A Global Promise Unfulfilled: The Paris Agreement's Struggle to Curb Warming
A Decade of Climate Progress and Setbacks
The world has undergone significant changes over the past decade since leaders celebrated a historic climate agreement in Paris. However, these changes have not unfolded as expected or desired. Earth's warming climate has become more severe and unpredictable, with the pace of global warming outpacing efforts to reduce carbon emissions.
Several scientists and officials have highlighted that the reliance on fossil fuels—coal, oil, and natural gas—remains a major contributor to carbon pollution, which drives global warming. Despite some progress, such as a reduction of over 1 degree Celsius in future warming projections since 2015, the overall trajectory remains concerning. This lack of sufficient progress will be a central topic during the upcoming United Nations climate negotiations in Belem, Brazil.
Johan Rockstrom, director of the Potsdam Institute for Climate Research in Germany, emphasized the need for honesty about the current situation. He stated that the impacts of warming are occurring faster and more severely than predicted. Despite this, diplomats remain committed to their goals.
Christiana Figueres, former UN climate chief, noted that while the direction set by the Paris Agreement is being followed, the speed of action is slower than necessary. She pointed out that the gap between current progress and the required actions is still present and widening.
Inger Andersen, Executive Director of the UN Environment Programme, expressed concern that the world is "obviously falling behind." She warned that humanity is essentially "sawing the branch on which we are sitting."
Signs of Accelerating Climate Harms
The planet's annual temperature has risen significantly since 2015, with a jump of approximately 0.46°C. According to data from the European climate service Copernicus, this is one of the largest 10-year temperature increases on record. This year is expected to be either the second or third hottest on record, with each year since 2015 being hotter than the previous one.
Deadly heat waves have affected regions beyond traditional hotspots like India and the Middle East, impacting temperate areas such as the Pacific Northwest in North America and Siberia in Russia. The decade has also seen an increase in extreme weather events, including the most Category 5 Atlantic hurricanes and the highest number of billion-dollar weather disasters in the United States.
Wildfires have devastated parts of Hawaii, California, Europe, and Australia, while floods have wreaked havoc in Pakistan, China, and the American South. Many of these events have been linked to human-caused climate change.
Since 2015, over 7 trillion tonnes of ice have disappeared from glaciers and ice sheets in Greenland and Antarctica. This loss is equivalent to more than 19 million Empire State Buildings. Sea levels have also risen at an accelerating rate, with a 40-millimetre increase over the past decade. This amount of water could fill 30 lakes the size of Lake Erie.
Even the Amazon, where the climate negotiations will take place, has shifted from a region that absorbs heat-trapping gases to one that sometimes emits them due to deforestation.
Progress in Combating Climate Change
Despite these challenges, there have been notable successes in the past decade. Renewable energy has become more affordable than fossil fuels in most regions. According to two July UN reports, 74% of the growth in global electricity generation came from wind, solar, and other green sources last year.
The number of electric vehicles sold globally has increased dramatically, from half a million in 2015 to 17 million last year. Todd Stern, former US Special Climate Envoy, stated that the shift towards renewable energy is unstoppable.
UN projections from 2015 suggested a potential warming of almost 4°C since the mid-1800s. Now, the world is on track for a 2.8°C increase, although this is still far from the 1.5°C goal set by the Paris Agreement. Johan Rockstrom emphasized that the world has failed to meet this target.
A report examining various indicators of progress found that none were on track to keep warming below 1.5°C. However, some indicators are moving in the right direction, albeit slowly.
Rising Emissions and Inequality
Methane and carbon dioxide levels in the atmosphere have continued to rise, with methane increasing by 5.2% and carbon dioxide by 5.8% from 2015 to 2024. While developed countries have reduced their emissions, other nations like China and India have seen significant increases.
Oxfam International highlighted the disparity in emissions, noting that the richest 0.1% of people increased their carbon emissions by 3%, while the poorest 10% reduced theirs by 30%.
Joanna Depledge, a climate negotiations historian, stated that the Paris Agreement has underperformed. She described it as a "half-full, half-empty" situation, where it cannot be considered a failure but also not a dramatic success.
