numerous scientists, the UN Environment Programme reported that worldwide initiatives to reduce greenhouse gas emissions have proved insufficient, thereby elevating the dangers associated with extreme weather, rising sea levels, and the destruction of ecosystems.

“This is the legacy of our own inaction,” stated Unep executive director Inger Andersen. She further emphasized that severe heatwaves already demonstrate how climate impacts are arriving more rapidly, striking with greater severity, and persisting for longer periods, which results in increased fatalities and more profound disruptions.

Surpassing the 1.5°C limit would significantly intensify extreme weather events, glacier melting, ecological degradation, and sea-level rise, placing mounting pressure on human health, food and water security, urban areas, and infrastructure, Ms Andersen noted. Addressing reporters at UN headquarters, she declared, “This is a matter of survival, not a matter of negotiation.”

According to Unep, lowering temperatures back below the critical threshold remains technically feasible, though considerable uncertainty persists regarding its realization. Even under the most favorable projections, global temperatures would peak at approximately 1.8°C before potentially declining to 1.5°C later in the century.

Achieving this reduction demands swift and substantial cuts in greenhouse gas emissions alongside massive deployment of carbon dioxide removal strategies, ranging from forest restoration to advanced technologies capable of extracting carbon directly from the atmosphere.

“Now, the question is, of course, whether those with the larger emissions are willing to lean in. We are seeing a good number of them doing so,” Ms Andersen remarked. She added that renewable energy has become significantly cheaper than hydrocarbons in most markets, though society is simply failing to move quickly enough. “If we were to bypass 1.8, then getting back down to 1.5 will be extremely difficult, with consequences that will have fundamental and calamitous impact for humanity.”

Previously, UN Secretary General Antonio Guterres noted last year that global temperatures were anticipated to rise temporarily above the 1.5°C threshold relative to pre-industrial levels.