A new study from the Potsdam Institute for Climate Impact Research (PIK) reveals that erratic weather events, exacerbated by global warming, are increasingly disrupting global production and consumption, with unequal impacts across income groups.
The results, published in Nature Sustainability, highlight how temperature and precipitation variability, as well as extreme weather events, are reshaping economic risks globally. These disruptions not only affect local production but also ripple through global supply chains, with significant consequences for both high-income and low-income consumers.
The study simulated global economic interactions between profit-maximizing firms and utility-optimizing consumers to assess the risks to consumption caused by weather-induced production disruptions along supply chains. According to the findings, middle-income countries, such as Brazil and China, are particularly vulnerable due to their reliance on trade and seasonal climate exposure. While the poorest populations bear the greatest absolute risk, high-income consumers are experiencing the fastest-growing risk increase.
The study highlights the nonlinear economic response to these disruptions, making it difficult to quantify trade impacts precisely. The researchers emphasize that the risks are highest in countries with a combination of adverse trade dependence and severe climate exposure. Moreover, as global warming continues, these risks are projected to worsen, creating a cascade of effects along global supply chains that will impact goods and services worldwide.
“In the next 20 years, climate change will increase economic risks from erratic weather,” said PIK scientist Anders Levermann. “The highest risks remain with the poorest around the world. But the increase of economic risk is strongest for the wealthy, in countries like the US and the EU. Consumers all around the world, regardless of their income, will thus face increasing challenges due to global warming – without a transition towards carbon neutrality we will eventually not be able to meet these challenges.”
The findings underscore the need for both local and global efforts to build resilience in the face of growing economic risks from climate change. As weather events become more unpredictable and severe, targeted mitigation strategies are necessary to reduce the disparities in risk faced by different income groups.
Journal Reference:
Lennart Quante, Sven N. Willner, Christian Otto, Anders Levermann, ‘Global economic impact of weather variability on the rich and the poor’, Nature Sustainability (2024). DOI: 10.1038/s41893-024-01430-7
Article Source:
Press Release/Material by Potsdam Institute for Climate Impact Research (PIK)
Featured image credit: Derek Thomson | Unsplash
