As planet heads toward 2.7°C rise, tracker warns global climate action has 'flatlined'

Existing policies and actions taken by world governments put the world on track for a median estimate of 2.7°C of warming by the end of the century, Climate Action Tracker revealed on Thursday at the United Nations Climate Change Conference in Baku, Azerbaijan.

If global leaders make no further effort to reduce emissions, temperatures have a 33% chance of spiking past 3°C of warming by 2100 and a 10% chance of overtaking 3.6°C, which report lead author Sofia Gonzales-Zuniga called "an absolutely catastrophic level of warming."

"The combined global effect of government action on climate change has flatlined over the last three years, underscoring a critical disconnect between the reality of climate change and the lack of urgency on policies to cut emissions," Climate Action Tracker (CAT) announced during its annual update at COP29.

The report attributes the lack of progress to the fact that few governments announced new climate targets in 2024 while they continued to facilitate the increased burning of fossil fuels, despite the pledge made at last year's COP28 to transition away from oil, gas, and coal.

It comes on the heels of a series of reports released ahead of or during COP29 that paint a consistent picture of escalating greenhouse gas emissions and climate extremes paired with government inaction. The U.N. Emissions Gap Report, published in late October, projected that the world was on track for 3.1°C of warming based on current policies. The World Meteorological Organization's (WMO) Greenhouse Gas Bulletin, also published last month, found that all three main greenhouse gases reached record atmospheric levels in 2023.

"The impacts of climate change are becoming increasingly dramatic, yet we still see no sign that burning of fossil fuels has peaked."

2023 was also the hottest year on record, but the WMO's State of the Climate 2024 update for COP29 warned that 2024 was likely to surpass it. Further, global temperatures from January to September averaged 1.54°C above preindustrial levels, temporarily surpassing the 1.5°C warming limit enshrined in the Paris agreement.

"The record-breaking rainfall and flooding, rapidly intensifying tropical cyclones, deadly heat, relentless drought, and raging wildfires that we have seen in different parts of the world this year are unfortunately our new reality and a foretaste of our future," WMO Secretary-General Celeste Saulo said in a statement. "We urgently need to reduce greenhouse gas emissions and strengthen our monitoring and understanding of our changing climate."

Yet this is precisely what is not happening: Another study from the Global Carbon Budget released on Wednesday projected that carbon dioxide emissions from the burning of fossil fuels would increase by 0.8% from 2023 to reach 37.4 billion metric tons of CO2 equivalent, a record high.

"The impacts of climate change are becoming increasingly dramatic, yet we still see no sign that burning of fossil fuels has peaked," study leader Pierre Friedlingstein, a professor at Exeter's Global Systems Institute, said in a statement. "Time is running out to meet the Paris agreement goals—and world leaders meeting at COP29 must bring about rapid and deep cuts to fossil fuel emissions to give us a chance of staying well below 2°C warming above preindustrial levels."

The Climate Action Tracker report adds to these findings, concluding that while renewables have surged in recent years, continued reliance on fossil fuels have undermined that progress. While clean energy like wind and solar and clean transit like electric vehicles now receive double the investments of oil, gas, and coal, funding for the latter still ballooned by a factor of four between 2021 and 2022 while fossil fuel subsidies are at a record high.

"We are clearly failing to bend the curve," Gonzales-Zuniga said. "As the world edges closer to these dangerous climate thresholds, the need for immediate, stronger action to reverse this trend becomes ever more urgent."

CAT called on the world's largest emitters to lead the way. It recommended 1.5°C-aligned 2035 targets for the world's seven biggest climate polluters—China, the U.S., India, the E.U., Indonesia, Japan, and Australia—as well as the "troika" countries of Brazil, UAE, and Azerbaijan. To bring its policies in line with the 1.5°C goal, the U.S. would have to cut its total emissions (including from land-use and forests) by 65% of 2005 levels by 2030 and 80% by 2035.

This is unlikely to happen under the administration of President-elect Donald Trump, who has promised to "drill, baby, drill" as soon as he retakes the White House in January. CAT concluded that Trump's promised energy policies would raise its projection for 2100 temperatures based on current actions by 0.04°C. However, if the U.S. permanently axes its net-zero goals, and if other countries decide to follow Trump's lead, that temperature increase could be higher.

"Clearly, we won't know the full impact of the U.S. elections until President-elect Trump takes office, but there is a clean energy momentum in the U.S. now that will be difficult to stop," Bill Hare, the CEO of Climate Analytics, said in a statement. "While the Trump administration will undoubtedly do its best to throw a wrecking ball into climate action, the clean energy momentum created by President [Joe] Biden, being actioned across the country, is likely to continue at significant scale."

"The key issue is whether countries stick together and continue to move forward with action," Hare concluded. "A Trump rollback of U.S. policies, as damaging as it is, can be overcome."