Scientists are raising urgent concerns as global temperatures briefly surpassed the critical 2-degree Celsius warming limit for the first time, marking a significant milestone with potential catastrophic consequences for the planet and its ecosystems.
Preliminary data shared by Samantha Burgess, deputy director of the Copernicus Climate Change Service, revealed that on November 17, the global average temperature exceeded 2 degrees Celsius above pre-industrial levels.
While this breach was temporary, it serves as a stark indicator of the Earth’s consistent warming trend, pushing towards a future where the impacts of the climate crisis may become challenging, if not impossible, to reverse.
Burgess emphasized that this event does not signify a permanent state of warming above 2 degrees but underscores the planet’s trajectory towards such alarming conditions.
Burgess reported that on that day, global temperatures averaged 1.17 degrees above 1991-2020 levels, making it the warmest November 17 on record.
However, in comparison to pre-industrial times, before widespread human activities significantly altered the climate, the temperature was 2.06 degrees warmer.
This breach occurred just ahead of the UN COP28 climate conference in Dubai, where countries will assess their progress towards the Paris Climate Agreement’s goal to limit global warming to 2 degrees above pre-industrial levels, with an aspirational target of 1.5 degrees.
While Burgess clarified that one day above 2 degrees does not breach the Paris Agreement, she highlighted the increasing likelihood of such occurrences in the coming months and years.
Copernicus’ data is preliminary and will require confirmation through real-life observations over the next few weeks.
The world is already on a trajectory to surpass 1.5 degrees of warming in the near future, a threshold at which both humans and ecosystems will face substantial challenges in adaptation.
A recent UN report indicated that even if current emissions reduction pledges are fulfilled, the world could experience between 2.5 and 2.9 degrees of warming this century.
Experts stress that every fraction of a degree above 1.5 degrees worsens the impacts, with 2 degrees of warming posing increased risks of deadly extreme weather events and the potential for irreversible tipping points, such as polar ice sheet collapse and mass coral reef die-offs.
Richard Allan, a climate science professor at the University of Reading, likened this breach to a “canary in the coalmine,” emphasizing the urgency of addressing greenhouse gas emissions. He noted that surpassing 2 degrees on specific days was expected, but the data underscores the pressing need to tackle the root causes.
This alarming development follows the hottest 12 months on record and a year marked by extreme weather events globally, including fires in Hawaii, floods in northern Africa, and storms in the Mediterranean.
Scientists are increasingly alarmed as temperature data exceeds predictions, underscoring the urgency of global efforts to mitigate and adapt to the escalating impacts of climate change.
Recent reports have highlighted the inadequacy of current climate plans, with a UN report revealing that planet-heating pollution in 2030 is projected to be 9% higher than 2010 levels, far from the 45% reduction recommended by the Intergovernmental Panel on Climate Change to limit warming to 1.5 degrees.
Another UN report indicates that countries plan to produce more than twice the limit of fossil fuels necessary to cap warming at 1.5 degrees by 2030.
