A growing body of climate attribution studies is shedding light on the significant impact of carbon emissions on extreme weather events such as heat waves, floods, and droughts. A recent study published in the journal Nature by climate researchers from Europe and the U.S. has delved deeper into this connection by directly linking heat waves, the deadliest type of disaster, to major fossil fuel companies and their products.
The study focused on major heat waves occurring between 2000 and 2023 and their association with “carbon majors” – which include state-owned companies like Gazprom and Saudi Aramco, investor-owned private companies such as Shell, BP, ExxonMobil, and Canadian firms like Suncor and Cenovus, as well as nation-states producing fossil fuels like coal in India and the former Soviet Union.
By analyzing the lifetime carbon emissions of these carbon majors and existing research on the exacerbating effects of carbon emissions on heat waves, the study estimated how emissions from specific companies influenced the severity and likelihood of particular heat waves. The research revealed that between 2010 and 2019, climate change amplified the median intensity of global heat waves by approximately 1.68 degrees Celsius, with 0.47 degrees attributed to just 14 of the largest carbon majors.
This groundbreaking study not only highlights the significant role of carbon majors in exacerbating heat waves but also opens new avenues for assigning moral and legal responsibility to these companies for climate change impacts. While the study does not quantify the monetary damage caused by each company due to factors like emergency preparedness and air conditioner usage, it sets a precedent for potential climate litigation and advocates globally.
Experts suggest that such attribution research, combined with legal opinions like the International Court of Justice’s recent advisory ruling, could empower affected parties to seek reparations from high-emitting countries and companies. In Canada, ongoing legal cases against government inaction on climate change are progressing, signaling a growing trend of using legal avenues to address climate impacts.
Overall, this study underscores the crucial role of carbon majors in driving climate change impacts and provides a foundation for potential legal actions seeking accountability for their contributions to environmental crises.
