A new study published in the journal Nature by climate researchers from Europe and the U.S. has delved deeper into the connection between heat waves and major fossil fuel companies. The study focused on heat waves occurring between 2000 and 2023, attributing the severity and likelihood of these events to “carbon majors,” including state-owned entities like Gazprom and Saudi Aramco, as well as investor-owned companies such as Shell, BP, ExxonMobil, Suncor, and Cenovus.
By analyzing the lifetime carbon emissions of these carbon majors and their impact on exacerbating heat waves, the study identified that climate change has amplified the median intensity of global heat waves by 1.68°C from 2010 to 2019, with 0.47°C of that increase attributed to just 14 of the largest carbon majors.
The research, led by climate scientist Yann Quilcaille from ETH Zürich, highlighted the significant contribution even smaller carbon majors make to the probability of heat waves. For instance, a Russian coal company, the smallest emitter among the 180 carbon majors studied, was found to have significantly heightened the likelihood of 16 heat waves.
Experts view this study as a significant development in holding fossil fuel companies accountable for their role in climate change, potentially influencing climate litigation globally. While the study does not quantify the monetary damage caused by each company, it sets a foundation for calculating liabilities in the future. This comes at a crucial time as countries and companies reassess their climate policies amid shifts in global climate action.
The study aligns with the International Court of Justice’s advisory opinion, which suggests that countries affected by climate disasters could seek reparations from major carbon emitters. Legal experts believe this research strengthens the case for suing companies by establishing a clear link between their emissions and climate-related damages.
In Canada, ongoing legal cases against government inaction on climate change are being pursued, indicating a growing trend of seeking accountability for climate impacts. With the support of scientific research like this study, individuals affected by climate change may have a stronger basis for seeking redress.
The findings underscore the significant responsibility borne by carbon majors in contributing to the climate crisis, emphasizing the need for accountability and action to mitigate further damage. Despite efforts to reach out to the companies mentioned in the study, responses were either declined or not received at the time of publication.