In a recent report, the United Nations has indicated that Earth is likely to exceed the 1.5-degree Celsius threshold established in the 2015 Paris climate accord due to the continued burning of fossil fuels. The report, released by the United Nations Environment Programme, outlines a new strategy for addressing climate change, suggesting that while the world has lost the chance to prevent severe warming, efforts should now focus on limiting further temperature increases and eventually reducing them back below the threshold.
UN Secretary-General António Guterres stated, "Humanity is speeding past the limit to avoid climate catastrophe." The report highlights that the world is currently at approximately 1.4 degrees Celsius above pre-industrial levels and predicts that the 1.5-degree threshold will be crossed within the next few years.
The report suggests that if countries pursue ambitious climate goals, the most optimistic scenario would see warming peak at 1.8 degrees Celsius around mid-century. However, current policies are expected to lead to a rise of 2.6 degrees Celsius by 2100. The UN now emphasizes the need for policymakers to prepare for a future where the globe surpasses the 1.5-degree limit and then works to cool temperatures back down.
UNEP Executive Director Inger Andersen remarked, "The 1.5 target is still the goal. But now we need to approach it differently from above." The report stresses the importance of limiting the peak temperature and reducing the duration of time spent above the 1.5-degree mark.
The report also warns of significant impacts from climate change, including increased weather-related disasters, rising sea levels, and threats to biodiversity. It highlights that the overshoot period could last for many decades, during which time the effects of climate change will intensify, leading to food and water shortages, economic challenges, and increased mortality rates.
The report concludes that innovative approaches to carbon dioxide removal will be necessary to cool the planet, as traditional methods such as tree planting may only provide limited benefits. Experts have expressed skepticism about the feasibility of these approaches and the urgency of addressing climate change effectively. The report serves as a call to action for governments to enhance their efforts in adapting to the worsening impacts of climate change.