The world is facing a dire warning from experts: flawed economic models could lead to a devastating global financial collapse, triggered by the accelerating climate crisis. This is a wake-up call that demands our immediate attention.
As we hurtle towards a 2-degree Celsius rise in global temperatures, the risks of extreme weather events and critical climate tipping points are escalating rapidly. Yet, the economic models relied upon by governments and financial institutions fail to account for these shocks, assuming a steady growth trajectory despite the burning of fossil fuels pushing us into uncharted climate territory.
The consequences of these tipping points, such as the collapse of Atlantic currents or the Greenland ice sheet, would be catastrophic for global society. Some of these tipping points are alarmingly close to being triggered, but predicting their exact timing is challenging. Combined extreme weather events could wipe out entire national economies, according to researchers from the University of Exeter and the Carbon Tracker Initiative.
The report emphasizes the need for governments, regulators, and financial managers to prioritize these high-impact, lower-probability risks. Avoiding irreversible outcomes by cutting carbon emissions is far more cost-effective than attempting to manage the consequences.
Dr. Jesse Abrams from the University of Exeter highlights the severity of the situation: "We're not talking about manageable economic adjustments here. The climate scientists we surveyed were clear: current economic models cannot capture the cascading failures and compounding shocks that define climate risk in a warmer world, and they could undermine the very foundations of economic growth."
Mark Campanale, CEO of Carbon Tracker, adds: "Flawed economic advice has led to widespread complacency among investors and policymakers. Certain government departments tend to downplay the economic impacts of climate change to avoid making tough choices today. This is a huge problem, as the consequences of delay are catastrophic."
Hetal Patel from Phoenix Group, managing £300 billion in long-term investments, warns: "Underestimating physical risk distorts investment decisions and minimizes the real-world consequences that will affect society as a whole."
Actuaries predict a potential 50% loss in global GDP between 2070 and 2090 due to catastrophic climate shocks, a far higher estimate than previously thought.
The new report, drawing on expert judgments from climate scientists worldwide, reveals a critical gap in economic modeling. Traditionally, these models link climate damages to changes in average temperatures, but societies and markets are most affected by extremes like heatwaves, floods, and droughts.
Furthermore, GDP fails to capture the full cost of climate damage, neglecting factors like deaths, ill health, social disruption, and ecosystem degradation. GDP can even increase post-disaster due to recovery spending.
The researchers advocate for a shift in focus towards extremes and the vulnerability of the entire financial system, rather than relying solely on central estimates. Investors should accelerate the transition away from fossil fuels as a fiduciary duty to mitigate future losses, Campanale suggests.
Current economic models may provide precise-looking loss estimates, but climate scientists warn that these are overly optimistic. "Some models predict a 10% GDP loss between 3 and 4 degrees Celsius of global heating, but physical climate scientists say the economy and society will collapse as we know it. That's a massive discrepancy," Abrams notes.
Laurie Laybourn from the Strategic Climate Risks Initiative emphasizes the urgency: "We're experiencing a paradigm shift in the speed, scale, and severity of risks driven by the climate-nature crisis. Many regulations and government actions are dangerously disconnected from reality."
This is a critical juncture where our actions, or lack thereof, will shape the future of our planet and its economies. The time to act is now.
