Flawed Models Underestimate Climate Risk to Global Economy, Experts Warn

Economic Blind Spots

Flawed economic models are dangerously underestimating the financial threat posed by the climate crisis, according to a new warning from experts. The models used by central banks and governments worldwide fail to capture the true scale of potential damage.

This oversight could lead to a sudden and severe global economic crash, the experts cautioned. The warning comes from a group of economists and climate scientists who have been studying the gap between climate science and financial risk assessment.

Tipping Points Ignored

The core problem, the experts argue, is that standard economic models treat climate change as a gradual, linear process. They do not account for tipping points—critical thresholds beyond which changes become abrupt and irreversible.

Examples include the collapse of the Amazon rainforest or the melting of the Greenland ice sheet. Such events could trigger cascading economic shocks that the models currently ignore.

This flaw means that the potential for catastrophic, non-linear impacts is being systematically overlooked in financial planning. The result is a false sense of security among policymakers and investors.

Systemic Risk Unseen

The experts warn that the financial system itself is vulnerable. Banks and insurers rely on these models to price risk and set premiums. If the models are wrong, the entire system could be mispricing assets.

A sudden reassessment of risk could trigger a market crash, similar to the 2008 financial crisis but on a larger scale. The report stresses that climate change is not just an environmental issue but a core financial stability concern.

Regulators and central banks must urgently update their models to reflect the real-world physics of climate change. The current approach is akin to driving a car while only looking at the rearview mirror.

What Must Change

The experts call for a fundamental overhaul of how economic risk from climate change is calculated. This includes integrating climate science directly into financial models and stress-testing economies for worst-case scenarios.

They also recommend that central banks incorporate climate risk into their monetary policy frameworks. Ignoring this could leave the global economy unprepared for the shocks ahead.

The warning is not new, but it is growing louder. Previous assessments by the Network for Greening the Financial System have also pointed to gaps in risk modeling. However, implementation has been slow.

What happens next depends on whether policymakers take this warning seriously. If they do not, the experts caution, the economic fallout from climate change could be far worse than currently anticipated—and it could arrive much sooner than expected.