The world’s biggest companies have caused $28 trillion in climate damage, a new study estimates

Washington (AP) – The world’s largest companies in the world caused $ 28 trillion in climate The damage, a new study is estimated as part of the effort to facilitate people and governments. Tobacco giants She was.

The Dartmath College Research Team reached the estimated pollution caused by 111 companies, with more than half the total number of the dollar comes from 10 Fuel fuel providers: Saudi Aramco, Gazprom, Chevron, Exxonmobil, BP, Shell, National Oil Co. Pemex, Coal India and the British Coal Corporation.

For comparison, 28 trillion dollars is less than the total of all goods and services produced in the United States last year.

At the top of the list, ARAMCO and Gazprom caused both trillion dollars in the decades of heat damage, and the team was calculated in a study published on Wednesday Nature Magazine. The researchers believed that every 1 % of the greenhouse gases that have been put in the air since 1990 caused damage to $ 502 billion of heat alone, which do not include the costs incurred by the other harsh weather such as hurricanes, droughts and floods.

People talk about pushing the pollutants, and sometimes even Take them to court or Pass the laws It means curbing it.

Its head, Christopher Callen, who worked in Dartmouth, is now a land scientist at Stanford University, that the study is an attempt to determine “causal ties that lie behind many of these accountability theories.” Zero Carbon Analytics 68 lawsuits filed Global over climate change, with more than half of them in the United States.

“Everyone asks the same question: What can we already claim about who caused this?” Climate scientist Dartmouth Justin Mansin, a co -author of the study, said. “This is really due to a dynamic thermal issue. Can we follow the risk of climate and/or its damages to the designated bases?”

The answer is yes, Calman and Mankin said.

Researchers began with well-known emissions of products-such as gasoline or electricity from coal-powered power plants-which are produced by 111 largest carbon-oriented companies of up to 137 years, because this is due to any of the corporate emissions data and the survival of carbon dioxide in the air for a much longer period. They used 1000 different computer simulations to translate those emissions into changes in the average global surface temperature of the Earth by comparing them to a world without the company’s emissions.

Using this approach, they decided that pollution from Chevron, for example, raised the Earth’s temperature by 0.045 ° F (025 ° C).

The researchers also calculated the extent of pollution of each company in the five most hot days of the year using 80 other computer simulations and then applying a formula linking the intense heat to changes in economic production.

This system is designed on The well -known techniques that scientists use For more than a decade to attribute the harsh weather events, such as 2021 Pacific Northwest Heat Wave, Climate change.

Mansin said that in the past, there was an argument about, “Who says that it is my carbon dioxide molecule that contributed to these damages in exchange for any other?” He said that his study “really made it clear how the reasonable denial veil no longer exists. We can actually follow the damage to the main gates.”

Shell refused to comment. Aramco, Gazprom, Chevron, Exxon Mobil and BP did not respond to suspension requests.

“All the ways they use are very strong,” said Friedrich Otto, an imperial climate scientist in London. She did not participate in the study.

“It will be good in my opinion if this approach will be taken more by different groups. As is the case with the chain of transmission, the more groups, the better, the better, the more we know what is happening with a difference and what does not do it.” So far, no climate responsibility for a large carbon emitter has succeeded, but it may show “the strength of scientific evidence greatly.”

Callen said that the damage caused by individual companies has been lost in the noise of data, so it cannot be calculated.

“We have now reached a point in the climate crisis where the total damage is so huge that the contributions of one company producer can reach tens of billions of dollars annually,” said Chris Field, a climate scientist at Stanford University who has not participated in the research.

This is a good exercise and evidence of the concept, but there are many other climate variables that the numbers reached by Calhaan and Mankin are likely to be less than the damage that companies truly caused.

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