Climate Change Will Cost Global Economy $38 Trillion Every Year Within 25 Years, Scientists Warn - Forbes

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Climate change is on track to cost the global economy $38 trillion a year in damages within the next 25 years, researchers warned on Wednesday, a baseline that underscores the mounting economic costs of climate change and continued inaction as nations bicker over who will pick up the tab.

Key Facts

Damages from climate change will set the global economy back an estimated $38 trillion a year by 2049, with a likely range of between $19 trillion and $59 trillion, warned a trio of researchers from Potsdam and Berlin in Germany in a peer reviewed study published in the journal Nature.

To obtain the figure, researchers analyzed data on how climate change impacted the economy in more than 1,600 regions around the world over the past 40 years, using this to build a model to project future damages compared to a baseline world economy where there are no damages from human-driven climate change.

The model primarily considers the climate damages stemming from changes in temperature and rainfall, the researchers said, with first author Maximilian Kotz, a researcher at the Potsdam Institute for Climate Impact Research, noting these can impact numerous areas relevant to economic growth like “agricultural yields, labor productivity or infrastructure.”

Importantly, as the model only factored in data from previous emissions, these costs can be considered something of a floor and the researchers noted the world economy is already “committed to an income reduction of 19% within the next 26 years,” regardless of what society now does to address the climate crisis.

Global costs are likely to rise even further once other costly extremes like weather disasters, storms and wildfires that are exacerbated by climate change are considered, Kotz said.

The researchers said their findings underscore the need for swift and drastic action to mitigate climate change and avoid even higher costs in the future, stressing that a failure to adapt could lead to average global economic losses as high as 60% by 2100.

How Do The Costs Of Inaction Compare To Taking Action?

Cost is a major sticking point when it comes to concrete action on climate change and money has become a key lever in making climate a “culture war” issue. The costs and logistics involved in transitioning towards a greener, more sustainable economy and moving to net zero are immense and there are significant vested interests such as the fossil fuel industry, which is keen to retain as much of the profitable status quo for as long as possible. The researchers acknowledged the sizable costs of adapting to climate change but said inaction comes with a cost as well. The damages estimated already dwarf the costs associated with the money needed to keep climate change in line with the limits set out in the 2015 Paris Climate Agreement, the researchers said, referencing the globally agreed upon goalpost set to minimize damage and slash emissions. The $38 trillion estimate for damages is already six times the $6 trillion thought needed to meet that threshold, the researchers said.

Crucial Quote

“We find damages almost everywhere, but countries in the tropics will suffer the most because they are already warmer,” said study author Anders Levermann. The researcher, also of the Potsdam Institute, explained there is a “considerable inequity of climate impacts” around the world and that “further temperature increases will therefore be most harmful” in tropical countries. “The countries least responsible for climate change” are expected to suffer greater losses, Levermann added, and they are “also the ones with the least resources to adapt to its impacts.”

What To Watch For

The fundamental inequality over who is impacted most by climate change and who has benefited most from the polluting practices responsible for the climate crisis—who also have more resources to mitigate future damages—has become one of the most difficult political sticking points when it comes to negotiating global action to reduce emissions. Less affluent countries bearing the brunt of climate change argue wealthy nations like the U.S. and Western Europe have already reaped the benefits from fossil fuels and should pay more to cover the losses and damages poorer countries face, as well as to help them with the costs of adapting to greener sources of energy. Other countries, notably big polluters India and China, stymie negotiations by arguing they should have longer to wean themselves off of fossil fuels as their emissions actually pale in comparison to those of more developed countries when considered in historical context and on a per capita basis. Climate financing is expected to be key to upcoming negotiations at the United Nations’s next climate summit in November. The COP29 summit will be held in Baku, the capital city of oil-rich Azerbaijan.

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Climate Change Will Cost Global Economy $38 Trillion Every Year Within 25 Years, Scientists Warn - Forbes
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