Highlights

• Global economic losses from climate change revised to $32 trillion annually by 2049.
• Climate-related income decline is now projected at 17% by 2050.
• Potsdam Institute study retraction confirms errors, but climate damages are enormous.

A 2024 climate study on the catastrophic economic costs of climate change has been retracted after researchers identified errors in historical data.

Originally published in Nature, the study gained attention and was cited by financial institutions and media outlets, including Forbes and Reuters.

Despite the withdrawal, the revised figures are alarming, with global economic losses and climate damages projected to rise sharply by mid-century.

The retraction has fuelled debate about the accuracy of climate projections and their implications for policy and investment.

Read More: Land and Ocean Sinks Weaken, Absorbed No CO2 in 2023

What the climate study initially predicted

The original research estimated that global income could decline by 19% by 2050 owing to climate-related economic damages, with an annual cost of $38 trillion by 2049.

It also suggested a 99% probability that repairing climate damage would cost more than building resilience measures.

However, after correcting errors in economic data from Uzbekistan and addressing overlooked statistical factors, these numbers were revised. The updated calculations now indicate a 17% decline in global income, $32 trillion in annual climate costs, and a 91% probability that adaptation expenses would exceed mitigation costs.

These adjustments show uneven damage distribution, with poorer regions facing more losses in proportion to income, thereby lowering the global dollar value of losses.

Also Read: Famous 1.5°C Climate Cap Set to Collapse in 5 Years, Says WMO

Impact on mitigation and resilience calculations

The revised figures indicate that annual climate damages will remain several times higher than the cost of limiting warming to 2℃, though slightly less than previously estimated. This suggests that though global losses are enormous, the scale of economic damage in dollar terms is influenced by regional disparities.

Causes of errors and scientific response

The flawed projections stemmed from historical economic data inaccuracies and underestimated statistical variability. Researchers updated the data and implemented stricter controls for anomalies, as well as accounted for correlations between regions.

While the Potsdam Institute for Climate Impact Research (PIK) retracted the paper, it says that the core findings remain, and the economic consequences of climate change are humongous. Independent experts confirm that the overall pattern of loss remains consistent, even if exact numbers shift slightly.

Public reaction and misinformation

The retraction triggered criticism on social media, with some suggesting that climate science is manipulated or politically driven.

See Also: Guterres Warns of ‘Devastating Consequences’ as 1.5°C Climate Goal Slips Away

Yet mainstream outlets, including AP News, the New York Times, and Sky News, reported the update accurately. Despite this, some users misrepresented the study’s withdrawal as proof that climate change is a “farce,” ignoring evidence that damages are already being felt, such as rising home insurance costs in the US.

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Source: euro news