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Home Science News Climate

Crucial gaps in climate risk assessment methods

July 2, 2024
in Climate
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Crucial gaps in climate risk assessment methods
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A study by Stefano Battiston of the Department of Finance at the University of Zurich and his co-authors has identified critical shortcomings in the way climate-related risks to corporate assets are currently assessed. Many current estimates of climate physical climate risk rely on simplified and proxy data that do not accurately represent a company’s true risk exposure. This can lead to significant underestimates of climate-related losses, with serious implications for business investment planning, asset valuation and climate adaptation efforts.

A study by Stefano Battiston of the Department of Finance at the University of Zurich and his co-authors has identified critical shortcomings in the way climate-related risks to corporate assets are currently assessed. Many current estimates of climate physical climate risk rely on simplified and proxy data that do not accurately represent a company’s true risk exposure. This can lead to significant underestimates of climate-related losses, with serious implications for business investment planning, asset valuation and climate adaptation efforts.

Potential losses up to 70% higher than previously estimated
The research team developed a new methodology that uses detailed information about the location and characteristics of a company’s physical assets, such as factories, equipment and natural resources. This approach provides a more accurate picture of climate risks than methods that use proxy data, which often assume that all of a company’s assets are located at its headquarters.
“When we compared our results with those using proxy data, we found that the potential losses from climate risks could be up to 70% higher than previously thought,” says Stefano Battiston. “This underscores the critical need for more granular data in risk assessments.”

Preparing for the worst: The role of extreme events
The authors also point to the importance of considering “tail risk” in climate assessments. Tail risk refers to the possibility of extreme events that, while rare, can have catastrophic impacts. “Many assessments focus on average impacts. Our research shows that the potential losses from extreme events can be up to 98% higher than these averages suggest,” says Stefano Battiston. “Failure to account for these possibilities can leave businesses and investors dangerously unprepared.”

More funding for climate adaptation
The study’s findings have significant implications for climate policy, business strategy, and investment decisions. The researchers emphasize that more accurate risk assessments are crucial for developing effective climate adaptation strategies and determining appropriate levels of climate-related insurance and funding. “Our work shows that we may be seriously underestimating the financial resources needed for climate adaptation,” concludes Stefano Battiston.

Literature
Giacomo Bressan, Anja Duranovic, Irene Monasterolo, Stefano Battiston: Asset-level assessment of climate physical risk matters for adaptation, Nature Communications, 1 July 2024. DOI: 10.1038/s41467-024-48820-1

 

Contact:

Prof. Dr. Stefano Battiston
Department of Finance
University of Zurich
+41 44 634 40 58
stefano.battiston@df.uzh.ch



Journal

Nature Communications

DOI

10.1038/s41467-024-48820-1

Method of Research

Meta-analysis

Subject of Research

Not applicable

Article Title

Asset-level assessment of climate physical risk matters for adaptation

Article Publication Date

1-Jul-2024

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