El Niño is making a comeback, and new research from Dartmouth College warns its economic impact could be far longer-lasting than previously understood. The climate phenomenon, known for disrupting weather patterns globally, may cost businesses trillions over an extended period.
According to the Dartmouth study, economic losses from major El Niño events persist for five years after the event itself. This extended timeline challenges conventional assumptions that financial recovery occurs within a single year. The research does not provide specific dollar figures for the projected losses.
For business leaders, the implications are significant. Companies that fail to prepare for multiyear disruptions—ranging from agricultural supply chain shocks to reduced consumer spending—may face compounded financial strain. The findings suggest that risk assessment models should account for longer recovery periods.
This research comes as climate patterns become increasingly volatile. While El Niño is a natural cycle, its interaction with broader climate change could amplify its effects. Businesses in sectors like agriculture, insurance, and logistics are particularly vulnerable.
Not all experts agree on the severity of the economic impact, with some economists arguing that adaptive technologies and global diversification can mitigate long-term damage. However, the Dartmouth study provides a strong empirical basis for revisiting disaster planning strategies.